make style

Adding Mesh::ExtractSurfaceMesh
revert pmesh.hpp to master
2021-06-28 19:15:44 -07:00 · 2021-06-28 19:11:01 -07:00 · 2021-06-28 14:44:30 -07:00 · 2021-06-28 14:42:24 -07:00 · 2021-06-28 14:35:14 -07:00 · 2021-06-26 14:31:50 -07:00
252 changed files with 4186 additions and 22349 deletions
@@ -47,36 +47,26 @@ jobs:
    strategy:
      matrix:
        os: [ubuntu-18.04, macos-10.15]
-        target: [dbg, opt]
-        mpi: [seq, par]
+        target: [debug, optim]
+        mpi: [sequential, parallel]
        build-system: [make]
-        hypre-target: [int32]
-        # 'include' allows us to:
-        # - Add a variable to all jobs without creating a new matrix dimension.
-        #   Codecov is defined that way.
-        # - Add a new combination.
-        #   'build-system: cmake' and 'hypre-target: int64'
+        # 'include' allows us to
+        # - add a variable without creating a new matrix dimension.
+        # - add a new combination ('build-system: cmake' case here)
        #
        # note: we will gather coverage info for any non-debug run except the
        # CMake build.
        include:
-          - target: dbg
+          - target: debug
            codecov: NO
-          - target: opt
+          - target: optim
            codecov: YES
          - os: ubuntu-18.04
-            target: opt
+            target: optim
            codecov: NO
-            mpi: par
+            mpi: parallel
            build-system: cmake
-            hypre-target: int32
-          - os: ubuntu-18.04
-            target: opt
-            codecov: NO
-            mpi: par
-            build-system: make
-            hypre-target: int64
-    name: ${{ matrix.os }}-${{ matrix.build-system }}-${{ matrix.target }}-${{ matrix.mpi }}-${{ matrix.hypre-target }}
+    name: ${{ matrix.os }}-${{ matrix.target }}-${{ matrix.mpi }}-${{ matrix.build-system }}

    runs-on: ${{ matrix.os }}

@@ -102,7 +92,7 @@ jobs:
    # TODO: It would be nice to have only one step, e.g. with a dedicated
    # action, but I (@adrienbernede) don't see how at the moment.
    - name: get MPI (Linux)
-      if: matrix.mpi == 'par' && matrix.os == 'ubuntu-18.04'
+      if: matrix.mpi == 'parallel' && matrix.os == 'ubuntu-18.04'
      run: |
        sudo apt-get install mpich libmpich-dev
        export MAKE_CXX_FLAG="MPICXX=mpic++"
@@ -113,11 +103,11 @@ jobs:
        sudo apt-get install lcov

    - name: Set up Homebrew
-      if: ( matrix.mpi == 'par' || matrix.codecov == 'YES' ) && matrix.os == 'macos-10.15'
+      if: ( matrix.mpi == 'parallel' || matrix.codecov == 'YES' ) && matrix.os == 'macos-10.15'
      uses: Homebrew/actions/setup-homebrew@c4aafe8c4620bf08883dd4679c374f11e73329d3

    - name: get MPI (MacOS)
-      if: matrix.mpi == 'par' && matrix.os == 'macos-10.15'
+      if: matrix.mpi == 'parallel' && matrix.os == 'macos-10.15'
      run: |
        export HOMEBREW_NO_INSTALL_CLEANUP=1
        brew install openmpi
@@ -133,40 +123,39 @@ jobs:
    # Install will only run on cache miss.
    - name: cache hypre
      id: hypre-cache
-      if: matrix.mpi == 'par'
+      if: matrix.mpi == 'parallel'
      uses: actions/cache@v2
      with:
        path: ${{ env.HYPRE_TOP_DIR }}
-        key: ${{ runner.os }}-build-${{ env.HYPRE_TOP_DIR }}-${{ matrix.hypre-target }}-v2.0
+        key: ${{ runner.os }}-build-${{ env.HYPRE_TOP_DIR }}-v2

    - name: get hypre
-      if: matrix.mpi == 'par' && steps.hypre-cache.outputs.cache-hit != 'true'
-      uses: mfem/github-actions/build-hypre@v2.0
+      if: matrix.mpi == 'parallel' && steps.hypre-cache.outputs.cache-hit != 'true'
+      uses: mfem/github-actions/build-hypre@v1.0
      with:
-        archive: ${{ env.HYPRE_ARCHIVE }}
-        dir: ${{ env.HYPRE_TOP_DIR }}
-        target: ${{ matrix.hypre-target }}
+        hypre-archive: ${{ env.HYPRE_ARCHIVE }}
+        hypre-dir: ${{ env.HYPRE_TOP_DIR }}

    # Get Metis through cache, or build it.
    # Install will only run on cache miss.
    - name: cache metis
      id: metis-cache
-      if: matrix.mpi == 'par'
+      if: matrix.mpi == 'parallel'
      uses: actions/cache@v2
      with:
        path: ${{ env.METIS_TOP_DIR }}
-        key: ${{ runner.os }}-build-${{ env.METIS_TOP_DIR }}-v2.0
+        key: ${{ runner.os }}-build-${{ env.METIS_TOP_DIR }}-v2

    - name: install metis
-      if: matrix.mpi == 'par' && steps.metis-cache.outputs.cache-hit != 'true'
-      uses: mfem/github-actions/build-metis@v2.0
+      if: matrix.mpi == 'parallel' && steps.metis-cache.outputs.cache-hit != 'true'
+      uses: mfem/github-actions/build-metis@v1.0
      with:
-        archive: ${{ env.METIS_ARCHIVE }}
-        dir: ${{ env.METIS_TOP_DIR }}
+        metis-archive: ${{ env.METIS_ARCHIVE }}
+        metis-dir: ${{ env.METIS_TOP_DIR }}

    # MFEM build and test
    - name: build
-      uses: mfem/github-actions/build-mfem@v2.0
+      uses: mfem/github-actions/build-mfem@v1.0
      with:
        os: ${{ matrix.os }}
        target: ${{ matrix.target }}
@@ -179,17 +168,17 @@ jobs:

    # Run checks (and only checks) on debug targets
    - name: checks
-      if: matrix.build-system == 'make' && matrix.target == 'dbg'
+      if: matrix.build-system == 'make' && matrix.target == 'debug'
      run: |
        cd ${{ env.MFEM_TOP_DIR }}  && make check

    - name: unit tests
-      if: matrix.build-system == 'make' && matrix.target == 'opt'
+      if: matrix.build-system == 'make' && matrix.target == 'optim'
      run: |
        cd ${{ env.MFEM_TOP_DIR }} && make unittest

    - name: tests
-      if: matrix.build-system == 'make' && matrix.target == 'opt'
+      if: matrix.build-system == 'make' && matrix.target == 'optim'
      run: |
        cd ${{ env.MFEM_TOP_DIR }} && make test

@@ -201,8 +190,8 @@ jobs:
    # Code coverage (process and upload reports)
    - name: codecov
      if: matrix.codecov == 'YES'
-      uses: mfem/github-actions/upload-coverage@v2.0
+      uses: mfem/github-actions/upload-coverage@v1.0
      with:
-        name: ${{ matrix.os }}-${{ matrix.build-system }}-${{ matrix.target }}-${{ matrix.mpi }}-${{ matrix.hypre-target }}
+        name: ${{ matrix.os }}-${{ matrix.mpi }}
        project_dir: ${{ env.MFEM_TOP_DIR }}
        directories: "fem general linalg mesh"
@@ -53,33 +53,32 @@ jobs:
      uses: actions/cache@v2
      with:
        path: ${{ env.HYPRE_TOP_DIR }}
-        key: ${{ runner.os }}-build-${{ env.HYPRE_TOP_DIR }}-v2.0
+        key: ${{ runner.os }}-build-${{ env.HYPRE_TOP_DIR }}-v2

    - name: Get Hypre
      if: steps.hypre-cache.outputs.cache-hit != 'true'
-      uses: mfem/github-actions/build-hypre@v2.0
+      uses: mfem/github-actions/build-hypre@master
      with:
-        archive: ${{ env.HYPRE_ARCHIVE }}
-        dir: ${{ env.HYPRE_TOP_DIR }}
-        target: int32
+        hypre-archive: ${{ env.HYPRE_ARCHIVE }}
+        hypre-dir: ${{ env.HYPRE_TOP_DIR }}

    - name: Cache Metis Install
      id: metis-cache
      uses: actions/cache@v2
      with:
        path: ${{ env.METIS_TOP_DIR }}
-        key: ${{ runner.os }}-build-${{ env.METIS_TOP_DIR }}-v2.0
+        key: ${{ runner.os }}-build-${{ env.METIS_TOP_DIR }}-v2

    - name: Install Metis
      if: steps.metis-cache.outputs.cache-hit != 'true'
-      uses: mfem/github-actions/build-metis@v2.0
+      uses: mfem/github-actions/build-metis@master
      with:
-        archive: ${{ env.METIS_ARCHIVE }}
-        dir: ${{ env.METIS_TOP_DIR }}
+        metis-archive: ${{ env.METIS_ARCHIVE }}
+        metis-dir: ${{ env.METIS_TOP_DIR }}

    # MFEM build and test
    - name: build-mfem
-      uses: mfem/github-actions/build-mfem@v2.0
+      uses: mfem/github-actions/build-mfem@master
      with:
        os: ${{ runner.os }}
        target: optim
@@ -28,24 +28,49 @@ jobs:
        access_token: ${{ github.token }}
    - name: checkout mfem
      uses: actions/checkout@v2
+      with:
+        path: mfem

    - name: copyright check
      id: copyright
      run: |
-        ./config/githooks/pre-push --copyright
-
+        cd mfem
+        if git grep -l "^\(#\|//\).*\(\-2020\|\ 2010,\)" > matches.txt
+        then
+          echo "Please update the following files to Copyright (c) 2010-2021:"
+          cat matches.txt
+          exit 1
+        else
+          echo "No outdated copyright found."
+        fi
      continue-on-error: true

    - name: license check
      id: license
      run: |
-        ./config/githooks/pre-push --license
+        cd mfem
+        if git grep -li "^\(#\|//\).*GNU\ Lesser\ General\ Public\ License" > matches.txt
+        then
+          echo "Please update the following files to the BSD-3 license:"
+          cat matches.txt
+          exit 1
+        else
+          echo "No GNU GPL license found."
+        fi
      continue-on-error: true

    - name: release check
      id: release
      run: |
-        ./config/githooks/pre-push --release
+        cd mfem
+        if git grep -l "^\(#\|//\).*LLNL\-CODE\-443211" > matches.txt
+        then
+          echo "Please update the following files to LLNL-CODE-806117:"
+          cat matches.txt
+          exit 1
+        else
+          echo "No outdated release number found."
+        fi
      continue-on-error: true

    - name: wrap-up
@@ -75,7 +100,8 @@ jobs:

    - name: style check
      run: |
-        ./config/githooks/pre-push --style
+        cd tests/scripts
+        ./runtest code-style

  documentation:
    runs-on: ubuntu-18.04
@@ -107,4 +133,5 @@ jobs:
      run: |
        git fetch origin master:master
        git checkout -b gh-actions-branch-history
-        ./config/githooks/pre-push --history
+        cd tests/scripts
+        ./runtest branch-history
@@ -26,7 +26,6 @@ CMakeFiles/
 config/_config.hpp
 config/config.mk
 config/sample-runs-build.log
-config/user.mk
 doc/CodeDocumentation.conf
 doc/CodeDocumentation.html
 doc/CodeDocumentation
@@ -145,14 +144,6 @@ examples/petsc/velocity.*
 examples/petsc/elastic_energy.*
 examples/petsc/mode_*

-examples/arpack/ex11
-examples/arpack/mode_*
-examples/arpack/ex11.mesh
-
-examples/spectra/ex11
-examples/spectra/mode_*
-examples/spectra/ex11.mesh
-
 examples/pumi/ex1
 examples/pumi/ex[126]p
 examples/pumi/refined.mesh
@@ -260,7 +251,6 @@ miniapps/shifted/ParaViewDistance
 miniapps/shifted/diffusion
 miniapps/shifted/diffusion.mesh
 miniapps/shifted/diffusion.gf
-miniapps/shifted/ParaViewDiffusion

 miniapps/tools/display-basis
 miniapps/tools/load-dc
@@ -305,7 +295,6 @@ tests/unit/psedov_tests_*
 tests/unit/tmop_pa_tests_*
 tests/unit/ptmop_pa_tests_*
 tests/unit/ceed_tests
-tests/unit/debug_device_tests

 # Test script output
 tests/scripts/*.err
@@ -318,13 +307,7 @@ tests/convergence/prates
 tests/par-mesh-format/ex1p

 # VPATH builds
-build-*/
-
-# User config
-user-*
-
-# VSCode
-.vscode 
+build-*/*

 # PETSc automated build
 petsc-build/*
@@ -48,59 +48,39 @@ variables:
  TPLS_REPO: ssh://git@mybitbucket.llnl.gov:7999/mfem/tpls.git
  TESTS_REPO: ssh://git@mybitbucket.llnl.gov:7999/mfem/tests.git
  AUTOTEST_REPO: ssh://git@mybitbucket.llnl.gov:7999/mfem/autotest.git
-  MFEM_DATA_REPO: https://github.com/mfem/data.git
  ARTIFACTS_DIR: artifacts
-  SLURM_OVERLAP: 1

-# The pipeline is divided into stages. Usually, jobs in a given stage wait for
-# the preceding stages to complete before to start. However, we sometimes use
-# the "needs" keyword and express the DAG of jobs for more efficiency.
-# - We use setup and setup_baseline phases to download content outside of mfem
-#   directory.
+# The pipeline is divided into stages. Usually, these are also synchronization
+# points, however, we use "needs" keyword to express the DAG of jobs for more
+# efficiency.
+# - We use setup phase to download content outside of mfem directory.
 # - Allocate/Release is where quartz resources are allocated/released once for all.
 # - Build and Test is where we build and MFEM for multiple toolchains.
 # - Baseline_checks gathers baseline-type test suites execution
 # - Baseline_publish, only available on master, allows to update baseline
 #   results
 stages:
-  - setup
  - q_allocate_resources
  - q_build_and_test
  - q_release_resources
  - l_build_and_test
  - c_build_and_test
-  - setup_baseline
+  - setup
  - baseline_check
  - baseline_to_autotest
  - baseline_publish

-# setup clones the mfem/data repo in ${BUILD_ROOT}. The build_and_test script
-# then symlinks the repo to the parent directory of the MFEM source directory.
-# Unit tests that depend on the mfem/data repo will then detect that this
-# directory is present and be enabled.
+# The setup job in setup stage don't rely on MFEM git repo. It prepares a
+# pipeline-wide working directory downloading/updating external repos.
+# TODO: updating tests and tpls is not necessary anymore since pipelines are
+# now using unique directories so repo are never shared with another pipeline.
+# This is not memory efficient (we keep a lot of data), hence this reminder.
+# Setup
 setup:
  tags:
    - shell
    - quartz
  stage: setup
-  variables:
-    GIT_STRATEGY: none
-  script:
-    - mkdir -p ${BUILD_ROOT} && cd ${BUILD_ROOT}
-    - if [ ! -d data ]; then git clone ${MFEM_DATA_REPO}; fi
-
-# The setup_baseline job in setup stage_baseline doesn't rely on MFEM git repo.
-# It prepares a pipeline-wide working directory downloading/updating external
-# repos. TODO: updating tests and tpls is not necessary anymore since pipelines
-# are now using unique directories so repo are never shared with another
-# pipeline. This is not memory efficient (we keep a lot of data), hence this
-# reminder.
-# Note: This job can start immediately.
-setup_baseline:
-  tags:
-    - shell
-    - quartz
-  stage: setup_baseline
  variables:
    GIT_STRATEGY: none
  script:
@@ -126,10 +106,10 @@ setup_baseline:
  script:
    - srun -p mi60 -t 15 -N 1 tests/gitlab/build_and_test

-# Lassen uses a different job scheduler (spectrum lsf) that does not allow
-# pre-allocation the same way slurm does.  We use pdebug queue on lassen to
-# speed-up the allocation.  However this would not be scalable to multiple
-# builds.
+# Lassen uses a different job scheduler (spectrum lsf) that does not
+# allow pre-allocation the same way slurm does.
+# We use pdebug queue on lassen to speed-up the allocation.
+# However this would not be scalable to multiple builds.
 .build_blueos_3_ppc64le_ib_script:
  script:
    - lalloc 1 -W 30 -q pdebug tests/gitlab/build_and_test
@@ -22,13 +22,12 @@

 # Spack helped builds
 # Generic lassen build job, extending build script
-# Note: Lassen jobs can start as soon as the setup job is complete.
 .build_and_test_on_lassen:
  extends: [.build_blueos_3_ppc64le_ib_script, .on_lassen]
  stage: l_build_and_test
-  needs: [setup]
+  needs: []

 opt_mpi_cuda_xl_16_1_1_8:
  variables:
-    SPEC: "%xl@16.1.1.8 +mpi +cuda cuda_arch=70"
+    SPEC: "%xl@16.1.1.8 +mpi +cuda cuda_arch=sm_70"
  extends: .build_and_test_on_lassen
@@ -16,13 +16,13 @@
    - shell
    - quartz
  rules:
-    # Don't run quartz jobs if...
+    # Don’t run quartz jobs if...
    - if: '$CI_COMMIT_BRANCH =~ /_qnone/ || $ON_QUARTZ == "OFF"'
      when: never
-    # Don't run autotest update if...
+    # Don’t run autotest update if...
    - if: '$CI_JOB_NAME =~ /update_autotest/ && $AUTOTEST != "YES"'
      when: never
-    # Don't run autotest update if...
+    # Don’t run autotest update if...
    - if: '$CI_JOB_NAME =~ /q_report/ && $AUTOTEST != "YES"'
      when: never
    # Report success on success status
@@ -37,18 +37,6 @@
    # Default is to run if previous stage succeeded
    - when: on_success

-# This is a yaml anchor, it can be used to avoid duplication like here.
-# The code below will simply be pasted wherever the anchor is placed.
-.safe_create_rundir: &safe_create_rundir |
-  if ! mkdir ${rundir}; then
-    n=1
-    while ! mkdir ${rundir}_${n}
-    do
-      n=$((n+1))
-    done
-    rundir=${rundir}_${n}
-  fi
-
 # Allocate
 q_allocate_resources:
  variables:
@@ -77,11 +65,10 @@ q_report_success:
  stage: q_release_resources
  script:
    - echo "Can only run if all the quartz jobs passed"
-    - cd ${AUTOTEST_ROOT}/autotest && git pull
    - rundir="gitlab/$(date +%Y-%m-%d)-github-${CI_COMMIT_REF_SLUG}"
-    - *safe_create_rundir
+    - cd ${AUTOTEST_ROOT}/autotest && git pull
+    - mkdir -p ${rundir}
    - echo "The Quartz jobs were successful" > ${rundir}/gitlab.out
-    - echo "See the pipeline here -> $CI_PIPELINE_URL" >> ${rundir}/gitlab.err
    - git add ${rundir}
    - git commit -am "Gitlab CI log for baseline on quartz with intel ($(date +%Y-%m-%d))"
    - git push origin master
@@ -93,11 +80,10 @@ q_report_failure:
  stage: q_release_resources
  script:
    - echo "Runs if there was at least one failure on quartz"
-    - cd ${AUTOTEST_ROOT}/autotest && git pull
    - rundir="gitlab/$(date +%Y-%m-%d)-github-${CI_COMMIT_REF_SLUG}"
-    - *safe_create_rundir
+    - cd ${AUTOTEST_ROOT}/autotest && git pull
+    - mkdir -p ${rundir}
    - echo "There was an error while running CI on Quartz" > ${rundir}/gitlab.err
-    - echo "See the pipeline here -> $CI_PIPELINE_URL" >> ${rundir}/gitlab.err
    - cp ${rundir}/gitlab.err ${rundir}/autotest-email.html
    - git add ${rundir}
    - git commit -am "Gitlab CI log for baseline on quartz with intel ($(date +%Y-%m-%d))"
@@ -150,29 +136,24 @@ opt_par_gcc_6_1_0_pumi:
    SPEC: "%gcc@6.1.0 +pumi"
  extends: .build_and_test_on_quartz

-# Baseline jobs form an independent set of jobs. We use `needs:[]` to specify
-# that "setup-baseline" can start immediately. Then, we have to use needs for
-# each one of the baseline jobs, otherwise they will wait for the rest of the
-# pipeline.
-
+# Baseline
 baselinecheck_mfem_intel_quartz:
  extends: [.baselinecheck_mfem, .on_quartz]
-  needs: [setup_baseline]
+  needs: [setup]

 update_autotest:
  extends: [.on_quartz]
  needs: [baselinecheck_mfem_intel_quartz]
  stage: baseline_to_autotest
  script:
-    - cd ${AUTOTEST_ROOT}/autotest && git pull
    - rundir="quartz/$(date +%Y-%m-%d)-github-${CI_COMMIT_REF_SLUG}"
-    - *safe_create_rundir
+    - cd ${AUTOTEST_ROOT}/autotest && git pull
+    - mkdir -p ${rundir}
    - cp ${CI_PROJECT_DIR}/${ARTIFACTS_DIR}/* ${rundir}
    # We create an autotest-email.html file, because that's how we signal that there was a diff (temporary).
    - |
      if [[ -f ${rundir}/*.err ]]
      then
-        echo "See the pipeline here -> $CI_PIPELINE_URL" >> ${rundir}/*.err
        cp ${rundir}/*.err ${rundir}/autotest-email.html
      fi
    - git add ${rundir}
@@ -0,0 +1,469 @@
+# Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
+# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
+# LICENSE and NOTICE for details. LLNL-CODE-806117.
+#
+# This file is part of the MFEM library. For more information and source code
+# availability visit https://mfem.org.
+#
+# MFEM is free software; you can redistribute it and/or modify it under the
+# terms of the BSD-3 license. We welcome feedback and contributions, see file
+# CONTRIBUTING.md for details.
+
+language: cpp
+
+os: linux
+dist: bionic
+
+stages:
+  - checks
+  - tests
+  - optional
+
+env:
+  global:
+    - HYPRE_ARCHIVE=v2.19.0.tar.gz
+      HYPRE_URL=https://github.com/hypre-space/hypre/archive/$HYPRE_ARCHIVE
+      HYPRE_TOP_DIR=hypre-2.19.0
+
+jobs:
+  include:
+
+    # ========================
+    #         Checks
+    # ========================
+    # - code-style
+    # - documentation
+    # - gitignore
+
+    - stage: checks
+      os: linux
+      dist: xenial
+      name: "code-style"
+      addons:
+        apt:
+          packages:
+            - astyle=2.05.1-0ubuntu1
+      script:
+        - cd ${TRAVIS_BUILD_DIR}
+        - cd tests/scripts
+        - ./runtest code-style
+
+    - stage: checks
+      os: linux
+      name: "documentation"
+      addons:
+        apt:
+          packages:
+            - doxygen
+            - graphviz
+      script:
+        - cd ${TRAVIS_BUILD_DIR}
+        - cd tests/scripts
+        - ./runtest documentation
+
+    - stage: checks
+      os: linux
+      name: "gitignore"
+      addons:
+        apt:
+          packages:
+            - mpich
+            - libmpich-dev
+      env: MPI=YES
+      before_script:
+        - cd ${TRAVIS_BUILD_DIR}
+        - mpicxx -v
+        - make config MFEM_USE_MPI=YES MFEM_MPI_NP=2
+        - make all -j3
+        - make test-noclean
+      script:
+        - cd tests/scripts
+        - ./runtest gitignore
+      cache:
+        ccache: true
+        directories:
+          - $TRAVIS_BUILD_DIR/../$HYPRE_TOP_DIR/src/hypre
+          - $TRAVIS_BUILD_DIR/../metis-4.0
+      before_cache:
+        - cd $TRAVIS_BUILD_DIR/../metis-4.0;
+          mv libmetis.a Lib ..; rm -rf * ; mv ../libmetis.a ../Lib .;
+          rm -f Lib/*.{c,o}
+
+    # ========================
+    #  Optional Checks/Tests
+    # ========================
+    # - branch-history
+
+    - stage: optional
+      name: "branch-history"
+      if: branch != next
+      # need full git history for the binary/big files check
+      git:
+        depth: false
+      script:
+        - cd ${TRAVIS_BUILD_DIR}
+        # update master
+        - git fetch origin master:master
+        # checkout a branch (otherwise Travis works in detached head)
+        - git checkout -b travis_tests
+        - cd tests/scripts
+        - ./runtest branch-history
+
+    # ========================
+    #       Linux tests
+    # ========================
+    # - serial + debug
+    # - serial
+    # - parallel + debug
+    # - parallel
+
+    - stage: tests
+      os: linux
+      compiler: gcc
+      name: "Linux: Serial + Debug"
+      env: DEBUG=YES
+           MPI=NO
+           CODECOV=NO
+           MFEM_TEST_TARGET=check
+      cache:
+        ccache: true
+
+    - os: linux
+      compiler: gcc
+      name: "Linux: Serial"
+      env: DEBUG=NO
+           MPI=NO
+           CODECOV=NO
+           MFEM_TEST_TARGET=test
+      cache:
+        ccache: true
+
+    - os: linux
+      compiler: gcc
+      name: "Linux: Parallel + Debug"
+      addons:
+        apt:
+          # sources:
+            # - ubuntu-toolchain-r-test
+          packages:
+            # GCC 4.9
+            # - g++-4.9
+            # MPICH
+            - mpich
+            - libmpich-dev
+            # OpenMPI
+            # - openmpi-bin
+            # - libopenmpi-dev
+      env: DEBUG=YES
+           MPI=YES
+           CODECOV=NO
+           MFEM_TEST_TARGET=check
+           NPROCS=2
+      cache:
+        ccache: true
+        directories:
+          - $TRAVIS_BUILD_DIR/../$HYPRE_TOP_DIR/src/hypre
+          - $TRAVIS_BUILD_DIR/../metis-4.0
+      before_cache:
+        - cd $TRAVIS_BUILD_DIR/../metis-4.0;
+          mv libmetis.a Lib ..; rm -rf * ; mv ../libmetis.a ../Lib .;
+          rm -f Lib/*.{c,o}
+
+    - os: linux
+      compiler: gcc
+      name: "Linux: Parallel"
+      addons:
+        apt:
+          # sources:
+            # - ubuntu-toolchain-r-test
+          packages:
+            # GCC 4.9
+            # - g++-4.9
+            # MPICH
+            - mpich
+            - libmpich-dev
+            # OpenMPI
+            # - openmpi-bin
+            # - libopenmpi-dev
+      env: DEBUG=NO
+           MPI=YES
+           CODECOV=YES
+           MFEM_TEST_TARGET=test
+           NPROCS=2
+      cache:
+        ccache: true
+        directories:
+          - $TRAVIS_BUILD_DIR/../$HYPRE_TOP_DIR/src/hypre
+          - $TRAVIS_BUILD_DIR/../metis-4.0
+      before_cache:
+        - cd $TRAVIS_BUILD_DIR/../metis-4.0;
+          mv libmetis.a Lib ..; rm -rf * ; mv ../libmetis.a ../Lib .;
+          rm -f Lib/*.{c,o}
+
+    - os: linux
+      compiler: gcc
+      name: "Linux: Parallel (cmake)"
+      addons:
+        apt:
+          packages:
+            - mpich
+            - libmpich-dev
+      env: MPI=YES
+           NPROCS=2
+      script:
+        - cd ${TRAVIS_BUILD_DIR}
+        - mkdir ${TRAVIS_BUILD_DIR}/build
+        - cd ${TRAVIS_BUILD_DIR}/build
+        - cmake ..
+             -DMFEM_USE_MPI=ON
+             -DHYPRE_DIR=${TRAVIS_BUILD_DIR}/../$HYPRE_TOP_DIR/src/hypre
+             -DMFEM_MPI_NP=$NPROCS
+        - make -j3 mfem examples
+        - cd ${TRAVIS_BUILD_DIR}/build/tests/unit
+        - make -j3
+        - ctest --output-on-failure
+      cache:
+        ccache: true
+        directories:
+          - $TRAVIS_BUILD_DIR/../$HYPRE_TOP_DIR/src/hypre
+          - $TRAVIS_BUILD_DIR/../metis-4.0
+      before_cache:
+        - cd $TRAVIS_BUILD_DIR/../metis-4.0;
+          mv libmetis.a Lib ..; rm -rf * ; mv ../libmetis.a ../Lib .;
+          rm -f Lib/*.{c,o}
+
+    # ========================
+    #      Mac OS X tests
+    # ========================
+    # - serial + debug
+    # - serial
+    # - parallel + debug
+    # - parallel
+
+    - os: osx
+      osx_image: xcode11.2
+      compiler: clang
+      name: "Mac: Serial + Debug"
+      addons:
+        homebrew:
+          packages:
+            - ccache
+      env: DEBUG=YES
+           MPI=NO
+           CODECOV=NO
+           MFEM_TEST_TARGET=check
+      cache:
+        ccache: true
+
+    - os: osx
+      osx_image: xcode11.2
+      compiler: clang
+      name: "Mac: Serial"
+      addons:
+        homebrew:
+          packages:
+            - ccache
+      env: DEBUG=NO
+           MPI=NO
+           CODECOV=NO
+           MFEM_TEST_TARGET=test
+      cache:
+        ccache: true
+
+    - os: osx
+      osx_image: xcode11.2
+      compiler: clang
+      name: "Mac: Parallel + Debug"
+      addons:
+        homebrew:
+          packages:
+            - ccache
+      env: DEBUG=YES
+           MPI=YES
+           CODECOV=NO
+           MFEM_TEST_TARGET=check
+           NPROCS=4
+           TMPDIR=/tmp
+      cache:
+        ccache: true
+        directories:
+          - $TRAVIS_BUILD_DIR/../$HYPRE_TOP_DIR/src/hypre
+          - $TRAVIS_BUILD_DIR/../metis-4.0
+          - $HOME/local-cached
+      before_cache:
+        - cd $TRAVIS_BUILD_DIR/../metis-4.0;
+          mv libmetis.a Lib ..; rm -rf * ; mv ../libmetis.a ../Lib .;
+          rm -f Lib/*.{c,o}
+
+    - os: osx
+      osx_image: xcode11.2
+      compiler: clang
+      name: "Mac: Parallel"
+      addons:
+        homebrew:
+          packages:
+            - ccache
+      env: DEBUG=NO
+           MPI=YES
+           CODECOV=YES
+           MFEM_TEST_TARGET=test
+           NPROCS=4
+           TMPDIR=/tmp
+      cache:
+        ccache: true
+        directories:
+          - $TRAVIS_BUILD_DIR/../$HYPRE_TOP_DIR/src/hypre
+          - $TRAVIS_BUILD_DIR/../metis-4.0
+          - $HOME/local-cached
+      before_cache:
+        - cd $TRAVIS_BUILD_DIR/../metis-4.0;
+          mv libmetis.a Lib ..; rm -rf * ; mv ../libmetis.a ../Lib .;
+          rm -f Lib/*.{c,o}
+
+before_install:
+   # No addon for brew yet, have to install OSX packages this way.
+   # - if [ $TRAVIS_OS_NAME == "osx" ] && [ $MPI == "YES" ]; then
+   #      brew install open-mpi;
+   #   fi
+
+   # Disable ccache while building dependencies that are cached:
+   - echo "before \$PATH = $PATH";
+     export PATH=${PATH//\/usr\/lib\/ccache:/};
+     echo "after  \$PATH = $PATH"
+
+   # On Mac OS X, build and cache OpenMPI 2.1.6:
+   - if [ $TRAVIS_OS_NAME == "osx" ] && [ $MPI == "YES" ]; then
+        if [ ! -e $HOME/local-cached/bin/mpicc ]; then
+           mkdir -p $HOME/builds && cd $HOME/builds &&
+           wget https://download.open-mpi.org/release/open-mpi/v2.1/openmpi-2.1.6.tar.bz2 &&
+           tar jxf openmpi-2.1.6.tar.bz2 &&
+           mkdir openmpi-build && cd openmpi-build &&
+           ../openmpi-2.1.6/configure --prefix=$HOME/local-cached &&
+           make -j3 all && make install;
+        fi;
+        PATH=$HOME/local-cached/bin:$PATH;
+        cd $TRAVIS_BUILD_DIR;
+     fi
+
+   # Update environment to find g++ 4.9 installation first.
+   # - if [ $TRAVIS_OS_NAME == "linux" ]; then
+   #      mkdir -p latest-gcc-symlinks;
+   #      ln -s /usr/bin/g++-4.9 latest-gcc-symlinks/g++;
+   #      ln -s /usr/bin/gcc-4.9 latest-gcc-symlinks/gcc;
+   #      ln -s /usr/bin/gcov-4.9 latest-gcc-symlinks/gcov;
+   #      export PATH=$PWD/latest-gcc-symlinks:$PATH;
+   #   fi
+
+   # Install tool to upload code coverage reports to coveralls.io
+   - if [ "$CODECOV" == "YES" ]; then
+        export PYTHONUSERBASE=$HOME/local;
+        pip install --user cpp-coveralls;
+        pip install --user pyyaml;
+        PATH=$HOME/local/bin:$PATH;
+     fi
+
+install:
+   # Set MPI compilers, print compiler version
+   - if [ $MPI == "YES" ]; then
+        if [ "$TRAVIS_OS_NAME" == "linux" ]; then
+           export MPICH_CC="$CC";
+           export MPICH_CXX="$CXX";
+        else
+           export OMPI_CC="$CC";
+           export OMPI_CXX="$CXX";
+           mpic++ --showme:version;
+        fi;
+        mpic++ -v;
+     else
+        $CXX -v;
+     fi
+
+   # Back out of the mfem directory to install the libraries
+   - cd ..
+
+   # hypre
+   - if [ $MPI == "YES" ]; then
+        if [ ! -e $HYPRE_TOP_DIR/src/hypre/lib/libHYPRE.a ]; then
+           wget $HYPRE_URL;
+           rm -rf $HYPRE_TOP_DIR;
+           tar xvzf $HYPRE_ARCHIVE;
+           cd $HYPRE_TOP_DIR/src;
+           ./configure --disable-fortran CC=mpicc CXX=mpic++;
+           make -j3;
+           cd ../..;
+        else
+            echo "Reusing cached $HYPRE_TOP_DIR/";
+        fi;
+        ln -s $HYPRE_TOP_DIR hypre;
+     else
+        echo "Serial build, not using hypre";
+     fi
+
+   # METIS, use a mirror because the original source server is not always up.
+   # Original url:
+   #    http://glaros.dtc.umn.edu/gkhome/fetch/sw/metis/OLD/metis-4.0.3.tar.gz
+   - if [ $MPI == "YES" ]; then
+        if [ ! -e metis-4.0/libmetis.a ]; then
+           wget https://mfem.github.io/tpls/metis-4.0.3.tar.gz;
+           tar xvzf metis-4.0.3.tar.gz;
+           make -j3 -C metis-4.0.3/Lib CC="$CC" OPTFLAGS="-O2";
+           rm -rf metis-4.0;
+           mv metis-4.0.3 metis-4.0;
+        else
+           echo "Reusing cached metis-4.0/";
+        fi;
+     fi
+
+   # Re-enable ccache on linux; enable ccache on mac os:
+   - if [ $TRAVIS_OS_NAME == "linux" ]; then
+        export PATH="/usr/lib/ccache:$PATH";
+     else
+        if [ $TRAVIS_OS_NAME == "osx" ]; then
+           export PATH="/usr/local/opt/ccache/libexec:$PATH";
+        fi;
+     fi
+
+   - printf "which \$CC  = "; which $CC;
+     printf "which \$CXX = "; which $CXX
+
+script:
+   # Compiler
+   - if [ $MPI == "YES" ]; then
+        export MYCXX=mpic++;
+        export MAKE_CXX_FLAG=MPICXX=$MYCXX;
+     else
+        export MYCXX="$CXX";
+        export MAKE_CXX_FLAG=CXX=$MYCXX;
+     fi
+
+   # Print the compiler version
+   - $MYCXX -v
+
+   # Set some variables
+   - cd $TRAVIS_BUILD_DIR;
+     CPPFLAGS="";
+     SKIP_TEST_DIRS="";
+     if [ "$CODECOV" == "YES" ]; then
+        CPPFLAGS="--coverage -g";
+     fi;
+     if [ "$TRAVIS_OS_NAME" != "linux" ] || [ "$DEBUG" == "YES" ]; then
+        CPPFLAGS+=" -pedantic -Wall -Werror";
+     fi
+
+   # Configure the library
+   - make config MFEM_USE_MPI=$MPI MFEM_DEBUG=$DEBUG $MAKE_CXX_FLAG
+        MFEM_MPI_NP=$NPROCS CPPFLAGS="$CPPFLAGS"
+   # Show the configuration
+   - make info
+   # Build the library
+   - make -j3
+   # Build the examples and the miniapps
+   - make -j3 all
+   # Run tests
+   - make $MFEM_TEST_TARGET SKIP_TEST_DIRS="$SKIP_TEST_DIRS"
+
+after_success:
+   - if [ "$CODECOV" == "YES" ]; then
+        coveralls --include fem --include general --include linalg --include
+           mesh --exclude /usr --gcov-options '\-lp' --root $TRAVIS_BUILD_DIR;
+     fi
@@ -8,90 +8,40 @@
                               https://mfem.org


-Version 4.3.1 (development)
+Version 4.2.1 (development)
 ===========================
- Added support for hr-adaptivity using TMOP-based error estimator.
+- Added initial support for GPU-accelerated versions of PETSc that works with
+  MFEM_USE_CUDA if PETSc has been configured with CUDA support. Examples 1 and 9
+  in the examples/petsc directory have been modified to work with --device cuda.
+  Examples with GAMG (ex1p) and SLEPc (ex11p) are also provided.

- Adding lowest order Nedelec and Raviart-Thomas basis functions on wedge
-  shaped elements.
+- Memory management:
+  * Added method Device::SetMemoryTypes that can be used to change the default
+    host and device MemoryTypes before Device setup.
+  * In class MemoryManager, added methods GetDualMemoryType and
+    SetDualMemoryType; dual MemoryTypes are used to determine the second
+    MemoryType (host or device) when only one MemoryType is specified in methods
+    of class Memory.
+  * Added Memory constructor for setting both the host and device MemoryTypes.
+  * Switched the default behavior of device memory allocations so that they
+    are deferred until the device pointer is needed.
+  * Added a second Umpire device MemoryType, DEVICE_UMPIRE_2, with
+    corresponding allocator that can be set with the method
+    MemoryManager::SetUmpireDevice2AllocatorName.
+  * Added HOST_PINNED MemoryType and a pinned host allocator for CUDA and HIP.

- Added initial support for meshes with pyramidal elements, including several
-  pyramidal meshes in the data/ directory and support for the lowest order H1,
-  Nedelec, Raviart-Thomas, and L2 basis functions on pyramids.
+- Added support for Caliper: a library to integrate performance profiling
+  capabilities into applications. See examples/caliper for more details.

- Updated the hypre interface according to changes in hypre-2.22.1. The ADS
-  solver is now fully working on GPUs.
+- Added support for explicit vectorization in the high-performance templated
+  code for Fujitsu's A64FX ARM microprocessor architecture.

- Tetrahedral meshes no longer need to be reordered to support high order
-  Nedelec basis functions. This will allow future support for Nedelec basis
-  functions on wedges and pyramids which are not amenable to reordering. The
-  ReorientTetMesh method of the Mesh and ParMesh classes has been deprecated.
+- Added AlgebraicCeedSolver that does matrix-free algebraic p-multigrid for
+  diffusion problems with the Ceed backend.

- Gmsh meshes where all elements have zero physical tag (the default Gmsh
-  output format if no physical groups are defined) are now successfully loaded,
-  and elements are reassigned attribute number 1.
-
-Version 4.3, released on July 29, 2021
-======================================
-
-Discretization improvements
---------------------------
- Variable order spaces, p- and hp-refinement. This is the initial (serial)
-  support for variable-order FiniteElementCollection and FiniteElementSpace.
-  The new method FiniteElementSpace::SetElementOrder can be called to set an
-  arbitrary order for each mesh element. The conforming interpolation matrix
-  will now automatically constrain p- and hp- interfaces, enabling general
-  hp-refinement in both 2D and 3D, on uniform or mixed NC meshes. Support for
-  parallel variable-order spaces will follow shortly.
-
- Extended the support for field transfer between high-order and low-order
-  refined finite element spaces to include: dual fields and H1 fields (both
-  primary and dual). These are illustrated in the lor-transfer miniapp.
-
- Improved libCEED integration, including support for VectorCoefficient,
-  ConvectionIntegrator, and VectorConvectionNLFIntegrator with libCEED backends.
-
- Extending support for L2 basis functions using MapTypes VALUE and INTEGRAL in
-  linear interpolators and GridFunction "GetValue" methods.
-
- Changed the interface for the error estimator and implemented the Kelly error
-  indicator for scalar-valued problems, supported in serial and parallel builds.
-
- Added support for the "BR2" discontinuous Galerkin discretization for
-  diffusion via DGDiffusionBR2Integrator (see Example 14/14p).
-
- Added convective and skew-symmetric integrators for the nonlinear term in the
-  Navier-Stokes equations.
-
- Added new classes DenseSymmetricMatrix and SymmetricMatrixCoefficient for
-  efficient evaluation of symmetric matrix coefficients. This replaces the now
-  deprecated EvalSymmetric in MatrixCoefficient. Added DiagonalMatrixCoefficient
-  for clarity, which is a typedef of VectorCoefficient.
-
- Added support for nonscalar coefficient with VectorDiffusionIntegrator.
-
-Linear and nonlinear solvers
----------------------------
- Added support for AMG preconditioners on GPUs based on the hypre library
-  (version 2.22.0 or later). These include BoomerAMG, AMS and ADS and most
-  MFEM examples that use hypre have been ported to support this functionality.
-  The GPU preconditioners require that both hypre and MFEM are built with CUDA
-  support. Hypre builds with CUDA and unified memory are also supported and
-  can be used with `-d cuda:uvm` as a command-line option.
-
- Added support for AMG preconditioners for non-symmetric systems (e.g.
-  advection-dominated problems) using hypre's approximate ideal restriction
-  (AIR) AMG. Requires hypre version 2.14.0 or newer. Usage is illustrated in
-  example 9/9p.
-
- Added new functionality for constructing low-order refined discretizations and
-  solvers, see the LORDiscretization and LORSolver classes. A new basis type for
-  H(curl) and H(div) spaces is introduced to give spectral equivalence. This
-  functionality is illustrated in the LOR solvers miniapp in miniapps/solvers.
-
- Generalized the Multigrid class to support non-geometric multigrid. Previous
-  functionality, based on FiniteElementSpaceHierarchy, is now available in the
-  derived class GeometricMultigrid.
+- Introduced new options for the mesh-explorer miniapp to visualize the actual
+  element attributes in parallel meshes while retaining the visualization of
+  the domain decomposition.

 - Introduced solver interface for linear problems with constraints, a few
  concrete solvers that implement the interface, and a demonstration of their
@@ -102,18 +52,19 @@ Linear and nonlinear solvers
  as described in Barker and Kolev 2020 (https://doi.org/10.1002/nla.2348). See
  Example 3p and linalg/auxiliary.?pp.

- Improved interface for using the Ginkgo library, including: support for matrix-
-  free operators in Ginkgo solvers, new wrappers for Ginkgo preconditioners, HIP
-  support, and reduction of unnecessary data copies.
+- Added a new miniapp block-solvers that compares the performance of various
+  solvers for mixed finite element discretization of the second order scalar
+  elliptic equations. Currently available solvers in the miniapp include a
+  block-diagonal preconditioner that is based on approximate Schur complement
+  (implemented in ex5p), and a newly implemented solver DivFreeSolver, which
+  exploits a multilevel decomposition of the Raviart-Thomas space and its
+  divergence-free subspace. See the miniapps/solvers directory for more details.

- Added initial support for hypre's mixed integer (mixedint) capability, which
-  uses different data types for local and global indices in order to save memory
-  in large problems. This capability requires that hypre was configured with the
-  --enable-mixedint option. Note that this option is currently tested only in
-  ex1p, ex3p, and ex4p, and may not work in more general settings.
+- Added a new miniapp for computing (signed) distance functions to a point
+  source or zero level set. See miniapps/shifted/distance.cpp.

- Added AlgebraicCeedSolver that does matrix-free algebraic p-multigrid for
-  diffusion problems with the Ceed backend.
+- Added matrix-free GPU-enabled implementations of GradientInterpolator and
+  IdentityInterpolator.

 - Added interface to MUMPS direct solver. Its usage is demonstrated in ex25p.
  See http://mumps.enseeiht.fr/ for more details. Supported versions >= 5.1.1.
@@ -121,17 +72,6 @@ Linear and nonlinear solvers
 - Added three ESDIRK time integrators: implicit trapezoid rule, L-stable
  ESDIRK-32, and A-stable ESDIRK-33.

- Implemented a variable step-size IMEX (VSSIMEX) method for the Navier miniapp.
-
- Implemented an adaptive linear solver tolerance option for NewtonSolver based
-  on the algorithm of Eisenstat and Walker.
-
-Meshing improvements
--------------------
- Added support for reading high-order Lagrange meshes in VTK format. Arbitrary-
-  orders and all element types are supported. See the VTK blog for more info:
-  https://blog.kitware.com/wp-content/uploads/2018/09/Source_Issue_43.pdf.
-
 - Introduced a new non-conforming mesh format that fixes known inconsistencies
  of legacy "MFEM mesh v1.1" NC format and works consistently in both serial and
  parallel. ParMesh::ParPrint can now print non-conforming AMR meshes that can
@@ -140,26 +80,109 @@ Meshing improvements
  NC data files are compatible with serial code, e.g., can be viewed with serial
  GLVis. Loading of legacy NC mesh files is still supported.

- Added FMS support (https://github.com/CEED/FMS) to mfem. FMS can represent
-  unstructured high-order meshes with general high-order finite element fields
-  on them. When enabled, mfem can convert data collections to/from FMS data
-  collections in memory. In addition, an FMS data collection class was added so
-  the convert-dc miniapp can read and generate data files in FMS format.
+- Added support for 1D non-conforming meshes (which can be useful for parallel
+  load balancing and derefinement).
+
+- Added a "scaled Jacobian" visualization option in the Mesh Explorer miniapp to
+  help identify elements with poor mesh quality.
+
+- Added support for the "BR2" discontinuous Galerkin discretization for
+  diffusion via DGDiffusionBR2Integrator (see Example 14/14p).
+
+- Generalized the Multigrid class to support non-geometric multigrid. The
+  previous functionality, based on FiniteElementSpaceHierarchy, is now available
+  in the derived class GeometricMultigrid.
+
+- Upgraded the Catch unit test framework from version 2.13.0 to version 2.13.2.
+
+- The TMOP mesh optimization algorithms were extended to GPU:
+   - QualityMetric #1, #2, #7 and #77 are available in 2D, #302, #303, #315
+     and #321 in 3D
+   - Both AnalyticAdaptTC and DiscreteAdaptTC TargetConstructor are available
+   - Kernels for normalization and limiting have been added
+   - The AdvectorCG now also supports AssemblyLevel::PARTIAL
+
+- Added a new command line boolean option (`--all`) to the unit tests to launch
+  *all* non-regression tests.
+
+- Added support for different modes of QuadratureInterpolator on GPU.
+  The layout (QVectorLayout::byNODES|byVDIM) and the tensor products modes can
+  be enabled before calling the Mult, Values, Derivatives, PhysDerivatives and
+  Determinants methods.
+
+- Implemented a filter method for the Navier miniapp to stabilize highly
+  turbulent flows in direct numerical simulation.
+
+- Added HIP support to the CMake build system.
+
+- Added support for reading high-order Lagrange meshes in VTK format. Arbitrary-
+  orders and all element types are supported. See the VTK blog for more info:
+  https://blog.kitware.com/wp-content/uploads/2018/09/Source_Issue_43.pdf.
+
+- Added support for reading VTK meshes in XML format.
+
+- Added partial assembly and device support to Example 25/25p, with diagonal
+  preconditioning.
+
+- Implemented a variable step-size IMEX (VSSIMEX) method for the Navier miniapp.

 - Added new mesh quality metrics and improved the untangling capabilities of the
  TMOP-based mesh optimization algorithms.

- The TMOP mesh optimization algorithms were extended to GPU:
-  * QualityMetric 1, 2, 7, 77 are available in 2D, 302, 303, 315, 321 in 3D
-  * Both AnalyticAdaptTC and DiscreteAdaptTC TargetConstructor are available
-  * Kernels for normalization and limiting have been added
-  * The AdvectorCG now also supports AssemblyLevel::PARTIAL
+- Added convective and skew-symmetric integrators for the nonlinear term in the
+  Navier-Stokes equations.
+
+- Added new miniapp directory mtop/ with optimization-oriented block parametric
+  non-linear form and abstract integrators. Two new miniapps, ParHeat and
+  SeqHeat, demonstrate parallel and sequential implementation of gradients
+  evaluation for linear diffusion with discrete density.
+
+- Changed the interface for the error estimator.
+
+- Implemented the Kelly error indicator for scalar-valued problems, supported
+  in serial and parallel builds.
+
+- Added new classes DenseSymmetricMatrix and SymmetricMatrixCoefficient for
+  efficient evaluation of symmetric matrix coefficients. This replaces the now
+  deprecated EvalSymmetric in MatrixCoefficient. Added DiagonalMatrixCoefficient
+  for clarity, which is a typedef of VectorCoefficient.
+
+- Added support for AMG preconditioners for non-symmetric systems (e.g.
+  advection-dominated problems) using hypre's approximate ideal restriction
+  (AIR) AMG. Requires hypre version 2.14.0 or newer. Usage is illustrated in
+  example 9/9p.
+
+- Implemented an adaptive linear solver tolerance option for NewtonSolver based
+  on the algorithm of Eisenstat and Walker.
+
+- Added support for nonscalar coefficient with VectorDiffusionIntegrator.
+
+- Extending support for L2 basis functions using MapTypes VALUE and INTEGRAL in
+  linear interpolators and GridFunction "GetValue" methods.
+
+- Variable order spaces, p- and hp-refinement. This is the initial (serial)
+  support for variable-order FiniteElementCollection and FiniteElementSpace.
+  The new method FiniteElementSpace::SetElementOrder can be called to set an
+  arbitrary order for each mesh element. The conforming interpolation matrix
+  will now automatically constrain p- and hp- interfaces, enabling general
+  hp-refinement in both 2D and 3D, on uniform or mixed NC meshes. Support for
+  parallel variable-order spaces will follow shortly.

 - Added support for creating refined meshes for all element types (e.g. by
  splitting high-order elements into low-order refined elements), including
  mixed meshes. The LOR Transfer miniapp (miniapps/tools/lor-transfer.cpp) now
  supports meshes with any element geometry.

+- Gitlab CI: use Spack (and Uberenv) to automate the build of TPLs.
+
+- Added new miniapps demonstrating: 1) the use of GSLIB for overlapping grids,
+  see gslib/schwarz_ex1, and 2) coupling different physics in different domains,
+  see navier/cht. Note that gslib v1.0.7 is require (see INSTALL for details).
+
+- Added a new, very simple example (ex0 and parallel version ex0p). This
+  example solves a simple Poisson problem using H1 elements (the same problem as
+  ex1), but is intended to be extremely simple and approachable for new users.
+
 - Meshes consisting of any type of elements (including mixed meshes) can be
  converted to all-simplex meshes using Mesh::MakeSimplicial.

@@ -172,147 +195,56 @@ Meshing improvements
  requisite periodic vertex mappings can be created with
  Mesh::CreatePeriodicVertexMapping.

- Added support for 1D non-conforming meshes (which can be useful for parallel
-  load balancing and derefinement).
+- Added support for transferring dual fields between high-order and low-order
+  refined finite element spaces using the transposed versions of the
+  L2ProjectionGridTransfer operators. This functionality is illustrated in the
+  lor-transfer miniapp.
+
+- Improved interface for using the Ginkgo library, including: support for matrix-
+  free operators in Ginkgo solvers, new wrappers for Ginkgo preconditioners, HIP
+  support, and reduction of unnecessary data copies.
+
+- Added initial support for hypre's mixed integer (mixedint) capability, which
+  uses different data types for local and global indices in order to save memory
+  in large problems. This capability requires that hypre was configured with the
+  --enable-mixedint option. Note that this option is currently tested only in
+  ex1p and may not work in more general settings.
+
+- Added support for transferring fields (primary and dual) between high-order
+  and low-order refined H1 finite element spaces using the
+  L2ProjectionH1GridTransfer operators. This functionality is demonstrated
+  through the lor-transfer miniapp when run with the -h1 option.
+
+- Added new functionality for constructing low-order refined discretizations and
+  solvers, see the LORDiscretization and LORSolver classes. A new basis type for
+  H(curl) and H(div) spaces is introduced to give spectral equivalence. This
+  functionality is illustrated in the LOR solvers miniapp in miniapps/solvers.

 - Added sample meshes in the `data` subdirectory showing the reference elements
  of the six currently supported element types; ref-segment.mesh,
  ref-triangle.mesh, ref-square.mesh, ref-tetrahedron.mesh, ref-cube.mesh, and
  ref-prism.mesh.

-High-performance computing
--------------------------
- Added initial support for GPU-accelerated versions of PETSc that works with
-  MFEM_USE_CUDA if PETSc has been configured with CUDA support. Examples 1 and 9
-  in the examples/petsc directory have been modified to work with --device cuda.
-  Examples with GAMG (ex1p) and SLEPc (ex11p) are also provided.
-
- Added support for explicit vectorization in the high-performance templated
-  code for Fujitsu's A64FX ARM microprocessor architecture.
-
- Added support for different modes of QuadratureInterpolator on GPU.
-  The layout (QVectorLayout::byNODES|byVDIM) and the tensor products modes can
-  be enabled before calling the Mult, Values, Derivatives, PhysDerivatives and
-  Determinants methods.
-
- Added method Device::SetMemoryTypes that can be used to change the default
-  host and device MemoryTypes before Device setup.
-
- In class MemoryManager, added methods GetDualMemoryType and SetDualMemoryType;
-  dual MemoryTypes are used to determine the second MemoryType (host or device)
-  when only one MemoryType is specified in methods of class Memory.
-
- Added Memory constructor for setting both the host and device MemoryTypes.
-
- Switched the default behavior of device memory allocations so that they are
-  deferred until the device pointer is needed.
-
- Added a second Umpire device MemoryType, DEVICE_UMPIRE_2, with corresponding
-  allocator that can be set with the method SetUmpireDevice2AllocatorName.
-
- Added HOST_PINNED MemoryType and a pinned host allocator for CUDA and HIP.
-
- Added matrix-free GPU-enabled implementations of GradientInterpolator and
-  IdentityInterpolator.
-
-New and updated examples and miniapps
-------------------------------------
- Added a new, very simple example (ex0 and parallel version ex0p). This example
-  solves a simple Poisson problem using H1 elements (the same problem as ex1),
-  but is intended to be extremely simple and approachable for new users.
-
- Added new miniapps demonstrating: 1) the use of GSLIB for overlapping grids,
-  see gslib/schwarz_ex1, and 2) coupling different physics in different domains,
-  see navier/cht. Note that gslib v1.0.7 is require (see INSTALL for details).
-
- Added a new miniapp for computing (signed) distance functions to a point
-  source or zero level set. See miniapps/shifted/distance.cpp.
-
 - Added a high-order extension of the shifted boundary method to solve PDEs on
  non body-fitted meshes. This is illustrated in the new Shifted Diffusion
  miniapp, see miniapps/shifted/diffusion.cpp.

- Added new miniapp directory mtop/ with optimization-oriented block parametric
-  non-linear form and abstract integrators. Two new miniapps, ParHeat and
-  SeqHeat, demonstrate parallel and sequential implementation of gradients
-  evaluation for linear diffusion with discrete density.
-
- Added a new miniapp block-solvers that compares the performance of various
-  solvers for mixed finite element discretization of the second order scalar
-  elliptic equations. Currently available solvers in the miniapp include a
-  block-diagonal preconditioner that is based on approximate Schur complement
-  (implemented in ex5p), and a newly implemented solver DivFreeSolver, which
-  exploits a multilevel decomposition of the Raviart-Thomas space and its
-  divergence-free subspace. See the miniapps/solvers directory for more details.
-
- Introduced new options for the mesh-explorer miniapp to visualize the actual
-  element attributes in parallel meshes while retaining the visualization of the
-  domain decomposition.
-
- Added partial assembly and device support to Example 25/25p, with diagonal
-  preconditioning.
-
- Implemented a filter method for the Navier miniapp to stabilize highly
-  turbulent flows in direct numerical simulation.
-
-Improved testing
----------------
- Transitioned from Travis to GitHub Action for testing/CI on GitHub.
-
- Use Spack (and Uberenv) to automate TPL building in LLNL GitLab tests.
-
- Extended `make test` to include GPU tests when MFEM is built with CUDA or HIP
-  support.
-
- Added a set of suggested git hooks for developers in config/githooks.
-
- Added support for Caliper: a library to integrate performance profiling
-  capabilities into applications. See examples/caliper for more details.
-
- Added a new command line boolean option (`--all`) to the unit tests to launch
-  *all* non-regression tests.
-
- Upgraded the Catch unit test framework from version 2.13.0 to version 2.13.2.
-
-Miscellaneous
-------------
- The following integrations have updated minimum version requirements:
-  * CUDA >= 10.1.168
-  * Ginkgo >= 1.4.0
-  * GSLIB >= 1.0.7
-  * HIOP >= 0.4
-  * HYPRE >= 2.20.0 for mixedint support
-  * HYPRE >= 2.22.0 for CUDA support
-  * libCEED >= 0.8
-  * PETSc >= 3.15.0 for CUDA support
-  * RAJA >= 0.13.0
-  see INSTALL for more details.
-
- Added a "scaled Jacobian" visualization option in the Mesh Explorer miniapp to
-  help identify elements with poor mesh quality.
-
- Added support for reading VTK meshes in XML format.
-
 - Added makefile rule to generate TAGS table for vi or Emacs users.

- Added HIP support to the CMake build system.
+libCEED integration improvements
+--------------------------------
+- Refactor the libCEED integration

- Various other simplifications, extensions, and bugfixes in the code.
+- Add support for VectorCoefficient with libCEED backends.

-API changes
-----------
- Added an abstract interface `mfem::FaceRestriction` for `H1FaceRestriction`
-  and `L2FaceRestriction`.
-  In order to conform with the semantic of `MultTranspose` in `mfem::Operator`,
-  `mfem::FaceRestriction::MultTranspose` now sets instead of adding values, and
-  `mfem::FaceRestriction::AddMultTranspose` should replace previous calls to
-  `mfem::FaceRestriction::MultTranspose`.
+- Add support for ConvectionIntegrator, and VectorConvectionNLFIntegrator with
+  libCEED backends.


 Version 4.2, released on October 30, 2020
 =========================================

-High-performance computing
+High-Performance Computing
 --------------------------
 - Added support for explicit vectorization in the high-performance templated
  code, which can now take advantage of specific classes on the following
@@ -394,6 +326,9 @@ Linear and nonlinear solvers
  matrix with the function HypreParMatrixFromBlocks. This could be useful for
  solving block systems with parallel direct solvers such as STRUMPACK.

+- Added CUDA support for SUNDIALS ODE integrators. See the updated SUNDIALS
+  modification of Example 9/9p.
+
 - Added wrappers for hypre's flexible GMRES solver and the new parallel ILU
  preconditioner. The latter requires hypre version 2.19.0 or later.

@@ -504,7 +439,7 @@ New and updated examples and miniapps
    L2, with partial assembly support in Example 24/24p.
  * Weak Dirichlet boundary conditions (Nitsche) to the NURBS miniapp.

-Data management and visualization
+Data management and Visualization
 ---------------------------------
 - Added support for ADIOS2 for parallel I/O with ParaView visualization. See
  Examples 5, 9, 12, 16. The classes adios2stream and ADIOS2DataCollection
@@ -1,66 +0,0 @@
-cff-version: 1.2.0
-message: "If you use MFEM, please cite it as follows."
-authors:
- family-names: "MFEM Team"
-title: "MFEM: Modular Finite Element Methods [Software]"
-doi: 10.11578/dc.20171025.1248
-url: "https://mfem.org"
-preferred-citation:
-  type: article
-  authors:
-  - family-names: "Anderson"
-    given-names: "Robert"
-    orcid: "https://orcid.org/0000-0002-3508-9944"
-  - family-names: "Andrej"
-    given-names: "Julian"
-    orcid: "https://orcid.org/0000-0001-7661-4840"
-  - family-names: "Barker"
-    given-names: "Andrew"
-    orcid: "https://orcid.org/0000-0003-3572-911X"
-  - family-names: "Bramwell"
-    given-names: "Jamie"
-  - family-names: "Camier"
-    given-names: "Jean-Sylvain"
-    orcid: "https://orcid.org/0000-0003-2421-1999"
-  - family-names: "Cerveny"
-    given-names: "Jakub"
-    orcid: "https://orcid.org/0000-0003-4231-2531"
-  - family-names: "Dobrev"
-    given-names: "Veselin"
-    orcid: "https://orcid.org/0000-0003-1793-5622"
-  - family-names: "Dudouit"
-    given-names: "Yohann"
-    orcid: "https://orcid.org/0000-0001-5831-561X"
-  - family-names: "Fisher"
-    given-names: "Aaron"
-  - family-names: "Kolev"
-    given-names: "Tzanio"
-    orcid: "https://orcid.org/0000-0002-2810-3090"
-  - family-names: "Pazner"
-    given-names: "Will"
-    orcid: "https://orcid.org/0000-0003-4885-2934"
-  - family-names: "Stowell"
-    given-names: "Mark"
-    orcid: "https://orcid.org/0000-0002-5389-7435"
-  - family-names: "Tomov"
-    given-names: "Vladimir"
-    orcid: "https://orcid.org/0000-0002-1846-6816"
-  - family-names: "Akkerman"
-    given-names: "Ido"
-    orcid: "https://orcid.org/0000-0002-5937-0300"
-  - family-names: "Dahm"
-    given-names: "Johann"
-    orcid: "https://orcid.org/0000-0001-9657-3564"
-  - family-names: "Medina"
-    given-names: "David"
-  - family-names: "Zampini"
-    given-names: "Stefano"
-    orcid: "https://orcid.org/0000-0002-0435-0433"
-  doi: "10.1016/j.camwa.2020.06.009"
-  journal: "Computers \\& Mathematics with Applications"
-  month: 1
-  start: 42 # First page number
-  end: 74 # Last page number
-  title: "MFEM: A Modular Finite Element Methods Library"
-  volume: 81
-  year: 2021
@@ -16,7 +16,7 @@ set(USER_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/config/user.cmake" CACHE PATH

 # Require C++11 and disable compiler-specific extensions
 set(CMAKE_CXX_STANDARD 11)
-if (MFEM_USE_GINKGO)
+if (MFEM_USE_GINKGO) 
  set(CMAKE_CXX_STANDARD 14)
 endif()
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -54,7 +54,7 @@ project(mfem NONE)
 # Current version of MFEM, see also `makefile`.
 #   mfem_VERSION = (string)
 #   MFEM_VERSION = (int)   [automatically derived from mfem_VERSION]
-set(${PROJECT_NAME}_VERSION 4.3.1)
+set(${PROJECT_NAME}_VERSION 4.2.1)

 # Prohibit in-source build
 if (${PROJECT_SOURCE_DIR} STREQUAL ${PROJECT_BINARY_DIR})
@@ -102,7 +102,7 @@ if (MFEM_USE_CUDA)
   endif()
   enable_language(CUDA)
   set(CMAKE_CUDA_STANDARD 11)
-   if (MFEM_USE_GINKGO)
+   if (MFEM_USE_GINKGO) 
     set(CMAKE_CUDA_STANDARD 14)
   endif()
   set(CMAKE_CUDA_STANDARD_REQUIRED ON)
@@ -246,7 +246,6 @@ if (MFEM_USE_OPENMP OR MFEM_USE_LEGACY_OPENMP)
    message(FATAL_ERROR " *** MFEM_USE_LEGACY_OPENMP requires MFEM_THREAD_SAFE=ON.")
  endif()
  find_package(OpenMP REQUIRED)
-  set(OPENMP_LIBRARIES ${OpenMP_CXX_LIBRARIES})
 endif()

 # SuiteSparse (before SUNDIALS which may depend on KLU)
@@ -331,10 +330,6 @@ if (MFEM_USE_CONDUIT)
    find_package(Conduit REQUIRED conduit relay blueprint )
 endif()

-if (MFEM_USE_FMS)
-    find_package(FMS REQUIRED fms )
-endif()
-
 # Axom/Sidre
 if (MFEM_USE_SIDRE)
  find_package(Axom REQUIRED Axom)
@@ -429,10 +424,9 @@ endif()
 #    integers, the METIS header (with 32-bit indices, as used by mfem) needs to
 #    be before SuiteSparse.
 set(MFEM_TPLS MPI_CXX OPENMP HYPRE BLAS LAPACK SuperLUDist METIS SuiteSparse SUNDIALS PETSC
-    SLEPC MESQUITE MUMPS STRUMPACK AXOM FMS CONDUIT Ginkgo GNUTLS GSLIB NETCDF
+    SLEPC MESQUITE MUMPS STRUMPACK AXOM CONDUIT Ginkgo GNUTLS GSLIB NETCDF
    MPFR PUMI HIOP POSIXCLOCKS MFEMBacktrace ZLIB OCCA CEED RAJA UMPIRE ADIOS2
    CUSPARSE MKL_CPARDISO AMGX CALIPER)
-
 # Add all *_FOUND libraries in the variable TPL_LIBRARIES.
 set(TPL_LIBRARIES "")
 set(TPL_INCLUDE_DIRS "")
@@ -451,9 +445,6 @@ include_directories(${TPL_INCLUDE_DIRS})
 if (OPENMP_FOUND)
  message(STATUS "MFEM: using package OpenMP")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
-  if (MFEM_USE_CUDA)
-    set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler=${OpenMP_CXX_FLAGS}")
-  endif()
 endif()

 message(STATUS "MFEM build type: CMAKE_BUILD_TYPE = ${CMAKE_BUILD_TYPE}")
@@ -4,9 +4,7 @@

 <p align="center">
 <a href="https://github.com/mfem/mfem/blob/master/LICENSE"><img alt="License" src="https://img.shields.io/badge/License-BSD-brightgreen.svg"></a>
-<a href="https://github.com/mfem/mfem/actions?query=workflow%3Arepo-check+branch%3Amaster"><img alt="Repo check" src="https://github.com/mfem/mfem/actions/workflows/repo-check.yml/badge.svg?branch=master"></a>
-<a href="https://github.com/mfem/mfem/actions?query=workflow%3Abuild-analysis+branch%3Amaster"><img alt="Build Analysis" src="https://github.com/mfem/mfem/actions/workflows/mfem-analysis.yml/badge.svg?branch=master"></a>
-<a href="https://github.com/mfem/mfem/actions?query=workflow%3Abuilds-and-tests+branch%3Amaster"><img alt="Builds and Tests" src="https://github.com/mfem/mfem/actions/workflows/builds-and-tests.yml/badge.svg?branch=master"></a>
+<a href="https://travis-ci.org/mfem/mfem"><img alt="Build Status" src="https://travis-ci.org/mfem/mfem.svg?branch=master"></a>
 <a href="https://ci.appveyor.com/project/mfem/mfem"><img alt="Build Status" src="https://ci.appveyor.com/api/projects/status/19non9sqm6msi2wy?svg=true"></a>
 <a href="https://mfem.github.io/doxygen/html/index.html"><img alt="Doxygen" src="https://img.shields.io/badge/code-documented-brightgreen.svg"></a>
 </p>
@@ -65,8 +63,6 @@ Origin](#developers-certificate-of-origin-11) at the end of this file.*
  development branches off `mfem:master`.
 - Please follow the [developer guidelines](#developer-guidelines), in particular
  with regards to documentation and code styling.
- Please do not commit large/binary files to the central repository (use a fork
-  instead).
 - Pull requests  should be issued toward `mfem:master`. Make sure
  to check the items off the [Pull Request Checklist](#pull-request-checklist).
 - When your contribution is fully working and ready to be reviewed, add
@@ -75,7 +71,6 @@ Origin](#developers-certificate-of-origin-11) at the end of this file.*
  reviewers to evaluate the changes.
 - The reviewers have 3 weeks to evaluate the PR and work with the author to
  fix issues and implement improvements.
- During review there should be no force pushes/rewriting history in the branch.
 - After approval, MFEM developers merge the PR manually in the [mfem:next branch](#masternext-workflow).
 - After a week of testing in `mfem:next`, the original PR is merged in `mfem:master`.
 - We use [milestones](https://github.com/mfem/mfem/milestones) to coordinate the
@@ -96,8 +91,8 @@ The MFEM source code has the following structure:
 ```
  .
  ├── config
-  │   ├── cmake
-  │   └── githooks
+  │   └── cmake
+  │       └── ...
  ├── data
  ├── doc
  ├── examples
@@ -134,10 +129,10 @@ The MFEM source code has the following structure:
  └── tests
      ├── convergence
      ├── gitlab
-      ├── mem_manager
      ├── par-mesh-format
      ├── scripts
      └── unit
+          └── ...
 ```

 #### Main directories and classes
@@ -368,10 +363,6 @@ Before you can start, you need a GitHub account, here are a few suggestions:
  two reviewers to evaluate the changes. The reviewers have 3 weeks to evaluate
  the PR and work with the author to implement improvements and fix issues.

- Once the `ready-for-review` label has been applied and reviewers have been
-  assigned, the PR is considered under review. To help with the review process
-  there should be no force pushes/rewriting history in the branch.
-
 - After approval, the PR is [tested](#masternext-workflow) for a week with
  other approved PRs in the `mfem:next` branch.

@@ -379,20 +370,16 @@ Before you can start, you need a GitHub account, here are a few suggestions:
  `mfem:next`, see the [README](tests/scripts/README) file in that directory
  for more details.

- Track the GitHub Actions and Appveyor [continuous integration](#automated-testing)
+- Track the Travis CI, Github Actions and Appveyor [continuous integration](#automated-testing)
  builds at the end of the PR. These should generally run clean, so address any
  errors as soon as possible. Please ask if you are unsure how to do that.

- Note that some tests, such as the `branch-history` check in GitHub Actions
-  are safeguards that are allowed to fail in certain cases.
+- Note that some tests, such as the `branch-history` check in Travis and Github
+  Actions are safeguards that are allowed to fail in certain cases.

 - Other tests, such as the `code-style`, `documentation` and `gitignore`
-  checks in GitHub Actions enforce MFEM-specific rules which are explained in
-  the error messages and the `tests/scripts` directory.
-
- Also note that the tests `branch-history` and `repos-checks` found in GitHub
-  Actions can be triggered automatically before each push using git hooks. See
-  the [git hooks README](config/githooks/README.md) for a detailed explanation.
+  checks in Travis and Github Actions enforce MFEM-specific rules which are
+  explained in the error messages and the `tests/scripts` directory.

 - If triggered, track the status of the LLNL GitLab tests. If failing, ask
  one of the _LLNL developers_ for details.
@@ -412,7 +399,7 @@ Before a PR can be merged, it should satisfy the following:
    - [ ] Does `make` or `cmake` have a new target?
    - [ ] Did the requirements or the installation process change? *(rare)*
 - [ ] Update continuous integration server configurations if necessary (e.g. with new version requirements for each of MFEM's dependencies)
-    - [ ] `.github`
+    - [ ] `.travis.yml`
    - [ ] `.appveyor.yml`
 - [ ] Update `.gitignore`:
    - [ ] Check if `make distclean; git status` shows any files that were generated from the source by the project (not an IDE) but we don't want to track in the repository.
@@ -529,7 +516,7 @@ MFEM uses a `master`/`next`-branch workflow as described below:
    - [ ] `doc/CodeDocumentation.conf.in`
 - [ ] Check that version requirements for each of MFEM's dependencies are documented in `INSTALL` and up-to-date
 - [ ] Check that continuous integration server configurations reflect the dependency version requirements of the new release
-    - [ ] `.github`
+    - [ ] `.travis.yml`
    - [ ] `.appveyor.yml`
 - [ ] Update the `CHANGELOG` to organize all release contributions
 - [ ] Review the whole source code once over
@@ -591,17 +578,14 @@ MFEM uses a `master`/`next`-branch workflow as described below:
 MFEM has several levels of automated testing running on GitHub, as well as on
 local Mac and Linux workstations, and Livermore Computing clusters at LLNL.

-In addition, developers can set local git hooks to run some quick checks on
-commit or push, see the [README](config/githooks/README.md) in the `config/githooks`
-directory.
-
 ### Linux and Mac smoke tests
-We use GitHub Actions to drive the default tests on the `master` and `next`
-branches. See the `.github/workflows` files and the logs at
-[https://github.com/mfem/mfem/actions](https://github.com/mfem/mfem/actions).
+We use Travis CI and Github Actions to drive the default tests on the `master`
+and `next` branches. See the `.travis` file and the logs at
+[https://travis-ci.org/mfem/mfem](https://travis-ci.org/mfem/mfem).

-Testing using GitHub Actions should be kept lightweight, as there is a time
-constraint on jobs. Two virtual machines are configured - Mac (OS X) and Linux.
+Testing using Travis CI and Github Actions should be kept lightweight, as there
+is a time constraint on jobs. Two virtual machines are configured - Mac (OS X)
+and Linux.

 - Tests on the `master` branch are triggered whenever a PR is issued on this branch.
 - Tests on the `next` branch are currently scheduled to run each night.
@@ -474,7 +474,7 @@ MFEM_USE_HIP = YES/NO
   Enables support for AMD devices in MFEM. HIP is a heterogeneous-compute
   interface for portability developed by AMD that can target both AMD and
   NVIDIA GPUs. The variable HIP_ARCH is used to specify the AMD GPU processor
-   used during compilation (by default, HIP_ARCH=gfx900). When enabled, this
+   used during compilation (by default, HIP_ARCH=gfx900).  When enabled, this
   option uses the HIP_* build options, see below.

 MFEM_USE_RAJA = YES/NO
@@ -516,13 +516,6 @@ MFEM_USE_CALIPER = YES/NO
   profiling at runtime with Caliper's configuration API. Alternatively, one
   can configure Caliper through environment variables or config files.

-MFEM_USE_FMS = YES/NO
-   Enables support for the FMS library which consists of the DataCollection
-   sub-class mfem::FMSDataCollection for I/O in FMS formats, see the header file
-   fem/fmsdatacollection.hpp. In addition, this option enables in-memory
-   convetion routines between FMS's FmsDataCollection structure and MFEM's
-   DataCollection class, see the header file fem/fmsconvert.hpp.
-
 MFEM_BUILD_TAG = (any value)
   An optional tag to characterize the build. Exported to config/config.mk.
   Can be used to identify the MFEM build from other makefiles.
@@ -547,9 +540,8 @@ The specific libraries and their options are:
  See also the "Specific options for hypre" section at the end of this file.
  URL: https://github.com/hypre-space/hypre and https://www.llnl.gov/casc/hypre
  Options: HYPRE_OPT, HYPRE_LIB.
-  Versions: HYPRE >= 2.10.0b  (HYPRE built without CUDA)
-            HYPRE >= 2.20.0   (HYPRE built with '--enable-mixedint')
-            HYPRE >= 2.22.1   (HYPRE built with CUDA)
+  Versions: HYPRE >= 2.10.0b,
+            HYPRE >= 2.20.0 for '--enable-mixedint' support.

 - METIS, used when MFEM_USE_METIS = YES. If using METIS 5, set
  MFEM_USE_METIS_5 = YES (default is to use METIS 4).
@@ -623,7 +615,7 @@ The specific libraries and their options are:
  and dependencies of specific modules, see the Ginkgo webpage below.
  URL: https://ginkgo-project.github.io
  Options: GINKGO_OPT, GINKGO_LIB, GINKGO_DIR, GINKGO_BUILD_TYPE (Release or Debug).
-  Versions: Ginkgo >= 1.4.0.
+  Versions: Ginkgo >= 1.4.0. 

 - AmgX (optional), used when MFEM_USE_AMGX = YES.
  URL: https://github.com/NVIDIA/AMGX
@@ -761,11 +753,6 @@ The specific libraries and their options are:
  URL: https://zlib.net
  Options: ZLIB_OPT, ZLIB_LIB.

- FMS (optional), used when MFEM_USE_FMS = YES.
-  URL: https://github.com/CEED/FMS
-  Options: FMS_OPT, FMS_LIB.
-  Versions: FMS >= 0.2.
-
 Building with CMake
 ===================
 The MFEM build system consists of two steps: configuration and compilation.
@@ -897,7 +884,6 @@ MFEM_USE_RAJA
 MFEM_USE_UMPIRE
 MFEM_USE_SIDRE
 MFEM_USE_CALIPER
-MFEM_USE_FMS

 The following options are CMake specific:

@@ -952,7 +938,6 @@ The CMake build system adds auto-detection for the following packages/libraries:
 - UMPIRE
 - AXOM - Used when MFEM_USE_SIDRE is enabled
 - CALIPER
- - FMS

 The following built-in CMake packages are also used:

@@ -970,7 +955,7 @@ config/config.hpp.in:

   cp config/config.hpp.in config/_config.hpp

-The file config/_config.hpp can then be edited to enable desired options. The
+The file config/_config.hpp can then be edited to enable desired options.  The
 MFEM library is simply a combination of all object files obtained by compiling
 the .cpp source files in the source directories: general, linalg, mesh, and fem.

@@ -978,7 +963,7 @@ the .cpp source files in the source directories: general, linalg, mesh, and fem.
 Specifying an MPI job launcher
 ==============================
 By default, MFEM will use 'mpirun -np #' to launch any of its parallel tests or
-miniapps, where # is the number of MPI tasks. An alternate MPI launcher can be
+miniapps, where # is the number of MPI tasks.  An alternate MPI launcher can be
 provided by setting the MFEM_MPIEXEC and MFEM_MPIEXEC_NP config variables.

 MFEM will expect the launcher command, plus the command line option to allow it
@@ -256,10 +256,6 @@ IF (DEFINED TPL_ENABLE_SIDRE)
  SET(MFEM_USE_SIDRE ${TPL_ENABLE_SIDRE} CACHE BOOL "Enable Axom/Sidre usage" FORCE)
 ENDIF()

-IF (DEFINED TPL_ENABLE_FMS)
-  SET(MFEM_USE_FMS ${TPL_ENABLE_FMS} CACHE BOOL "Enable FMS usage" FORCE)
-ENDIF()
-
 IF (DEFINED TPL_ENABLE_CONDUIT)
  SET(MFEM_USE_CONDUIT ${TPL_ENABLE_CONDUIT} CACHE BOOL "Enable Conduit usage" FORCE)
 ENDIF()
@@ -44,7 +44,6 @@ set(MFEM_USE_PETSC @MFEM_USE_PETSC@)
 set(MFEM_USE_SLEPC @MFEM_USE_SLEPC@)
 set(MFEM_USE_MPFR @MFEM_USE_MPFR@)
 set(MFEM_USE_SIDRE @MFEM_USE_SIDRE@)
-set(MFEM_USE_FMS @MFEM_USE_FMS@)
 set(MFEM_USE_CONDUIT @MFEM_USE_CONDUIT@)
 set(MFEM_USE_PUMI @MFEM_USE_PUMI@)
 set(MFEM_USE_CUDA @MFEM_USE_CUDA@)
@@ -119,9 +119,6 @@
 // Enable the use of SIMD in the high performance templated classes
 #cmakedefine MFEM_USE_SIMD

-// Enable MFEM functionality based on the FMS library
-#cmakedefine MFEM_USE_FMS
-
 // Enable MFEM functionality based on Conduit
 #cmakedefine MFEM_USE_CONDUIT

@@ -1,20 +0,0 @@
-# Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-# LICENSE and NOTICE for details. LLNL-CODE-806117.
-#
-# This file is part of the MFEM library. For more information and source code
-# availability visit https://mfem.org.
-#
-# MFEM is free software; you can redistribute it and/or modify it under the
-# terms of the BSD-3 license. We welcome feedback and contributions, see file
-# CONTRIBUTING.md for details.
-
-# Defines the following variables:
-#   - FMS_FOUND
-#   - FMS_LIBRARIES
-#   - FMS_INCLUDE_DIRS
-
-include(MfemCmakeUtilities)
-mfem_find_package(FMS FMS FMS_DIR
-  "include" fms.h "lib" fms
-  "Paths to headers required by FMS." "Libraries required by FMS.")
@@ -91,12 +91,6 @@
 // Enable MFEM functionality based on the SuiteSparse library.
 // #define MFEM_USE_SUITESPARSE

-// Enable MFEM functionality based on the ARPACK library.
-// #define MFEM_USE_ARPACK
-
-// Enable MFEM functionality based on the SPECTRA library.
-// #define MFEM_USE_SPECTRA
-
 // Enable MFEM functionality based on the SuperLU library.
 // #define MFEM_USE_SUPERLU
 // #define MFEM_USE_SUPERLU5
@@ -123,9 +117,6 @@
 // Enable the use of SIMD in the high performance templated classes
 // #define MFEM_USE_SIMD

-// Enable FMS support
-// #define MFEM_USE_FMS
-
 // Enable Conduit support
 // #define MFEM_USE_CONDUIT

@@ -31,8 +31,6 @@ MFEM_TIMER_TYPE        = @MFEM_TIMER_TYPE@
 MFEM_USE_SUNDIALS      = @MFEM_USE_SUNDIALS@
 MFEM_USE_MESQUITE      = @MFEM_USE_MESQUITE@
 MFEM_USE_SUITESPARSE   = @MFEM_USE_SUITESPARSE@
-MFEM_USE_ARPACK        = @MFEM_USE_ARPACK@
-MFEM_USE_SPECTRA       = @MFEM_USE_SPECTRA@
 MFEM_USE_SUPERLU       = @MFEM_USE_SUPERLU@
 MFEM_USE_SUPERLU5      = @MFEM_USE_SUPERLU5@
 MFEM_USE_MUMPS         = @MFEM_USE_MUMPS@
@@ -45,7 +43,6 @@ MFEM_USE_PETSC         = @MFEM_USE_PETSC@
 MFEM_USE_SLEPC         = @MFEM_USE_SLEPC@
 MFEM_USE_MPFR          = @MFEM_USE_MPFR@
 MFEM_USE_SIDRE         = @MFEM_USE_SIDRE@
-MFEM_USE_FMS           = @MFEM_USE_FMS@
 MFEM_USE_CONDUIT       = @MFEM_USE_CONDUIT@
 MFEM_USE_PUMI          = @MFEM_USE_PUMI@
 MFEM_USE_HIOP          = @MFEM_USE_HIOP@
@@ -45,7 +45,6 @@ option(MFEM_USE_PETSC "Enable PETSc support." OFF)
 option(MFEM_USE_SLEPC "Enable SLEPc support." OFF)
 option(MFEM_USE_MPFR "Enable MPFR usage." OFF)
 option(MFEM_USE_SIDRE "Enable Axom/Sidre usage" OFF)
-option(MFEM_USE_FMS "Enable FMS usage" OFF)
 option(MFEM_USE_CONDUIT "Enable Conduit usage" OFF)
 option(MFEM_USE_PUMI "Enable PUMI" OFF)
 option(MFEM_USE_HIOP "Enable HiOp" OFF)
@@ -97,11 +96,6 @@ set(HYPRE_DIR "${MFEM_DIR}/../hypre/src/hypre" CACHE PATH
 # If hypre was compiled to depend on BLAS and LAPACK:
 # set(HYPRE_REQUIRED_PACKAGES "BLAS" "LAPACK" CACHE STRING
 #     "Packages that HYPRE depends on.")
-if (MFEM_USE_CUDA)
-   # This is only necessary when hypre is built with cuda:
-   set(HYPRE_REQUIRED_LIBRARIES "-lcusparse" "-lcurand" CACHE STRING
-       "Libraries that HYPRE depends on.")
-endif()

 set(METIS_DIR "${MFEM_DIR}/../metis-4.0" CACHE PATH "Path to the METIS library.")

@@ -138,10 +132,10 @@ set(MUMPS_DIR "${MFEM_DIR}/../MUMPS_5.2.0" CACHE PATH
    "Path to the MUMPS library.")
 # Packages required by MUMPS, depending on how it was compiled.
 set(MUMPS_REQUIRED_PACKAGES "MPI" "BLAS" "METIS" "ScaLAPACK" CACHE STRING
-    "Additional packages required by MUMPS.")
+    "Additional packages required by MUMPS.")    
 # If the MPI package does not find all required Fortran libraries:
 # set(MUMPS_REQUIRED_LIBRARIES "gfortran" "mpi_mpifh" CACHE STRING
-#     "Additional libraries required by MUMPS.")
+#     "Additional libraries required by MUMPS.")    

 set(STRUMPACK_DIR "${MFEM_DIR}/../STRUMPACK-build" CACHE PATH
    "Path to the STRUMPACK library.")
@@ -193,12 +187,6 @@ set(SLEPC_ARCH "arch-linux2-c-debug" CACHE STRING "SLEPC build architecture.")

 set(MPFR_DIR "" CACHE PATH "Path to the MPFR library.")

-set(FMS_DIR "${MFEM_DIR}/../fms" CACHE PATH
-    "Path to the FMS library.")
-# If FMS is built with Conduit:
-# set(FMS_REQUIRED_PACKAGES "Conduit/relay" CACHE STRING
-#     "Additional packages required by FMS.")
-
 set(CONDUIT_DIR "${MFEM_DIR}/../conduit" CACHE PATH
    "Path to the Conduit library.")

@@ -136,7 +136,6 @@ MFEM_USE_PETSC         = NO
 MFEM_USE_SLEPC         = NO
 MFEM_USE_MPFR          = NO
 MFEM_USE_SIDRE         = NO
-MFEM_USE_FMS           = NO
 MFEM_USE_CONDUIT       = NO
 MFEM_USE_PUMI          = NO
 MFEM_USE_HIOP          = NO
@@ -151,8 +150,6 @@ MFEM_USE_UMPIRE        = NO
 MFEM_USE_SIMD          = NO
 MFEM_USE_ADIOS2        = NO
 MFEM_USE_MKL_CPARDISO  = NO
-MFEM_USE_ARPACK        = NO
-MFEM_USE_SPECTRA       = NO

 # MPI library compile and link flags
 # These settings are used only when building MFEM with MPI + HIP
@@ -177,10 +174,6 @@ LIBUNWIND_LIB = $(if $(NOTMAC),-lunwind -ldl,)
 HYPRE_DIR = @MFEM_DIR@/../hypre/src/hypre
 HYPRE_OPT = -I$(HYPRE_DIR)/include
 HYPRE_LIB = -L$(HYPRE_DIR)/lib -lHYPRE
-ifeq (YES,$(MFEM_USE_CUDA))
-   # This is only necessary when hypre is built with cuda:
-   HYPRE_LIB += -lcusparse -lcurand
-endif

 # METIS library configuration
 ifeq ($(MFEM_USE_SUPERLU)$(MFEM_USE_STRUMPACK)$(MFEM_USE_MUMPS),NONONO)
@@ -330,19 +323,6 @@ NETCDF_LIB = $(XLINKER)-rpath,$(NETCDF_DIR)/lib -L$(NETCDF_DIR)/lib\
 $(XLINKER)-rpath,$(HDF5_DIR)/lib -L$(HDF5_DIR)/lib\
 -lnetcdf -lhdf5_hl -lhdf5 $(ZLIB_LIB)

-# ARPACK library configuration
-ARPACK_DIR = @MFEM_DIR@/../ARPACK
-ARPACK_OPT = -I$(ARPACK_DIR)
-ARPACK_LIB = -L$(ARPACK_DIR) -lparpack -larpack
-
-# EIGEN library configuration
-EIGEN_DIR = @MFEM_DIR@/../eigen
-EIGEN_OPT = -I$(EIGEN_DIR)
-
-# SPECTRA library configuration
-SPECTRA_DIR = @MFEM_DIR@/../spectra/include
-SPECTRA_OPT = -I$(SPECTRA_DIR) $(EIGEN_OPT)
-
 # PETSc library configuration (version greater or equal to 3.8 or the dev branch)
 PETSC_ARCH := arch-linux2-c-debug
 PETSC_DIR  := $(MFEM_DIR)/../petsc/$(PETSC_ARCH)
@@ -377,11 +357,6 @@ endif
 MPFR_OPT =
 MPFR_LIB = -lmpfr

-# FMS and required libraries configuration
-FMS_DIR = $(MFEM_DIR)/../fms
-FMS_OPT = -I$(FMS_DIR)/include
-FMS_LIB = -Wl,-rpath,$(FMS_DIR)/lib -L$(FMS_DIR)/lib -lfms
-
 # Conduit and required libraries configuration
 CONDUIT_DIR = @MFEM_DIR@/../conduit
 CONDUIT_OPT = -I$(CONDUIT_DIR)/include/conduit
@@ -1,41 +0,0 @@
-                    Finite Element Discretization Library
-                                   __
-                       _ __ ___   / _|  ___  _ __ ___
-                      | '_ ` _ \ | |_  / _ \| '_ ` _ \
-                      | | | | | ||  _||  __/| | | | | |
-                      |_| |_| |_||_|   \___||_| |_| |_|
-
-                               https://mfem.org
-
-
-This directory contains recommended git hooks, which are scripts that can be
-used to improve your development experience with MFEM:
-
-### The hooks
-
-* `pre-commit` is a hook that will be applied before each commit and run
-`astyle` on the code. This will ensure that your changes comply with the MFEM
-code styling guidelines.
-
-* `pre-push` is a hook that will be applied before each push to run a quick set
-of tests that verify that your files headers are in compliance, and that you did
-not add any large files to the repo.
-
-### Setup
-
-To setup the git hooks, run `make hooks`, which creates symlinks to the hooks in
-the `.git/hooks` directory. Individual hooks can be enabled by manually creating
-symlinks.
-
-(You may also copy the scripts directly and customize them further, but this way
-you may miss additional updates in the future.)
-
-### Failures
-
-The `branch-history` check can fail in some cases when the history is OK. For
-example, when a large number of files were modified for a legitimate reason, or
-when a picture was added for documentation.
-
-If that is the case, make sure the failure is indeed justified, and rerun the
-push command with the `--no-verify` option. This will skip the hooks, allowing
-you to push those changes.
@@ -1,4 +0,0 @@
-#!/bin/sh
-
-# Apply automated code formatting
-make -C $(git rev-parse --show-toplevel) style
@@ -1,107 +0,0 @@
-#!/bin/bash
-
-# Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-# LICENSE and NOTICE for details. LLNL-CODE-806117.
-#
-# This file is part of the MFEM library. For more information and source code
-# availability visit https://mfem.org.
-#
-# MFEM is free software; you can redistribute it and/or modify it under the
-# terms of the BSD-3 license. We welcome feedback and contributions, see file
-# CONTRIBUTING.md for details.
-
-option=${1:-""}
-
-if [[ "${option}" == "--help" ]]; then
-  echo "This script runs checks on the repository."
-  echo "It has 2 modes: with and without an option."
-  echo ""
-  echo "Options are used in GitHub Actions and can be:"
-  echo "  --copyright"
-  echo "  --license"
-  echo "  --release"
-  echo "  --style"
-  echo "  --history"
-  echo ""
-  echo "As a githook, the script is used without options."
-  echo "In that case, it will run all the checks except style."
-  echo ""
-  echo "Use --help to print this help message."
-fi
-
-cd $(git rev-parse --show-toplevel)
-
-# copyright check
-copyright=true
-if [[ "${option}" == "--copyright" || "${option}" == "" ]]; then
-  if git grep -l "^\(#\|//\).*\(\-2020\|\ 2010,\)" > matches.txt; then
-    echo "Please update the following files to Copyright (c) 2010-2021:"
-    cat matches.txt
-    copyright=false
-  fi
-fi
-
-# license check
-license=true
-if [[ "${option}" == "--license" || "${option}" == "" ]]; then
-  if git grep -li "^\(#\|//\).*GNU\ Lesser\ General\ Public\ License" > matches.txt; then
-    echo "Please update the following files to the BSD-3 license:"
-    cat matches.txt
-    license=false
-  fi
-fi
-
-# release check
-release=true
-if [[ "${option}" == "--release" || "${option}" == "" ]]; then
-  if git grep -l "^\(#\|//\).*LLNL\-CODE\-443211" > matches.txt
-  then
-    echo "Please update the following files to LLNL-CODE-806117:"
-    cat matches.txt
-    release=false
-  fi
-fi
-
-# wrap-up
-code=0
-if ! $copyright ; then
-  echo "copyright check failed, unroll log for details"
-  code=1
-fi
-if ! $license ; then
-  echo "license check failed, unroll log for details"
-  code=1
-fi
-if ! $release ; then
-  echo "release check failed, unroll log for details"
-  code=1
-fi
-
-# `code-style` is not just a check, it will actually reformat the code if
-# necessary. This means that if one pushes while the repo is in dirty state
-# (changes not staged), those changes may be mixed with format changes.
-# To activate this, you will need to hard-copy this hook script in the hook
-# directory and uncomment only then. (See README.md)
-#
-## style check
-#if [[ "${option}" == "--style" || "${option}" == "" ]]; then
-if [[ "${option}" == "--style" ]]; then
-  if which astyle && [[ "$(astyle --version)" == "Artistic Style Version 2.05.1" ]]; then
-    cd tests/scripts
-    if ! ./runtest code-style; then code=1; fi
-    cd -
-  else
-    echo "Warning: astyle not found or version is not 2.05.1"
-  fi
-fi
-
-# branch-history
-if [[ "${option}" == "--history" || "${option}" == "" ]]; then
-  git fetch origin master:master
-  cd tests/scripts
-  if ! ./runtest branch-history; then code=1; fi
-  cd -
-fi
-
-exit $code
@@ -57,27 +57,22 @@ TIMECMD := $(word 1,$(TIMECMD))
 ifneq (,$(filter test%,$(MAKECMDGOALS)))
   MAKEFLAGS += -k
 endif
-# Test runs of the examples/miniapps with parameters - check exit code:
-# 0 means success, 255 means the test was skipped, anything else means error
+# Test runs of the examples/miniapps with parameters - check exit code
 mfem-test = \
   printf "   $(3) [$(2) $(1) ... ]: "; \
   $(call $(TIMEFUN),$(TIMECMD),$(2) ./$(1) $(if $(5),,-no-vis )$(4) \
     > $(1).stderr 2>&1); \
-   err="$$3"; \
-   if [ "$$3" = 0 ]; then $(PRINT_OK); \
-   else if [ "$$3" = 255 ]; then $(PRINT_SKIP); err=0; \
-   else $(PRINT_FAILED); cat $(1).stderr; fi; fi; \
-   rm -f $(1).stderr; exit $$err
+   if [ "$$3" = 0 ]; \
+   then $(PRINT_OK); else $(PRINT_FAILED); cat $(1).stderr; fi; \
+   rm -f $(1).stderr; exit $$3

 # Test runs of the examples/miniapps - check exit code and if a file exists
-# See mfem-test for the interpretation of the error code
 mfem-test-file = \
   printf "   $(3) [$(2) $(1) ... ]: "; \
   $(call $(TIMEFUN),$(TIMECMD),$(2) ./$(1) -no-vis > $(1).stderr 2>&1); \
   err="$$3"; \
-   if [ "$$3" = 0 ] && [ -e $(4) ]; then $(PRINT_OK); \
-   else if [ "$$3" = 255 ] && [ -e $(4) ]; then $(PRINT_SKIP); err=0; \
-   else $(PRINT_FAILED); cat $(1).stderr; err=64; fi; fi; \
+   if [ "$$3" = 0 ] && [ -e $(4) ]; \
+   then $(PRINT_OK); else $(PRINT_FAILED); cat $(1).stderr; err=64; fi; \
   rm -f $(1).stderr; exit $$err

 .PHONY: test test-par-YES test-par-NO test-ser test-par test-clean test-print
@@ -85,26 +80,6 @@ mfem-test-file = \
 # What sets of tests to run in serial and parallel
 test-par-YES: $(PAR_$(MFEM_TESTS):=-test-par) $(SEQ_$(MFEM_TESTS):=-test-seq)
 test-par-NO:  $(SEQ_$(MFEM_TESTS):=-test-seq)
-ifeq ($(MFEM_USE_CUDA),YES)
-.PHONY: test-par-YES-cuda test-par-NO-cuda test-ser-cuda test-par-cuda test-cuda
-test-par-YES: test-par-YES-cuda
-test-par-NO:  test-par-NO-cuda
-test-par-YES-cuda: test-par-cuda test-ser-cuda
-test-par-NO-cuda:  test-ser-cuda
-test-ser-cuda: $(SEQ_DEVICE_$(MFEM_TESTS):=-test-seq-cuda)
-test-par-cuda: $(PAR_DEVICE_$(MFEM_TESTS):=-test-par-cuda)
-test-cuda: test-par-$(MFEM_USE_MPI)-cuda clean-exec
-endif
-ifeq ($(MFEM_USE_HIP),YES)
-.PHONY: test-par-YES-hip test-par-NO-hip test-ser-hip test-par-hip test-hip
-test-par-YES: test-par-YES-hip
-test-par-NO:  test-par-NO-hip
-test-par-YES-hip: test-par-hip test-ser-hip
-test-par-NO-hip:  test-ser-hip
-test-ser-hip: $(SEQ_DEVICE_$(MFEM_TESTS):=-test-seq-hip)
-test-par-hip: $(PAR_DEVICE_$(MFEM_TESTS):=-test-par-hip)
-test-hip: test-par-$(MFEM_USE_MPI)-hip clean-exec
-endif
 test-ser:     test-par-NO
 test-par:     test-par-YES
 test:         all test-par-$(MFEM_USE_MPI) clean-exec
@@ -1,9 +0,0 @@
-MFEM INLINE mesh v1.0
-
-type = pyramid
-nx = 4
-ny = 4
-nz = 4
-sx = 1.0
-sy = 1.0
-sz = 1.0
@@ -1,43 +0,0 @@
-MFEM mesh v1.0
-
-#
-# MFEM Geometry Types (see mesh/geom.hpp):
-#
-# POINT       = 0
-# SEGMENT     = 1
-# TRIANGLE    = 2
-# SQUARE      = 3
-# TETRAHEDRON = 4
-# CUBE        = 5
-# PRISM       = 6
-# PYRAMID     = 7
-#
-
-dimension
-3
-
-elements
-2
-1 7 4 3 2 1 0
-1 7 1 2 3 4 5
-
-boundary
-8
-1 2 0 2 1
-2 2 0 3 2
-3 2 0 4 3
-4 2 0 1 4
-5 2 1 2 5
-6 2 2 3 5
-7 2 3 4 5
-8 2 4 1 5
-
-vertices
-6
-3
-0 0 -1
-1 0 0
-0 1 0
-1 0 0
-0 -1 0
-0 0 1
@@ -1,38 +0,0 @@
-MFEM mesh v1.0
-
-#
-# MFEM Geometry Types (see mesh/geom.hpp):
-#
-# POINT       = 0
-# SEGMENT     = 1
-# TRIANGLE    = 2
-# SQUARE      = 3
-# TETRAHEDRON = 4
-# CUBE        = 5
-# PRISM       = 6
-# PYRAMID     = 7
-#
-
-dimension
-3
-
-elements
-1
-1 7 0 1 2 3 4
-
-boundary
-5
-1 3 3 2 1 0
-2 2 0 1 4
-3 2 1 2 4
-4 2 2 3 4
-5 2 3 0 4
-
-vertices
-5
-3
-0 0 0
-1 0 0
-1 1 0
-0 1 0
-0 0 1
@@ -1,47 +0,0 @@
-Mesh.Algorithm = 6;
-
-lc = 0.1;
-Point(1) = {0.0,0.0,0.0,lc};
-Point(2) = {1,0.0,0.0,lc};
-Point(3) = {0,1,0.0,lc};
-Circle(1) = {2,1,3};
-Point(4) = {-1,0,0.0,lc};
-Point(5) = {0,-1,0.0,lc};
-Circle(2) = {3,1,4};
-Circle(3) = {4,1,5};
-Circle(4) = {5,1,2};
-Point(6) = {0,0,-1,lc};
-Point(7) = {0,0,1,lc};
-Circle(5) = {3,1,6};
-Circle(6) = {6,1,5};
-Circle(7) = {5,1,7};
-Circle(8) = {7,1,3};
-Circle(9) = {2,1,7};
-Circle(10) = {7,1,4};
-Circle(11) = {4,1,6};
-Circle(12) = {6,1,2};
-Curve Loop(13) = {2,8,-10};
-Surface(14) = {13};
-Curve Loop(15) = {10,3,7};
-Surface(16) = {15};
-Curve Loop(17) = {-8,-9,1};
-Surface(18) = {17};
-Curve Loop(19) = {-11,-2,5};
-Surface(20) = {19};
-Curve Loop(21) = {-5,-12,-1};
-Surface(22) = {21};
-Curve Loop(23) = {-3,11,6};
-Surface(24) = {23};
-Curve Loop(25) = {-7,4,9};
-Surface(26) = {25};
-Curve Loop(27) = {-4,12,-6};
-Surface(28) = {27};
-Surface Loop(29) = {28,26,16,14,20,24,22,18};
-Volume(30) = {29};
-
-Physical Surface(1) = {28,26,16,14,20,24,22,18};
-Physical Volume(2) = 30;
-
-// Generate 2D mesh
-Mesh 2;
-Mesh.MshFileVersion = 2.2;
@@ -1,246 +0,0 @@
-FMS: 100
-DataCollection/Name: star
-DataCollection/NumberOfFieldDescriptors: 1
-DataCollection/FieldDescriptors/0/Name: CoordsDescriptor
-DataCollection/FieldDescriptors/0/ComponentName: volume
-DataCollection/FieldDescriptors/0/Type: 0
-DataCollection/FieldDescriptors/0/FixedOrder/Size: 3
-DataCollection/FieldDescriptors/0/FixedOrder/Type: FMS_UINT64
-DataCollection/FieldDescriptors/0/FixedOrder/Values: [0, 1, 3]
-DataCollection/FieldDescriptors/0/NumDofs: 211
-DataCollection/NumberOfFields: 1
-DataCollection/Fields/0/Name: Coords
-DataCollection/Fields/0/LayoutType: 0
-DataCollection/Fields/0/NumberOfVectorComponents: 2
-DataCollection/Fields/0/FieldDescriptorName: CoordsDescriptor
-DataCollection/Fields/0/Data/Size: 422
-DataCollection/Fields/0/Data/Type: FMS_DOUBLE
-DataCollection/Fields/0/Data/Values: [-0.016886, 1.000000, 0.309017, 
-1.309020, -0.809017, -0.500000, 
-0.809017, -1.618030, 0.309017, 
-0.500000, 1.309020, 0.519420, 
-1.154510, 0.809019, 0.147680, 
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-DataCollection/Mesh/PartitionInfo/Size: 2
-DataCollection/Mesh/PartitionInfo/Type: FMS_UINT64
-DataCollection/Mesh/PartitionInfo/Values: [0, 1]
-DataCollection/Mesh/NumDomainNames: 1
-DataCollection/Mesh/NumComponents: 1
-DataCollection/Mesh/NumTags: 0
-DataCollection/Mesh/DomainNames/0/Name: Domain
-DataCollection/Mesh/DomainNames/0/NumDomains: 1
-DataCollection/Mesh/DomainNames/0/Domains/0/Dimension: 2
-DataCollection/Mesh/DomainNames/0/Domains/0/NumVertices: 31
-DataCollection/Mesh/DomainNames/0/Domains/0/Entities/0/EntityType: FMS_EDGE
-DataCollection/Mesh/DomainNames/0/Domains/0/Entities/0/NumEntities: 50
-DataCollection/Mesh/DomainNames/0/Domains/0/Entities/0/Size: 100
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-8, 24, 8, 
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-DataCollection/Mesh/DomainNames/0/Domains/0/Entities/1/Size: 80
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-DataCollection/Mesh/Components/0/Name: volume
-DataCollection/Mesh/Components/0/Dimension: 2
-DataCollection/Mesh/Components/0/NumEntities: 20
-DataCollection/Mesh/Components/0/Coordinates: Coords
-DataCollection/Mesh/Components/0/NumParts: 1
-DataCollection/Mesh/Components/0/Parts/0/DomainName: Domain
-DataCollection/Mesh/Components/0/Parts/0/DomainID: 0
-DataCollection/Mesh/Components/0/Parts/0/FullDomain: Yes
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@@ -38,7 +38,7 @@ PROJECT_NAME           = "MFEM"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.

-PROJECT_NUMBER         = v4.3.1
+PROJECT_NUMBER         = v4.2.1

 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -84,9 +84,8 @@ foreach(SRC_FILE ${ALL_EXE_SRCS})
  get_filename_component(SRC_FILENAME ${SRC_FILE} NAME)
  string(REPLACE ".cpp" "" TEST_NAME ${SRC_FILENAME})

-  set(THIS_TEST_OPTIONS "-no-vis")
-  if (${TEST_NAME} MATCHES "ex0p?")
-    set(THIS_TEST_OPTIONS)
+  if (NOT (${TEST_NAME} MATCHES "ex0p?"))
+    set(THIS_TEST_OPTIONS "-no-vis")
  endif()
  if (${TEST_NAME} MATCHES "ex10p*")
    list(APPEND THIS_TEST_OPTIONS "-tf" "5")
@@ -108,34 +107,6 @@ foreach(SRC_FILE ${ALL_EXE_SRCS})
  endif()
 endforeach()

-# Add CUDA/HIP tests.
-set(DEVICE_EXAMPLES
-    # serial examples with device support:
-    ex1 ex3 ex4 ex5 ex6 ex9 ex22 ex24 ex25 ex26
-    # parallel examples with device support:
-    ex1p ex2p ex3p ex4p ex5p ex6p ex7p ex9p ex13p ex22p ex24p ex25p ex26p)
-set(MFEM_TEST_DEVICE)
-if (MFEM_USE_CUDA)
-  set(MFEM_TEST_DEVICE "cuda")
-elseif (MFEM_USE_HIP)
-  set(MFEM_TEST_DEVICE "hip")
-endif()
-if (MFEM_TEST_DEVICE)
-  foreach(TEST_NAME ${DEVICE_EXAMPLES})
-    set(THIS_TEST_OPTIONS "-no-vis" "-d" "${MFEM_TEST_DEVICE}")
-    if (NOT (${TEST_NAME} MATCHES ".*p$"))
-      add_test(NAME ${TEST_NAME}_${MFEM_TEST_DEVICE}_ser
-        COMMAND ${TEST_NAME} ${THIS_TEST_OPTIONS})
-    elseif (MFEM_USE_MPI)
-      add_test(NAME ${TEST_NAME}_${MFEM_TEST_DEVICE}_np=${MFEM_MPI_NP}
-        COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} ${MFEM_MPI_NP}
-        ${MPIEXEC_PREFLAGS}
-        $<TARGET_FILE:${TEST_NAME}> ${THIS_TEST_OPTIONS}
-        ${MPIEXEC_POSTFLAGS})
-    endif()
-  endforeach()
-endif()
-
 # If STRUMPACK is enabled, add a test run that uses it.
 if (MFEM_USE_STRUMPACK)
  add_test(NAME ex11p_strumpack_np=${MFEM_MPI_NP}
@@ -12,30 +12,50 @@
 # Use the MFEM build directory
 MFEM_DIR ?= ../..
 MFEM_BUILD_DIR ?= ../..
+SRC = $(if $(MFEM_DIR:../..=),$(MFEM_DIR)/examples/MeshPart/,)
 CONFIG_MK = $(MFEM_BUILD_DIR)/config/config.mk

-TESTS = dangling-aliases
-
 MFEM_LIB_FILE = mfem_is_not_built
 -include $(CONFIG_MK)

+SEQ_EXAMPLES = test_mesh_partition
+PAR_EXAMPLES =
+ifeq ($(MFEM_USE_MPI),NO)
+   EXAMPLES = $(SEQ_EXAMPLES)
+else
+   EXAMPLES = $(PAR_EXAMPLES) $(SEQ_EXAMPLES)
+endif
+
 .SUFFIXES:
-.SUFFIXES: .o .cpp
+.SUFFIXES: .o .cpp .mk
 .PHONY: all clean
+.PRECIOUS: %.o

-# Remove built-in rule
+COMMON_O= mesh_partition.o
+
+# Remove built-in rules
 %: %.cpp
+%.o: %.cpp

-# Replace the default implicit rule for *.cpp files
-%: $(SRC)%.cpp $(MFEM_LIB_FILE) $(CONFIG_MK)
-	$(MFEM_CXX) $(MFEM_FLAGS) $< -o $@ $(MFEM_LIBS)
+all: $(EXAMPLES)

-all: $(TESTS)
+# Rules for building the EXAMPLES
+
+%: $(SRC)%.cpp $(COMMON_O) $(MFEM_LIB_FILE) $(CONFIG_MK)
+	$(MFEM_CXX) $(MFEM_FLAGS) $< -o $@ $(COMMON_O) $(MFEM_LIBS)
+
+# Rules for compiling miniapp dependencies
+$(COMMON_O) $($(EXAMPLES)): \
+%.o: $(SRC)%.cpp $(SRC)%.hpp $(CONFIG_MK)
+	$(MFEM_CXX) $(MFEM_FLAGS) -c $(<) -o $(@)

 # Generate an error message if the MFEM library is not built and exit
 $(MFEM_LIB_FILE):
 	$(error The MFEM library is not built)

 clean:
-	rm -f *.o *~ $(TESTS)
+	rm -f *.o *~ $(SEQ_EXAMPLES) $(PAR_EXAMPLES)
 	rm -rf *.dSYM *.TVD.*breakpoints
+	rm output/*
+
+
@@ -0,0 +1,301 @@
+
+#include "mesh_partition.hpp"
+
+
+Subdomain::Subdomain(const Mesh & mesh0_) 
+: mesh0(&mesh0_), dim(mesh0->Dimension()), sdim(mesh0->SpaceDimension()) 
+{ 
+   // MFEM_VERIFY(dim == 3, "Only 3D domains for now are supported");
+   if(mesh0->NURBSext)
+   {
+      MFEM_ABORT("Nurbs meshes are not supported yet");
+   }
+}
+
+void Subdomain::BuildSubMesh(const Array<int> & elems, const entity_type & etype)
+{
+   // if mesh nodes are defined we use them for the vertices
+   // otherwise we use the vertices them selfs
+   cout << "entity type " << etype << endl;
+
+   int nv = mesh0->GetNV();
+   int subelems = elems.Size();
+   Array<int> vmarker(nv); vmarker = 0;
+   int numvertices = 0;
+   for (int ie = 0; ie<subelems; ie++)
+   {
+      int el = elems[ie];
+      Array<int> vertices;
+      switch (etype)
+      {
+      case 0: mesh0->GetElementVertices(el,vertices); break;
+      case 1: mesh0->GetFaceVertices(el,vertices); break;
+      default:
+         MFEM_ABORT("Wrong entity type choice");
+         break;
+      }
+      for (int iv=0; iv<vertices.Size(); iv++)
+      {
+         int v = vertices[iv];
+         if (vmarker[v]) continue;
+         vmarker[v] = 1;
+         numvertices++;
+      }
+   }
+   cout << "Num of new vertices: " << numvertices << endl;
+
+   // Construct new mesh
+   Mesh * meshptr = nullptr;
+   switch (etype)
+   {
+   case 0: 
+      mesh = new Mesh(dim,numvertices, subelems); 
+      element_map = elems;
+      meshptr = mesh;
+      break;
+   case 1: 
+      surface_mesh = new Mesh(dim-1,numvertices, subelems,0,sdim);
+      surface_element_map = elems;
+      meshptr = surface_mesh;
+      break;
+      default:
+         MFEM_ABORT("Wrong entity type choice");
+         break;
+   }
+
+   Vector values;
+   const GridFunction * nodes0 = mesh0->GetNodes();
+   int vk = 0;
+   // if (nodes0) // this is NOT NEEDED here
+   // {
+   //    vcoords.SetSize(sdim, mesh0->GetNV());
+   //    for (int i = 0; i< sdim; i++)
+   //    {
+   //       nodes0->GetNodalValues(values,i+1);
+   //       vcoords.SetRow(i,values);
+   //       cout << "values size = " << values.Size() << endl;
+   //    }
+   //    for (int iv = 0; iv<mesh0->GetNV(); ++iv)
+   //    {
+   //       if (!vmarker[iv]) continue;
+   //       meshptr->AddVertex(vcoords.GetColumn(iv));
+   //       vmarker[iv] = ++vk;
+   //    }
+   // }
+   // else
+   {
+      for (int iv = 0; iv<mesh0->GetNV(); ++iv)
+      {
+         if (!vmarker[iv]) continue;
+         meshptr->AddVertex(mesh0->GetVertex(iv));
+         vmarker[iv] = ++vk;
+      }
+   }
+   // Add elements
+   for (int ie = 0; ie<subelems; ie++)
+   {
+      const Element * el = nullptr;
+      switch (etype)
+      {
+         case 0: el = mesh0->GetElement(elems[ie]); break;
+         case 1: el = mesh0->GetFace(elems[ie]); break;
+         default: MFEM_ABORT("Wrong entity type choice"); break;
+      }
+      Element * nel = meshptr->NewElement(el->GetGeometryType());
+      int nv0 = el->GetNVertices();
+      const int * v0 = el->GetVertices();
+      Array<int> v1(nv0);
+      for (int i=0; i<nv0; i++)
+      {
+         v1[i] = vmarker[v0[i]]-1;
+      }   
+      nel->SetVertices(v1.GetData());
+      meshptr->AddElement(nel);
+   }
+
+   meshptr->FinalizeTopology();
+   
+   if (nodes0)
+   {
+      cout << "nodes not null" << endl;
+      // Extract Nodes GridFunction and determine its type
+      const FiniteElementSpace * fes0 = nodes0->FESpace();
+
+      Ordering::Type ordering = fes0->GetOrdering();
+      int order = fes0->FEColl()->GetOrder();
+      bool discont = fes0->IsDGSpace();   
+
+      cout << "discont = " << discont << endl;
+      // Set curvature of the same type as original mesh
+      meshptr->SetCurvature(order, discont, sdim, ordering);
+
+      const FiniteElementSpace * fes1 = meshptr->GetNodalFESpace();
+      GridFunction * nodes = meshptr->GetNodes();
+
+      Array<int> vdofs0;
+      Array<int> vdofs;
+      Vector loc_vec;
+      
+      // Copy nodes to submesh
+      for (int e = 0; e < elems.Size(); e++)
+      {
+         fes1->GetElementVDofs(e, vdofs);
+         switch (etype)
+         {
+         case 0: 
+            fes0->GetElementVDofs(elems[e], vdofs0); 
+            nodes0->GetSubVector(vdofs0, loc_vec);
+            break;
+         case 1: 
+            if (!discont)
+            {
+               fes0->GetFaceVDofs(elems[e], vdofs0); 
+               nodes0->GetSubVector(vdofs0, loc_vec);
+            }
+            else
+            {
+               const FiniteElement * el = fes1->GetFE(e);
+               const IntegrationRule & ir = el->GetNodes(); 
+               int np = ir.GetNPoints();
+               FaceElementTransformations * Tr = 
+                  const_cast<Mesh *>(mesh0)->GetFaceElementTransformations(elems[e]);
+               int el1 = Tr->Elem1No;
+               loc_vec.SetSize(vdofs.Size());
+               for (int i = 0; i<np; i++)
+               {
+                  Tr->SetAllIntPoints(&ir[i]);
+                  const IntegrationPoint & ip = Tr->GetElement1IntPoint();
+                  Vector val;
+                  nodes0->GetVectorValue(el1,ip,val);
+                  for (int j = 0; j<val.Size(); j++)
+                  {
+                     loc_vec[i+j*np] = val[j];
+                  }
+               }
+            }
+            break;
+         default:
+            MFEM_ABORT("Wrong entity type choice");
+            break;
+         }
+         nodes->SetSubVector(vdofs, loc_vec);
+      }
+   }
+   
+   meshptr->Finalize();
+}
+
+
+void Subdomain::BuildDofMap(const entity_type & etype)
+{
+   Array<int> elems;
+   FiniteElementSpace * fesptr = nullptr;
+   const FiniteElementCollection *fec = fes0->FEColl();
+   switch(etype)
+   {
+   case 0: 
+      fesptr = new FiniteElementSpace(mesh,fec);
+      elems = element_map;
+      break;
+   case 1: 
+      fesptr = new FiniteElementSpace(surface_mesh,fec);
+      elems = surface_element_map;
+      break;
+   default:
+      MFEM_ABORT("Wrong entity type choice");
+      break;
+   }
+   
+   Array<int> dofs(fesptr->GetVSize());
+   for (int iel = 0; iel<elems.Size(); ++iel)
+   {
+      // index in the global mesh
+      int iel_idx = elems[iel];
+      // get the dofs of this element
+      Array<int> ldofs;
+      Array<int> gdofs;
+      switch(etype)
+      {
+         case 0: fes0->GetElementVDofs(iel_idx,gdofs); break;
+         case 1: fes0->GetFaceVDofs(iel_idx,gdofs); break;
+         default:  MFEM_ABORT("Wrong entity type");  break;
+      }
+      fesptr->GetElementDofs(iel,ldofs);
+         // the sizes have to match
+      MFEM_VERIFY(gdofs.Size() == ldofs.Size(),
+                  "Size inconsistency");
+     // loop through the dofs and take into account the signs;
+      int ndof = ldofs.Size();
+      for (int i = 0; i<ndof; ++i)
+      {
+         int ldof_ = ldofs[i];
+         int gdof_ = gdofs[i];
+         int ldof = (ldof_ >= 0) ? ldof_ : abs(ldof_) - 1;
+         int gdof = (gdof_ >= 0) ? gdof_ : abs(gdof_) - 1;
+         dofs[ldof] = gdof;
+      }
+   }
+   switch(etype)
+   {
+   case 0: 
+      dof_map = dofs; 
+      fes = fesptr;
+      break;
+   case 1: 
+      surface_dof_map = dofs; 
+      surface_fes = fesptr;
+      break;
+   default:  
+      MFEM_ABORT("Wrong entity type");  break;
+   }
+}
+
+void Subdomain::BuildProlongationMatrix(const entity_type & etype)
+{
+   Array<int> dofs;
+   SparseMatrix * Ptr = nullptr;
+   switch (etype)
+   {
+   case 0: 
+      if (!dof_map.Size()) BuildDofMap(etype);
+      dofs = dof_map; 
+      Ptr = P;
+      break;
+   case 1: 
+      if (!surface_dof_map.Size()) BuildDofMap(etype);
+      dofs = surface_dof_map; 
+      Ptr = Pf;
+      break;
+   default: 
+      MFEM_ABORT("Wrong entity type"); 
+      break;
+   }
+
+   int height = fes0->GetVSize();
+   int width = dofs.Size();
+   Ptr = new SparseMatrix(height,width);
+   for (int i = 0; i< dofs.Size(); i++)
+   {
+      int j = dofs[i];
+      Ptr->Set(j,i,1.);
+   }
+   Ptr->Finalize();
+
+   switch (etype)
+   {
+      case 0: P = Ptr; break;
+      case 1: Pf = Ptr; break;
+      default: MFEM_ABORT("Wrong entity type"); break;
+   }
+
+}
+
+Subdomain::~Subdomain()
+{
+   delete mesh;
+   delete surface_mesh;
+   delete fes; 
+   delete surface_fes;
+   delete P; 
+   delete Pf; 
+}
@@ -0,0 +1,106 @@
+#pragma once
+#include "mfem.hpp"
+#include <fstream>
+#include <iostream>
+using namespace std;
+using namespace mfem;
+
+
+class Subdomain
+{
+public:
+   enum entity_type
+   {
+      volume, 
+      surface
+   };
+private:
+   const Mesh *mesh0=nullptr;
+   int dim, sdim;
+   const FiniteElementSpace *fes0=nullptr;
+   DenseMatrix vcoords;
+   Mesh *mesh=nullptr; // Submesh 
+   Mesh *surface_mesh=nullptr; //Surface mesh 
+   FiniteElementSpace *fes=nullptr; // FE Space on the submesh
+   FiniteElementSpace *surface_fes=nullptr; // FE Space on the submesh
+
+   Array<int> element_map, surface_element_map;
+   Array<int> dof_map, surface_dof_map;
+   SparseMatrix * P=nullptr; 
+   SparseMatrix * Pf=nullptr; 
+   void BuildDofMap(const entity_type & etype);
+   void BuildProlongationMatrix(const entity_type & etype);
+   void BuildSubMesh(const Array<int> & elems, const entity_type & etype);
+
+public:
+   Subdomain(const Mesh & mesh_);
+   Mesh * GetSubMesh(const Array<int> & elems)
+   {
+      if(!mesh) BuildSubMesh(elems, entity_type::volume);
+      return mesh; 
+   }
+   Mesh * GetSurfaceMesh(const Array<int> & surface_elems)
+   {
+      if (!surface_mesh) BuildSubMesh(surface_elems, entity_type::surface);
+      return surface_mesh;
+   }
+   void SetFESpace(const FiniteElementSpace & fes0_)
+   {
+      fes0 = &fes0_;
+   }
+   void GetElementMap(Array<int> & element_map_)
+   {
+      element_map_ = element_map;
+   }
+   void GetFaceElementMap(Array<int> & surface_element_map_)
+   {
+      surface_element_map_ = surface_element_map;
+   }
+   void GetDofMap(Array<int> & dof_map_)
+   {
+      if (!dof_map.Size()) BuildDofMap(entity_type::volume);
+      dof_map_ = dof_map;
+   }
+   void GetSurfaceDofMap(Array<int> & surface_dof_map_)
+   {
+      if (!surface_dof_map.Size()) BuildDofMap(entity_type::surface);
+      surface_dof_map_ = surface_dof_map;
+   }
+   SparseMatrix * GetProlonationMatrix()
+   {
+      if (!P) BuildProlongationMatrix(entity_type::volume);
+      return P;
+   }
+   SparseMatrix * GetSurfaceProlonationMatrix()
+   {
+      if (!Pf) BuildProlongationMatrix(entity_type::surface);
+      return Pf;
+   }
+   FiniteElementSpace * GetSubFESpace(const entity_type & etype)
+   {
+      switch (etype)
+      {
+      case 0: 
+         if (!fes)
+         {
+            MFEM_VERIFY(mesh, "Volume mesh not built");
+            BuildDofMap(etype);
+         }
+         return fes; 
+         break;
+      case 1: 
+         if (!surface_fes)
+         {
+            MFEM_VERIFY(surface_mesh, "Surface mesh not built");
+            BuildDofMap(etype);
+         }
+         return surface_fes; 
+         break;
+      default: 
+         MFEM_ABORT("Wrong entity type"); 
+         return nullptr; 
+         break;
+      }
+   }
+   ~Subdomain();
+};
@@ -0,0 +1,96 @@
+
+#include "mfem.hpp"
+#include <fstream>
+#include <iostream>
+
+using namespace std;
+using namespace mfem;
+
+int main(int argc, char *argv[])
+{
+   // 1. Parse command line options
+   const char *mesh_file = "../../data/periodic-annulus-sector.msh";
+   int order = 1;
+
+   OptionsParser args(argc, argv);
+   args.AddOption(&mesh_file, "-m", "--mesh", "Mesh file to use.");
+   args.AddOption(&order, "-o", "--order", "Finite element polynomial degree");
+   args.ParseCheck();
+
+   // 2. Read the mesh from the given mesh file, and refine once uniformly.
+   Mesh orig_mesh(mesh_file);
+   orig_mesh.CheckElementOrientation(true);
+   orig_mesh.CheckBdrElementOrientation(true);
+
+   // mesh.EnsureNodes();
+   // mesh.UniformRefinement();
+   // Array<int> elems({1,3,21,10,20,2,0});
+   Array<int> elems({0,1,2,3});
+   // int nel = orig_mesh.GetNE();
+   int nel = elems.Size();
+   // Array<int> elems(nel);
+   // for (int i = 0; i<nel; i++)
+   // {
+      // elems[i] = i;
+   // }
+   // elems.Print();
+
+   Mesh new_mesh = Mesh::ExtractMesh(orig_mesh,elems);
+   new_mesh.CheckElementOrientation(true);
+   new_mesh.CheckBdrElementOrientation(true);
+   {
+      char vishost[] = "localhost";
+      int  visport   = 19916;
+      socketstream mesh0_sock(vishost, visport);
+      mesh0_sock.precision(8);
+      mesh0_sock << "mesh\n" << orig_mesh << "keys n \n" << flush;
+
+      socketstream mesh1_sock(vishost, visport);
+      mesh1_sock.precision(8);
+      mesh1_sock << "mesh\n" << new_mesh << "keys n \n" << flush;
+   }
+
+   Array<int> faces;
+   for (int i = 0; i<orig_mesh.GetNBE(); i++)
+   {
+      if (orig_mesh.GetBdrAttribute(i) >= 1)
+         faces.Append(orig_mesh.GetBdrFace(i));
+   }
+      // faces.Append(orig_mesh.GetBdrFace(1));
+      // faces.Append(orig_mesh.GetBdrFace(2));
+
+   Mesh surface_mesh = Mesh::ExtractSurfaceMesh(orig_mesh,faces);
+   surface_mesh.CheckElementOrientation(true);
+   surface_mesh.CheckBdrElementOrientation(true);
+
+   surface_mesh.Print();
+
+   if (surface_mesh.Dimension() > 1)
+   {
+      char vishost[] = "localhost";
+      int  visport   = 19916;
+
+      socketstream mesh2_sock(vishost, visport);
+      mesh2_sock.precision(8);
+      mesh2_sock << "mesh\n" << surface_mesh << "keys n \n" << flush;
+   }
+   else
+   {
+      ParaViewDataCollection paraview_dc("surf_mesh", &surface_mesh);
+      paraview_dc.SetPrefixPath("ParaView");
+      paraview_dc.SetLevelsOfDetail(3);
+      paraview_dc.SetCycle(0);
+      paraview_dc.SetDataFormat(VTKFormat::BINARY);
+      paraview_dc.SetHighOrderOutput(true);
+      paraview_dc.SetTime(0.0); // set the time
+      H1_FECollection fec(order,surface_mesh.Dimension());
+      FiniteElementSpace fespace(&surface_mesh,&fec);
+      GridFunction gf(&fespace);
+      gf.Randomize();
+      paraview_dc.RegisterField("solution",&gf);
+      paraview_dc.Save();
+   }
+
+   return 0;
+}
+
@@ -0,0 +1,180 @@
+
+#include "mfem.hpp"
+#include <fstream>
+#include <iostream>
+#include "mesh_partition.hpp"
+
+using namespace std;
+using namespace mfem;
+
+double sin_func(const Vector & x);
+
+int main(int argc, char *argv[])
+{
+   // 1. Parse command line options
+   const char *mesh_file = "../../data/periodic-annulus-sector.msh";
+   int order = 1;
+
+   OptionsParser args(argc, argv);
+   args.AddOption(&mesh_file, "-m", "--mesh", "Mesh file to use.");
+   args.AddOption(&order, "-o", "--order", "Finite element polynomial degree");
+   args.ParseCheck();
+
+   // 2. Read the mesh from the given mesh file, and refine once uniformly.
+   Mesh mesh(mesh_file);
+   // mesh.EnsureNodes();
+   // mesh.UniformRefinement();
+   // Array<int> elems0({0,1,2,3});
+   int nel = mesh.GetNE();
+   // int nel = 5;
+   Array<int> elems0(nel/2);
+   for (int i = 0; i<nel/2; i++)
+   {
+      elems0[i] = i;
+   }
+   elems0.Print();
+   // elems0.Append(24);
+   // elems0.Append(23);
+   // elems0.Append(26);
+   Subdomain subdomain0(mesh);
+
+   Mesh * submesh = subdomain0.GetSubMesh(elems0);
+
+
+   // cout << "number of boundary elements = " << mesh.GetNBE() << endl;
+   Array<int> faces(mesh.GetNBE()/2);
+   for (int i = 0; i<mesh.GetNBE()/2; i++)
+   {
+      faces[i] = mesh.GetBdrFace(i);
+   }
+   
+   Mesh * surfmesh = subdomain0.GetSurfaceMesh(faces);
+
+   H1_FECollection fec(order, mesh.Dimension());
+   FiniteElementSpace fespace(&mesh, &fec);
+   FunctionCoefficient coeff(sin_func);
+   GridFunction gf(&fespace);
+   gf.ProjectCoefficient(coeff);
+   {
+      char vishost[] = "localhost";
+      int  visport   = 19916;
+      socketstream mesh_sock(vishost, visport);
+      mesh_sock.precision(8);
+      // mesh_sock << "mesh\n" << mesh << "keys n \n" << flush;
+      mesh_sock << "solution\n" << mesh << gf <<  "keys jnmR \n" 
+      << "valuerange 0 1.0 \n" << flush;
+         // << flush;
+   }
+
+   subdomain0.SetFESpace(fespace);
+
+   SparseMatrix * P = subdomain0.GetProlonationMatrix();
+   FiniteElementSpace * elem_fes = 
+               subdomain0.GetSubFESpace(Subdomain::entity_type::volume);
+   GridFunction gf_e(elem_fes);
+   cout << "Size P = " << P->Height() << " x " << P->Width() << endl;
+   cout << "gf_e.Size = " << gf_e.Size() << endl;
+   cout << "gf.Size = " << gf.Size() << endl;
+   P->MultTranspose(gf,gf_e);
+
+   SparseMatrix * Pb = subdomain0.GetSurfaceProlonationMatrix();
+   FiniteElementSpace * bdr_elem_fes = 
+               subdomain0.GetSubFESpace(Subdomain::entity_type::surface);
+   GridFunction gf_b(bdr_elem_fes);
+   Pb->MultTranspose(gf,gf_b);
+
+   {
+      char vishost[] = "localhost";
+      int  visport   = 19916;
+      if (submesh)
+      {
+         socketstream mesh0_sock(vishost, visport);
+         mesh0_sock.precision(8);
+         // mesh0_sock << "mesh\n" << *submesh << "keys n \n" << flush;
+         mesh0_sock << "solution\n" << *submesh << gf_e << "keys nmR \n"
+         << "valuerange 0 1.0 \n" << flush;
+         // << flush;
+      }
+      if (surfmesh && mesh.Dimension() == 3)
+      {
+         socketstream mesh1_sock(vishost, visport);
+         mesh1_sock.precision(8);
+         // mesh1_sock << "mesh\n" << *bdrmesh0 << "keys n \n" << flush;
+         mesh1_sock << "solution\n" << *surfmesh << gf_b
+         << "valuerange 0 1.0 \n" << flush;
+         // << flush;
+      }
+   }
+
+   // ParaViewDataCollection paraview_dc("mesh_partition", surfmesh);
+   // paraview_dc.SetPrefixPath("ParaView");
+   // const FiniteElementSpace * fes_ = surfmesh->GetNodalFESpace();
+   // int ord = (fes_) ? fes_->GetOrder(0) : order;
+   // paraview_dc.SetLevelsOfDetail(ord);
+   // paraview_dc.SetCycle(0);
+   // paraview_dc.SetDataFormat(VTKFormat::BINARY);
+   // paraview_dc.SetHighOrderOutput(true);
+   // paraview_dc.SetTime(0.0); // set the time
+   // paraview_dc.RegisterField("solution",&gf_b);
+   // paraview_dc.Save();
+
+
+
+   // // ---------------------------------------------------------
+   // FiniteElementCollection *fec1 = new H1_FECollection(order, submesh->Dimension());
+   // FiniteElementSpace fespace1(submesh, fec1);
+   // Array<int> ess_tdof_list;
+   // if (submesh->bdr_attributes.Size())
+   // {
+   //    Array<int> ess_bdr(mesh.bdr_attributes.Max());
+   //    ess_bdr = 1;
+   //    fespace1.GetEssentialTrueDofs(ess_bdr, ess_tdof_list);
+   // }
+
+   // LinearForm b(&fespace1);
+   // ConstantCoefficient one(1.0);
+   // b.AddDomainIntegrator(new DomainLFIntegrator(one));
+   // b.Assemble();
+
+   // GridFunction x(&fespace1);
+   // x = 0.0;
+
+   // // 9. Set up the bilinear form a(.,.) on the finite element space
+   // //    corresponding to the Laplacian operator -Delta, by adding the Diffusion
+   // //    domain integrator.
+   // BilinearForm a(&fespace1);
+   // a.AddDomainIntegrator(new DiffusionIntegrator(one));
+   // a.Assemble();
+   // OperatorPtr A;
+   // Vector B, X;
+   // a.FormLinearSystem(ess_tdof_list, x, b, A, X, B);
+   // cout << "Size of linear system: " << A->Height() << endl;
+   // // Use a simple symmetric Gauss-Seidel preconditioner with PCG.
+   // GSSmoother M((SparseMatrix&)(*A));
+   // PCG(*A, M, B, X, 1, 200, 1e-12, 0.0);
+   // // 12. Recover the solution as a finite element grid function.
+   // a.RecoverFEMSolution(X, b, x);
+   // {
+   //    char vishost[] = "localhost";
+   //    int  visport   = 19916;
+   //    socketstream sol_sock2(vishost, visport);
+   //    sol_sock2.precision(8);
+   //    sol_sock2 << "solution\n" << *submesh << x << flush;
+   // }
+
+   return 0;
+}
+
+double sin_func(const Vector & x)
+{
+   Vector c(x.Size());
+   c.Randomize();
+   // double dotp = c*x;
+   // return (sin(10.0*M_PI*dotp));
+   // return sin(2.*M_PI*x[0]);
+   // return 1.-x[1]*x[1]/4.0;
+   // return (0.5-x[1])*(0.5-x[1]);
+   return x[1];
+   // double r = sqrt(x[0]*x[0] + x[1]*x[1] + x[2]*x[2]);
+   // return r;
+}
@@ -0,0 +1,178 @@
+
+#include "mfem.hpp"
+#include <fstream>
+#include <iostream>
+#include "mesh_partition.hpp"
+
+using namespace std;
+using namespace mfem;
+
+double sin_func(const Vector & x);
+
+int main(int argc, char *argv[])
+{
+   // 1. Parse command line options
+   const char *mesh_file = "../data/star.mesh";
+   int order = 1;
+
+   OptionsParser args(argc, argv);
+   args.AddOption(&mesh_file, "-m", "--mesh", "Mesh file to use.");
+   args.AddOption(&order, "-o", "--order", "Finite element polynomial degree");
+   args.ParseCheck();
+
+   // 2. Read the mesh from the given mesh file, and refine once uniformly.
+   Mesh mesh(mesh_file);
+   // mesh.Print(cout);
+   mesh.UniformRefinement();
+
+   // mesh.EnsureNodes();
+   // Array<int> elems0({0,4,8,12,16});
+   // Array<int> elems0({0,4,8,12,16});
+   // Array<int> elems0({6,7,8});
+   Array<int> elems0({0,1,2,3,4});
+   // Array<int> elems0({7,6,17,20,21,22});
+   // Array<int> elems0({0,1,2,3,4});
+   // Array<int> elems0({104,103,86,109});
+   // elems0.Print(cout, elems0.Size());
+   Subdomain subdomain0(mesh);
+   Mesh * submesh0 = subdomain0.GetSubMesh(elems0);
+
+   // Array<int> bdrelems0({8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23});
+   cout << "number of boundary elements = " << mesh.GetNBE() << endl;
+   Array<int> bdrelems0({0,1});
+   Array<int> faces(bdrelems0.Size());
+   for (int i = 0; i<bdrelems0.Size(); i++)
+   {
+      faces[i] = mesh.GetBdrFace(bdrelems0[i]);
+   }
+   Mesh * surfmesh0 = subdomain0.GetSurfaceMesh(faces);
+
+   H1_FECollection fec(order, mesh.Dimension());
+   FiniteElementSpace fespace(&mesh, &fec);
+   FunctionCoefficient coeff(sin_func);
+   GridFunction gf(&fespace);
+   gf.ProjectCoefficient(coeff);
+   {
+      char vishost[] = "localhost";
+      int  visport   = 19916;
+      socketstream mesh_sock(vishost, visport);
+      mesh_sock.precision(8);
+      mesh_sock << "solution\n" << mesh << gf 
+      << "valuerange -1.0 1.0 \n" << flush;
+   }
+
+   subdomain0.SetFESpace(fespace);
+
+   SparseMatrix * P = subdomain0.GetProlonationMatrix();
+   FiniteElementSpace * elem_fes = 
+               subdomain0.GetSubFESpace(Subdomain::entity_type::volume);
+   GridFunction gf_e(elem_fes);
+   P->MultTranspose(gf,gf_e);
+
+   SparseMatrix * Pf = subdomain0.GetSurfaceProlonationMatrix();
+   FiniteElementSpace * face_elem_fes = 
+               subdomain0.GetSubFESpace(Subdomain::entity_type::surface);
+   GridFunction gf_f(face_elem_fes);
+   Pf->MultTranspose(gf,gf_f);
+   {
+      char vishost[] = "localhost";
+      int  visport   = 19916;
+      if (submesh0)
+      {
+         socketstream mesh0_sock(vishost, visport);
+         mesh0_sock.precision(8);
+         // mesh0_sock << "mesh\n" << *submesh0 << "keys n \n" << flush;
+         mesh0_sock << "solution\n" << *submesh0 << gf_e 
+         << "valuerange -1.0 1.0 \n" << flush;
+      }
+      if (surfmesh0 && mesh.Dimension()==3)
+      {
+         socketstream mesh1_sock(vishost, visport);
+         mesh1_sock.precision(8);
+         // mesh1_sock << "mesh\n" << *bdrmesh0 << "keys n \n" << flush;
+         mesh1_sock << "solution\n" << *surfmesh0 << gf_f 
+         << "valuerange -1.0 1.0 \n" << flush;
+      }
+   }
+
+   // Array<int> bdr_faces;
+   // for (int i =0; i<mesh.GetNBE(); i++)
+   // {
+   //    int attr = mesh.GetBdrAttribute(i);
+   //    if (attr == 4)
+   //    {
+   //       bdr_faces.Append(mesh.GetBdrFace(i));
+   //    }
+   // }
+
+   // H1_FECollection fec(order, mesh.Dimension());
+   // FiniteElementSpace fespace(&mesh, &fec);
+   // FunctionCoefficient coeff(sin_func);
+   // GridFunction gf(&fespace);
+   // gf.ProjectCoefficient(coeff);
+   // {
+   //    char vishost[] = "localhost";
+   //    int  visport   = 19916;
+   //    socketstream mesh_sock(vishost, visport);
+   //    mesh_sock.precision(8);
+   //    // mesh_sock << "mesh\n" << mesh << "keys n \n" << flush;
+   //    mesh_sock << "solution\n" << mesh << gf << flush; 
+   //    // << "valuerange -5000.0 5000.0 \n" << flush;
+   //    // << "valuerange -1.0 1.0 \n" << flush;
+   // }
+
+   // Subdomain subdomain1(mesh);
+   // subdomain1.SetFESpace(fespace);
+   // Mesh * bdrmesh0 = subdomain1.GetBdrSurfaceMesh(bdr_faces);
+   // SparseMatrix * Pb = subdomain1.GetBdrProlonationMatrix();
+   // FiniteElementSpace * bdr_elem_fes = 
+   //             subdomain1.GetSubFESpace(Subdomain::entity_type::bdr);
+   // GridFunction gf_f(bdr_elem_fes);
+   // Pb->MultTranspose(gf,gf_f);
+
+
+
+   // // gf.Print();
+   // // gf_f.Print();
+   // // bdrmesh0->Print(cout);
+
+   // if (bdrmesh0)
+   // {
+   //    char vishost[] = "localhost";
+   //    int  visport   = 19916;
+   //    socketstream mesh1_sock(vishost, visport);
+   //    mesh1_sock.precision(8);
+   //    // mesh1_sock << "mesh\n" << *bdrmesh0 << "keys n \n" << flush;
+   //    mesh1_sock << "solution\n" << *bdrmesh0 << gf_f << flush;
+   //    // << "valuerange -5000.0 5000.0 \n" << flush;
+   // }
+
+   ParaViewDataCollection paraview_dc("mesh_partition", surfmesh0);
+   paraview_dc.SetPrefixPath("ParaView");
+   const FiniteElementSpace * fes_ = surfmesh0->GetNodalFESpace();
+   int ord = (fes_) ? fes_->GetOrder(0) : order;
+   paraview_dc.SetLevelsOfDetail(5);
+   paraview_dc.SetCycle(0);
+   paraview_dc.SetDataFormat(VTKFormat::BINARY);
+   paraview_dc.SetHighOrderOutput(true);
+   paraview_dc.SetTime(0.0); // set the time
+   paraview_dc.RegisterField("solution",&gf_f);
+   paraview_dc.Save();
+
+
+   return 0;
+}
+
+double sin_func(const Vector & x)
+{
+   Vector c(x.Size());
+   c.Randomize();
+   // double dotp = c*x;
+   double dotp = x.Sum();
+   // return (sin(10.0*M_PI*dotp));
+   // return sin(2.*M_PI*x[0]);
+   // return 1.-x[1]*x[1]/4.0;
+   return (0.5-x[1])*(0.5-x[1]);
+   // double r = sqrt(x[0]*x[0] + x[1]*x[1] + x[2]*x[2]);
+   // return r;
+}
@@ -1,286 +0,0 @@
-//                       MFEM Example 11 - Serial Version
-//
-// Compile with: make ex11
-//
-// Sample runs:  ex11 -m ../data/square-disc.mesh
-//               ex11 -m ../data/star.mesh
-//               ex11 -m ../data/star-mixed.mesh
-//               ex11 -m ../data/periodic-annulus-sector.msh
-//               ex11 -m ../data/square-disc-p2.vtk -o 2
-//               ex11 -m ../data/square-disc-p3.mesh -o 3
-//               ex11 -m ../data/square-disc-nurbs.mesh -o -1
-//               ex11 -m ../data/disc-nurbs.mesh -o -1 -n 20
-//               ex11 -m ../data/star-surf.mesh
-//               ex11 -m ../data/square-disc-surf.mesh
-//               ex11 -m ../data/inline-segment.mesh
-//               ex11 -m ../data/inline-quad.mesh
-//               ex11 -m ../data/inline-tri.mesh
-//               ex11 -m ../data/amr-quad.mesh
-//               ex11 -m ../data/amr-hex.mesh
-//               ex11 -m ../data/mobius-strip.mesh -n 8
-//
-// Description:  This example code demonstrates the use of MFEM to solve the
-//               eigenvalue problem -Delta u = lambda u with homogeneous
-//               Dirichlet boundary conditions.
-//
-//               We compute a number of the lowest eigenmodes by discretizing
-//               the Laplacian and Mass operators using a FE space of the
-//               specified order, or an isoparametric/isogeometric space if
-//               order < 1 (quadratic for quadratic curvilinear mesh, NURBS for
-//               NURBS mesh, etc.)
-//
-//               The example highlights the use of the ARPACK eigenvalue solver
-//               (regular inverse mode). Reusing a single GLVis visualization
-//               window for multiple eigenfunctions is also illustrated.
-//
-//               We recommend viewing Example 1 before viewing this example.
-
-#include "mfem.hpp"
-#include <fstream>
-#include <iostream>
-
-using namespace std;
-using namespace mfem;
-
-int main(int argc, char *argv[])
-{
-   // 1. Parse command-line options.
-   const char *mesh_file = "../../data/star.mesh";
-   int ser_ref_levels = 3;
-   int order = 1;
-   int nev = 5;
-   double dbc_eig = 1e3;
-   bool visualization = 1;
-
-   OptionsParser args(argc, argv);
-   args.AddOption(&mesh_file, "-m", "--mesh",
-                  "Mesh file to use.");
-   args.AddOption(&ser_ref_levels, "-rs", "--refine-serial",
-                  "Number of times to refine the mesh uniformly in serial.");
-   args.AddOption(&order, "-o", "--order",
-                  "Finite element order (polynomial degree) or -1 for"
-                  " isoparametric space.");
-   args.AddOption(&nev, "-n", "--num-eigs",
-                  "Number of desired eigenmodes.");
-   args.AddOption(&dbc_eig, "-d", "--dbc-eig",
-                  "Eigenvalues associated with Dirichlet BC "
-                  "(should be larger than the maximum desired eigenvalue).");
-   args.AddOption(&visualization, "-vis", "--visualization", "-no-vis",
-                  "--no-visualization",
-                  "Enable or disable GLVis visualization.");
-   args.Parse();
-   if (!args.Good())
-   {
-      args.PrintUsage(cout);
-      return 1;
-   }
-   args.PrintOptions(cout);
-
-   // 2. Read the (serial) mesh from the given mesh file on all processors. We
-   //    can handle triangular, quadrilateral, tetrahedral, hexahedral, surface
-   //    and volume meshes with the same code.
-   Mesh *mesh;
-   ifstream imesh(mesh_file);
-   if (!imesh)
-   {
-      cerr << "\nCan not open mesh file: " << mesh_file << '\n' << endl;
-      return 2;
-   }
-   mesh = new Mesh(imesh, 1, 1);
-   imesh.close();
-   int dim = mesh->Dimension();
-
-   // 3. Refine the serial mesh on all processors to increase the resolution. In
-   //    this example we do 'ref_levels' of uniform refinement (2 by default, or
-   //    specified on the command line with -rs).
-   for (int lev = 0; lev < ser_ref_levels; lev++)
-   {
-      mesh->UniformRefinement();
-   }
-
-   // 4. Define a finite element space on the mesh. Here we
-   //    use continuous Lagrange finite elements of the specified order. If
-   //    order < 1, we instead use an isoparametric/isogeometric space.
-   FiniteElementCollection *fec;
-   if (order > 0)
-   {
-      fec = new H1_FECollection(order, dim);
-   }
-   else if (mesh->GetNodes())
-   {
-      fec = mesh->GetNodes()->OwnFEC();
-   }
-   else
-   {
-      fec = new H1_FECollection(order = 1, dim);
-   }
-   FiniteElementSpace *fespace = new FiniteElementSpace(mesh, fec);
-   int size = fespace->GetVSize();
-
-   cout << "Number of unknowns: " << size << endl;
-
-   // 5. Set up the parallel bilinear forms a(.,.) and m(.,.) on the finite
-   //    element space. The first corresponds to the Laplacian operator -Delta,
-   //    while the second is a simple mass matrix needed on the right hand side
-   //    of the generalized eigenvalue problem below. The boundary conditions
-   //    are implemented by elimination with special values on the diagonal to
-   //    shift the Dirichlet eigenvalues out of the computational range. After
-   //    serial and parallel assembly we extract the corresponding parallel
-   //    matrices A and M.
-   ConstantCoefficient one(1.0);
-   Array<int> ess_bdr;
-   if (mesh->bdr_attributes.Size())
-   {
-      ess_bdr.SetSize(mesh->bdr_attributes.Max());
-      ess_bdr = 1;
-   }
-
-   BilinearForm *a = new BilinearForm(fespace);
-   a->AddDomainIntegrator(new DiffusionIntegrator(one));
-   if (mesh->bdr_attributes.Size() == 0)
-   {
-      // Add a mass term if the mesh has no boundary, e.g. periodic mesh or
-      // closed surface.
-      a->AddDomainIntegrator(new MassIntegrator(one));
-   }
-   a->Assemble();
-   if (mesh->bdr_attributes.Size() != 0)
-   {
-      a->EliminateEssentialBCDiag(ess_bdr, dbc_eig);
-   }
-   a->Finalize();
-
-   BilinearForm *m = new BilinearForm(fespace);
-   m->AddDomainIntegrator(new MassIntegrator(one));
-   m->Assemble();
-   if (mesh->bdr_attributes.Size() != 0)
-   {
-      // shift the eigenvalue corresponding to eliminated dofs to a large value
-      m->EliminateEssentialBCDiag(ess_bdr, 1.0);
-   }
-   m->Finalize();
-
-   // 6. Define and configure the ARPACK eigensolver
-   ArPackSym * arpack = new ArPackSym();
-   Solver    * solver = NULL;
-
-#ifndef MFEM_USE_SUITESPARSE
-   // 7. Define a simple symmetric Gauss-Seidel preconditioner and use it to
-   //    solve the system A X = B with PCG.
-   cout << "Building CGSolver" << endl;
-   GSSmoother M(m->SpMat());
-   CGSolver * cg_solver = new CGSolver;
-   cg_solver->SetPreconditioner(M);
-   cg_solver->SetRelTol(1.0e-12);
-   solver = cg_solver;
-#else
-   // 7. If MFEM was compiled with SuiteSparse, use UMFPACK to solve the system.
-   cout << "Building UMFPackSolver" << endl;
-   UMFPackSolver * umf_solver = new UMFPackSolver;
-   umf_solver->Control[UMFPACK_ORDERING] = UMFPACK_ORDERING_METIS;
-   solver = umf_solver;
-#endif
-   solver->SetOperator(m->SpMat());
-
-   arpack->SetNumModes(nev);
-   arpack->SetMaxIter(400);
-   arpack->SetTol(1e-8);
-   arpack->SetMode(2);
-   arpack->SetPrintLevel(2);
-
-   arpack->SetOperator(*a);
-   arpack->SetMassMatrix(*m);
-   arpack->SetSolver(*solver);
-
-   // 8. Compute the eigenmodes and extract the array of eigenvalues. Define a
-   //    parallel grid function to represent each of the eigenmodes returned by
-   //    the solver.
-   Array<double> eigenvalues;
-   arpack->Solve();
-   arpack->GetEigenvalues(eigenvalues);
-
-   cout << endl;
-   std::ios::fmtflags old_fmt = cout.flags();
-   cout.setf(std::ios::scientific);
-   std::streamsize old_prec = cout.precision(14);
-   for (int i=0; i<nev; i++)
-   {
-      cout << "Eigenvalue lambda   " << eigenvalues[i] << endl;
-   }
-   cout.precision(old_prec);
-   cout.flags(old_fmt);
-   cout << endl;
-
-   GridFunction x(fespace);
-
-   // 9. Save the refined mesh and the modes in parallel. This output can be
-   //    viewed later using GLVis: "glvis -np <np> -m mesh -g mode".
-   {
-      ostringstream mesh_name, mode_name;
-      mesh_name << "ex11.mesh";
-
-      ofstream mesh_ofs(mesh_name.str().c_str());
-      mesh_ofs.precision(8);
-      mesh->Print(mesh_ofs);
-
-      for (int i=0; i<nev; i++)
-      {
-         // convert eigenvector from HypreParVector to ParGridFunction
-         x = arpack->GetEigenvector(i);
-
-         mode_name << "mode_" << setfill('0') << setw(2) << i;
-
-         ofstream mode_ofs(mode_name.str().c_str());
-         mode_ofs.precision(8);
-         x.Save(mode_ofs);
-         mode_name.str("");
-      }
-   }
-
-   // 10. Send the solution by socket to a GLVis server.
-   if (visualization)
-   {
-      char vishost[] = "localhost";
-      int  visport   = 19916;
-      socketstream mode_sock(vishost, visport);
-      mode_sock.precision(8);
-
-      for (int i=0; i<nev; i++)
-      {
-         cout << "Eigenmode " << i+1 << '/' << nev
-              << ", Lambda = " << eigenvalues[i] << endl;
-
-         // convert eigenvector from HypreParVector to ParGridFunction
-         x = arpack->GetEigenvector(i);
-
-         mode_sock << "solution\n" << *mesh << x << flush
-                   << "window_title 'Eigenmode " << i+1 << '/' << nev
-                   << ", Lambda = " << eigenvalues[i] << "'" << endl;
-
-         char c;
-         cout << "press (q)uit or (c)ontinue --> " << flush;
-         cin >> c;
-
-         if (c != 'c')
-         {
-            break;
-         }
-      }
-      mode_sock.close();
-   }
-
-   // 11. Free the used memory.
-   delete arpack;
-   delete solver;
-   delete m;
-   delete a;
-
-   delete fespace;
-   if (order > 0)
-   {
-      delete fec;
-   }
-   delete mesh;
-
-   return 0;
-}
@@ -1,69 +0,0 @@
-# Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-# LICENSE and NOTICE for details. LLNL-CODE-806117.
-#
-# This file is part of the MFEM library. For more information and source code
-# availability visit https://mfem.org.
-#
-# MFEM is free software; you can redistribute it and/or modify it under the
-# terms of the BSD-3 license. We welcome feedback and contributions, see file
-# CONTRIBUTING.md for details.
-
-# Use the MFEM build directory
-MFEM_DIR ?= ../..
-MFEM_BUILD_DIR ?= ../..
-SRC = $(if $(MFEM_DIR:../..=),$(MFEM_DIR)/examples/arpack/,)
-CONFIG_MK = $(MFEM_BUILD_DIR)/config/config.mk
-# Use the MFEM install directory
-# MFEM_INSTALL_DIR = ../../mfem
-# CONFIG_MK = $(MFEM_INSTALL_DIR)/share/mfem/config.mk
-
-MFEM_LIB_FILE = mfem_is_not_built
-include $(CONFIG_MK)
-
-SEQ_EXAMPLES = ex11
-PAR_EXAMPLES = 
-ifeq ($(MFEM_USE_MPI),NO)
-   EXAMPLES = $(SEQ_EXAMPLES)
-else
-   EXAMPLES = $(PAR_EXAMPLES)
-endif
-RC_FILES = $(patsubst $(SRC)%,%,$(wildcard $(SRC)rc_*))
-
-.SUFFIXES:
-.SUFFIXES: .o .cpp .mk
-.PHONY: all clean clean-build clean-exec
-
-# Remove built-in rule
-%: %.cpp
-
-# Replace the default implicit rule for *.cpp files
-%: $(SRC)%.cpp $(MFEM_LIB_FILE) $(CONFIG_MK)
-	$(MFEM_CXX) $(MFEM_FLAGS) $< -o $@ $(MFEM_LIBS)
-
-all: $(EXAMPLES)
-
-# Examples depend on their corresponding rc_* files:
-make-rc-rule = $(1): | $(filter rc_$(1)%,$(RC_FILES))
-$(foreach ex,$(EXAMPLES),$(eval $(call make-rc-rule,$(ex))))
-
-# Rules to copy the rc_* files when building out-of-source:
-ifneq ($(SRC),)
-$(RC_FILES): %: $(SRC)%
-	cp -pf $(<) .
-endif
-
-# Generate an error message if the MFEM library is not built and exit
-$(MFEM_LIB_FILE):
-	$(error The MFEM library is not built)
-
-clean: clean-build clean-exec
-
-clean-build:
-	rm -f *.o *~ $(SEQ_EXAMPLES) $(PAR_EXAMPLES)
-	rm -rf *.dSYM *.TVD.*breakpoints
-
-clean-exec:
-	@rm -rf mesh.* sol.* sol_p.* sol_u.* Example5*
-	@rm -f ex9-mesh.* ex9-init.* ex9-final.* Example9*
-	@rm -f deformed.* velocity.* elastic_energy.*
@@ -1,18 +0,0 @@
-                    Finite Element Discretization Library
-                                   __
-                       _ __ ___   / _|  ___  _ __ ___
-                      | '_ ` _ \ | |_  / _ \| '_ ` _ \
-                      | | | | | ||  _||  __/| | | | | |
-                      |_| |_| |_||_|   \___||_| |_| |_|
-
-                               https://mfem.org
-
-This directory contains modifications of the example codes that illustrate the
-use of MFEM features based on the Caliper performance profiling library.
-
-To build these examples, make sure that MFEM is configured with the option
-"MFEM_USE_CALIPER = YES", see the top-level INSTALL file for details (version
-2.5.0 of Caliper is recommended, though older versions may work too).
-
-We recommend comparing the original example codes with the corresponding files
-in the current directory.
@@ -206,9 +206,9 @@ int main(int argc, char *argv[])
   cout << "Size of linear system: " << A->Height() << endl;

   // 11. Solve the linear system A X = B.
+   MFEM_PERF_BEGIN("Solve A X=B");
   if (!pa)
   {
-      MFEM_PERF_SCOPE("Solve A X=B (FA)");
 #ifndef MFEM_USE_SUITESPARSE
      // Use a simple symmetric Gauss-Seidel preconditioner with PCG.
      GSSmoother M((SparseMatrix&)(*A));
@@ -223,7 +223,6 @@ int main(int argc, char *argv[])
   }
   else // Jacobi preconditioning in partial assembly mode
   {
-      MFEM_PERF_SCOPE("Solve A X=B (PA)");
      if (UsesTensorBasis(fespace))
      {
         OperatorJacobiSmoother M(a, ess_tdof_list);
@@ -234,6 +233,7 @@ int main(int argc, char *argv[])
         CG(*A, B, X, 1, 400, 1e-12, 0.0);
      }
   }
+   MFEM_PERF_END("Solve A X=B");
   // 12. Recover the solution as a finite element grid function.
   a.RecoverFEMSolution(X, b, x);

@@ -231,29 +231,28 @@ int main(int argc, char *argv[])
   // 13. Solve the linear system A X = B.
   //     * With full assembly, use the BoomerAMG preconditioner from hypre.
   //     * With partial assembly, use Jacobi smoothing, for now.
+   MFEM_PERF_BEGIN("Solve A X = B");
+   Solver *prec = NULL;
+   if (pa)
   {
-      MFEM_PERF_SCOPE("Solve A X=B");
-      Solver *prec = NULL;
-      if (pa)
+      if (UsesTensorBasis(fespace))
      {
-         if (UsesTensorBasis(fespace))
-         {
-            prec = new OperatorJacobiSmoother(a, ess_tdof_list);
-         }
+         prec = new OperatorJacobiSmoother(a, ess_tdof_list);
      }
-      else
-      {
-         prec = new HypreBoomerAMG;
-      }
-      CGSolver cg(MPI_COMM_WORLD);
-      cg.SetRelTol(1e-12);
-      cg.SetMaxIter(2000);
-      cg.SetPrintLevel(1);
-      if (prec) { cg.SetPreconditioner(*prec); }
-      cg.SetOperator(*A);
-      cg.Mult(B, X);
-      delete prec;
   }
+   else
+   {
+      prec = new HypreBoomerAMG;
+   }
+   CGSolver cg(MPI_COMM_WORLD);
+   cg.SetRelTol(1e-12);
+   cg.SetMaxIter(2000);
+   cg.SetPrintLevel(1);
+   if (prec) { cg.SetPreconditioner(*prec); }
+   cg.SetOperator(*A);
+   cg.Mult(B, X);
+   delete prec;
+   MFEM_PERF_END("Solve A X = B");
   // 14. Recover the parallel grid function corresponding to X. This is the
   //     local finite element solution on each processor.
   a.RecoverFEMSolution(X, b, x);
@@ -9,7 +9,6 @@
 //               ex1 -m ../data/fichera.mesh
 //               ex1 -m ../data/fichera-mixed.mesh
 //               ex1 -m ../data/toroid-wedge.mesh
-//               ex1 -m ../data/octahedron.mesh -o 1
 //               ex1 -m ../data/periodic-annulus-sector.msh
 //               ex1 -m ../data/periodic-torus-sector.msh
 //               ex1 -m ../data/square-disc-p2.vtk -o 2
@@ -55,7 +55,6 @@ int main(int argc, char *argv[])
   int order = 1;
   int nev = 5;
   bool visualization = 1;
-   const char *device_config = "cpu";

   OptionsParser args(argc, argv);
   args.AddOption(&mesh_file, "-m", "--mesh",
@@ -72,8 +71,6 @@ int main(int argc, char *argv[])
   args.AddOption(&visualization, "-vis", "--visualization", "-no-vis",
                  "--no-visualization",
                  "Enable or disable GLVis visualization.");
-   args.AddOption(&device_config, "-d", "--device",
-                  "Device configuration string, see Device::Configure().");
   args.Parse();
   if (!args.Good())
   {
@@ -89,18 +86,13 @@ int main(int argc, char *argv[])
      args.PrintOptions(cout);
   }

-   // 3. Enable hardware devices such as GPUs, and programming models such as
-   //    CUDA, OCCA, RAJA and OpenMP based on command line options.
-   Device device(device_config);
-   if (myid == 0) { device.Print(); }
-
-   // 4. Read the (serial) mesh from the given mesh file on all processors. We
+   // 3. Read the (serial) mesh from the given mesh file on all processors. We
   //    can handle triangular, quadrilateral, tetrahedral, hexahedral, surface
   //    and volume meshes with the same code.
   Mesh *mesh = new Mesh(mesh_file, 1, 1);
   int dim = mesh->Dimension();

-   // 5. Refine the serial mesh on all processors to increase the resolution. In
+   // 4. Refine the serial mesh on all processors to increase the resolution. In
   //    this example we do 'ref_levels' of uniform refinement (2 by default, or
   //    specified on the command line with -rs).
   for (int lev = 0; lev < ser_ref_levels; lev++)
@@ -108,7 +100,7 @@ int main(int argc, char *argv[])
      mesh->UniformRefinement();
   }

-   // 6. Define a parallel mesh by a partitioning of the serial mesh. Refine
+   // 5. Define a parallel mesh by a partitioning of the serial mesh. Refine
   //    this mesh further in parallel to increase the resolution (1 time by
   //    default, or specified on the command line with -rp). Once the parallel
   //    mesh is defined, the serial mesh can be deleted.
@@ -118,8 +110,9 @@ int main(int argc, char *argv[])
   {
      pmesh->UniformRefinement();
   }
+   pmesh->ReorientTetMesh();

-   // 7. Define a parallel finite element space on the parallel mesh. Here we
+   // 6. Define a parallel finite element space on the parallel mesh. Here we
   //    use the Nedelec finite elements of the specified order.
   FiniteElementCollection *fec = new ND_FECollection(order, dim);
   ParFiniteElementSpace *fespace = new ParFiniteElementSpace(pmesh, fec);
@@ -129,7 +122,7 @@ int main(int argc, char *argv[])
      cout << "Number of unknowns: " << size << endl;
   }

-   // 8. Set up the parallel bilinear forms a(.,.) and m(.,.) on the finite
+   // 7. Set up the parallel bilinear forms a(.,.) and m(.,.) on the finite
   //    element space. The first corresponds to the curl curl, while the second
   //    is a simple mass matrix needed on the right hand side of the
   //    generalized eigenvalue problem below. The boundary conditions are
@@ -171,7 +164,7 @@ int main(int argc, char *argv[])
   delete a;
   delete m;

-   // 9. Define and configure the AME eigensolver and the AMS preconditioner for
+   // 8. Define and configure the AME eigensolver and the AMS preconditioner for
   //    A to be used within the solver. Set the matrices which define the
   //    generalized eigenproblem A x = lambda M x.
   HypreAMS *ams = new HypreAMS(*A,fespace);
@@ -187,15 +180,15 @@ int main(int argc, char *argv[])
   ame->SetMassMatrix(*M);
   ame->SetOperator(*A);

-   // 10. Compute the eigenmodes and extract the array of eigenvalues. Define a
-   //     parallel grid function to represent each of the eigenmodes returned by
-   //     the solver.
+   // 9. Compute the eigenmodes and extract the array of eigenvalues. Define a
+   //    parallel grid function to represent each of the eigenmodes returned by
+   //    the solver.
   Array<double> eigenvalues;
   ame->Solve();
   ame->GetEigenvalues(eigenvalues);
   ParGridFunction x(fespace);

-   // 11. Save the refined mesh and the modes in parallel. This output can be
+   // 10. Save the refined mesh and the modes in parallel. This output can be
   //     viewed later using GLVis: "glvis -np <np> -m mesh -g mode".
   {
      ostringstream mesh_name, mode_name;
@@ -220,7 +213,7 @@ int main(int argc, char *argv[])
      }
   }

-   // 12. Send the solution by socket to a GLVis server.
+   // 11. Send the solution by socket to a GLVis server.
   if (visualization)
   {
      char vishost[] = "localhost";
@@ -260,7 +253,7 @@ int main(int argc, char *argv[])
      mode_sock.close();
   }

-   // 13. Free the used memory.
+   // 12. Free the used memory.
   delete ame;
   delete ams;
   delete M;
@@ -24,10 +24,7 @@
 //               class ConductionOperator defining C(u)), as well as their
 //               implicit time integration. Note that implementing the method
 //               ConductionOperator::ImplicitSolve is the only requirement for
-//               high-order implicit (SDIRK) time integration. In this example,
-//               the diffusion operator is linearized by evaluating with the
-//               lagged solution from the previous timestep, so there is only
-//               a linear solve.
+//               high-order implicit (SDIRK) time integration.
 //
 //               We recommend viewing examples 2, 9 and 10 before viewing this
 //               example.
@@ -329,8 +326,8 @@ ConductionOperator::ConductionOperator(FiniteElementSpace &f, double al,
 void ConductionOperator::Mult(const Vector &u, Vector &du_dt) const
 {
   // Compute:
-   //    du_dt = M^{-1}*-Ku
-   // for du_dt, where K is linearized by using u from the previous timestep
+   //    du_dt = M^{-1}*-K(u)
+   // for du_dt
   Kmat.Mult(u, z);
   z.Neg(); // z = -z
   M_solver.Mult(z, du_dt);
@@ -341,7 +338,7 @@ void ConductionOperator::ImplicitSolve(const double dt,
 {
   // Solve the equation:
   //    du_dt = M^{-1}*[-K(u + dt*du_dt)]
-   // for du_dt, where K is linearized by using u from the previous timestep
+   // for du_dt
   if (!T)
   {
      T = Add(1.0, Mmat, dt, Kmat);
@@ -24,11 +24,8 @@
 //               class ConductionOperator defining C(u)), as well as their
 //               implicit time integration. Note that implementing the method
 //               ConductionOperator::ImplicitSolve is the only requirement for
-//               high-order implicit (SDIRK) time integration. In this example,
-//               the diffusion operator is linearized by evaluating with the
-//               lagged solution from the previous timestep, so there is only
-//               a linear solve. Optional saving with ADIOS2
-//               (adios2.readthedocs.io) is also illustrated.
+//               high-order implicit (SDIRK) time integration. Optional saving
+//               with ADIOS2 (adios2.readthedocs.io) is also illustrated.
 //
 //               We recommend viewing examples 2, 9 and 10 before viewing this
 //               example.
@@ -423,8 +420,8 @@ ConductionOperator::ConductionOperator(ParFiniteElementSpace &f, double al,
 void ConductionOperator::Mult(const Vector &u, Vector &du_dt) const
 {
   // Compute:
-   //    du_dt = M^{-1}*-Ku
-   // for du_dt, where K is linearized by using u from the previous timestep
+   //    du_dt = M^{-1}*-K(u)
+   // for du_dt
   Kmat.Mult(u, z);
   z.Neg(); // z = -z
   M_solver.Mult(z, du_dt);
@@ -435,7 +432,7 @@ void ConductionOperator::ImplicitSolve(const double dt,
 {
   // Solve the equation:
   //    du_dt = M^{-1}*[-K(u + dt*du_dt)]
-   // for du_dt, where K is linearized by using u from the previous timestep
+   // for du_dt
   if (!T)
   {
      T = Add(1.0, Mmat, dt, Kmat);
@@ -196,12 +196,6 @@ void InitialDeformation(const Vector &x, Vector &y);

 int main(int argc, char *argv[])
 {
-#ifdef HYPRE_USING_CUDA
-   cout << "\nAs of mfem-4.3 and hypre-2.22.0 (July 2021) this example\n"
-        << "is NOT supported with the CUDA version of hypre.\n\n";
-   return 255;
-#endif
-
   // 1. Initialize MPI
   MPI_Session mpi;
   const int myid = mpi.WorldRank();
@@ -444,19 +438,15 @@ JacobianPreconditioner::JacobianPreconditioner(Array<ParFiniteElementSpace *>
 void JacobianPreconditioner::Mult(const Vector &k, Vector &y) const
 {
   // Extract the blocks from the input and output vectors
-   Vector disp_in;
-   disp_in.MakeRef(const_cast<Vector&>(k), block_trueOffsets[0],
-                   block_trueOffsets[1]-block_trueOffsets[0]);
-   Vector pres_in;
-   pres_in.MakeRef(const_cast<Vector&>(k), block_trueOffsets[1],
-                   block_trueOffsets[2]-block_trueOffsets[1]);
+   Vector disp_in(k.GetData() + block_trueOffsets[0],
+                  block_trueOffsets[1]-block_trueOffsets[0]);
+   Vector pres_in(k.GetData() + block_trueOffsets[1],
+                  block_trueOffsets[2]-block_trueOffsets[1]);

-   Vector disp_out;
-   disp_out.MakeRef(y, block_trueOffsets[0],
-                    block_trueOffsets[1]-block_trueOffsets[0]);
-   Vector pres_out;
-   pres_out.MakeRef(y, block_trueOffsets[1],
-                    block_trueOffsets[2]-block_trueOffsets[1]);
+   Vector disp_out(y.GetData() + block_trueOffsets[0],
+                   block_trueOffsets[1]-block_trueOffsets[0]);
+   Vector pres_out(y.GetData() + block_trueOffsets[1],
+                   block_trueOffsets[2]-block_trueOffsets[1]);

   Vector temp(block_trueOffsets[1]-block_trueOffsets[0]);
   Vector temp2(block_trueOffsets[1]-block_trueOffsets[0]);
@@ -469,9 +459,6 @@ void JacobianPreconditioner::Mult(const Vector &k, Vector &y) const
   subtract(disp_in, temp, temp2);

   stiff_pcg->Mult(temp2, disp_out);
-
-   disp_out.SyncAliasMemory(y);
-   pres_out.SyncAliasMemory(y);
 }

 void JacobianPreconditioner::SetOperator(const Operator &op)
@@ -486,10 +473,7 @@ void JacobianPreconditioner::SetOperator(const Operator &op)

      if (!spaces[0]->GetParMesh()->Nonconforming())
      {
-#ifndef HYPRE_USING_CUDA
-         // Not available yet when hypre is built with CUDA
         stiff_prec_amg->SetElasticityOptions(spaces[0]);
-#endif
      }

      stiff_prec = stiff_prec_amg;
@@ -9,7 +9,6 @@
 //               mpirun -np 4 ex1p -m ../data/fichera.mesh
 //               mpirun -np 4 ex1p -m ../data/fichera-mixed.mesh
 //               mpirun -np 4 ex1p -m ../data/toroid-wedge.mesh
-//               mpirun -np 4 ex1p -m ../data/octahedron.mesh -o 1
 //               mpirun -np 4 ex1p -m ../data/periodic-annulus-sector.msh
 //               mpirun -np 4 ex1p -m ../data/periodic-torus-sector.msh
 //               mpirun -np 4 ex1p -m ../data/square-disc-p2.vtk -o 2
@@ -90,8 +89,7 @@ int main(int argc, char *argv[])
   args.AddOption(&device_config, "-d", "--device",
                  "Device configuration string, see Device::Configure().");
 #ifdef MFEM_USE_CEED
-   args.AddOption(&algebraic_ceed, "-a", "--algebraic",
-                  "-no-a", "--no-algebraic",
+   args.AddOption(&algebraic_ceed, "-a", "--algebraic", "-no-a", "--no-algebraic",
                  "Use algebraic Ceed solver");
 #endif
   args.AddOption(&visualization, "-vis", "--visualization", "-no-vis",
@@ -199,15 +197,15 @@ int main(int argc, char *argv[])
   b.AddDomainIntegrator(new DomainLFIntegrator(one));
   b.Assemble();

-   // 10. Define the solution vector x as a parallel finite element grid
-   //     function corresponding to fespace. Initialize x with initial guess of
-   //     zero, which satisfies the boundary conditions.
+   // 10. Define the solution vector x as a parallel finite element grid function
+   //     corresponding to fespace. Initialize x with initial guess of zero,
+   //     which satisfies the boundary conditions.
   ParGridFunction x(&fespace);
   x = 0.0;

   // 11. Set up the parallel bilinear form a(.,.) on the finite element space
-   //     corresponding to the Laplacian operator -Delta, by adding the
-   //     Diffusion domain integrator.
+   //     corresponding to the Laplacian operator -Delta, by adding the Diffusion
+   //     domain integrator.
   ParBilinearForm a(&fespace);
   if (pa) { a.SetAssemblyLevel(AssemblyLevel::PARTIAL); }
   a.AddDomainIntegrator(new DiffusionIntegrator(one));
@@ -13,8 +13,6 @@
 //               ex22 -m ../data/inline-hex.mesh -o 2 -p 1
 //               ex22 -m ../data/inline-hex.mesh -o 2 -p 2
 //               ex22 -m ../data/inline-hex.mesh -o 2 -p 2 -pa
-//               ex22 -m ../data/inline-wedge.mesh -o 1
-//               ex22 -m ../data/inline-pyramid.mesh -o 1
 //               ex22 -m ../data/star.mesh -r 1 -o 2 -sigma 10.0
 //
 // Device sample runs:
@@ -13,8 +13,6 @@
 //               mpirun -np 4 ex22p -m ../data/inline-hex.mesh -o 2 -p 1
 //               mpirun -np 4 ex22p -m ../data/inline-hex.mesh -o 2 -p 2
 //               mpirun -np 4 ex22p -m ../data/inline-hex.mesh -o 1 -p 2 -pa
-//               mpirun -np 4 ex22p -m ../data/inline-wedge.mesh -o 1
-//               mpirun -np 4 ex22p -m ../data/inline-pyramid.mesh -o 1
 //               mpirun -np 4 ex22p -m ../data/star.mesh -o 2 -sigma 10.0
 //
 // Device sample runs:
@@ -113,6 +113,7 @@ int main(int argc, char *argv[])
         mesh->UniformRefinement();
      }
   }
+   mesh->ReorientTetMesh();

   // 5. Define a finite element space on the mesh. Here we use Nedelec or
   //    Raviart-Thomas finite elements of the specified order.
@@ -141,6 +141,7 @@ int main(int argc, char *argv[])
         pmesh->UniformRefinement();
      }
   }
+   pmesh->ReorientTetMesh();

   // 7. Define a parallel finite element space on the parallel mesh. Here we
   //    use Nedelec or Raviart-Thomas finite elements of the specified order.
@@ -277,8 +277,10 @@ int main(int argc, char *argv[])
      mesh->UniformRefinement();
   }

-   // 6. Set element attributes in order to distinguish elements in the
-   //    PML region
+   // 6. Reorient mesh in case of a tet mesh
+   mesh->ReorientTetMesh();
+
+   // Set element attributes in order to distinguish elements in the PML region
   pml->SetAttributes(mesh);

   // 7. Define a finite element space on the mesh. Here we use the Nedelec
@@ -316,6 +316,9 @@ int main(int argc, char *argv[])
      }
   }

+   // 7a. Reorient mesh in case of a tet mesh
+   pmesh->ReorientTetMesh();
+
   // 8. Set element attributes in order to distinguish elements in the PML
   pml->SetAttributes(pmesh);

@@ -105,7 +105,7 @@ private:
      Vector diag(fespace.GetTrueVSize());
      bfs.Last()->AssembleDiagonal(diag);

-      Solver* smoother = new OperatorChebyshevSmoother(*opr, diag,
+      Solver* smoother = new OperatorChebyshevSmoother(opr.Ptr(), diag,
                                                       *essentialTrueDofs.Last(), 2);
      AddLevel(opr.Ptr(), smoother, true, true);
   }
@@ -115,7 +115,7 @@ private:
      Vector diag(fespace.GetTrueVSize());
      bfs.Last()->AssembleDiagonal(diag);

-      Solver* smoother = new OperatorChebyshevSmoother(*opr, diag,
+      Solver* smoother = new OperatorChebyshevSmoother(opr.Ptr(), diag,
                                                       *essentialTrueDofs.Last(), 2, fespace.GetParMesh()->GetComm());

      AddLevel(opr.Ptr(), smoother, true, true);
@@ -81,12 +81,6 @@ Mesh * build_trapezoid_mesh(double offset)

 int main(int argc, char *argv[])
 {
-#ifdef HYPRE_USING_CUDA
-   cout << "\nAs of mfem-4.3 and hypre-2.22.0 (July 2021) this example\n"
-        << "is NOT supported with the CUDA version of hypre.\n\n";
-   return 255;
-#endif
-
   // 1. Initialize MPI.
   int num_procs, myid;
   MPI_Init(&argc, &argv);
@@ -366,7 +360,6 @@ int main(int argc, char *argv[])
   }
   delete pmesh;

-   // HYPRE_Finalize();
   MPI_Finalize();

   return 0;
@@ -61,7 +61,6 @@ int main(int argc, char *argv[])
   bool visualization = 1;
   bool amg_elast = 0;
   bool reorder_space = false;
-   const char *device_config = "cpu";

   OptionsParser args(argc, argv);
   args.AddOption(&mesh_file, "-m", "--mesh",
@@ -79,8 +78,6 @@ int main(int argc, char *argv[])
                  "Enable or disable GLVis visualization.");
   args.AddOption(&reorder_space, "-nodes", "--by-nodes", "-vdim", "--by-vdim",
                  "Use byNODES ordering of vector space instead of byVDIM");
-   args.AddOption(&device_config, "-d", "--device",
-                  "Device configuration string, see Device::Configure().");
   args.Parse();
   if (!args.Good())
   {
@@ -96,12 +93,7 @@ int main(int argc, char *argv[])
      args.PrintOptions(cout);
   }

-   // 3. Enable hardware devices such as GPUs, and programming models such as
-   //    CUDA, OCCA, RAJA and OpenMP based on command line options.
-   Device device(device_config);
-   if (myid == 0) { device.Print(); }
-
-   // 4. Read the (serial) mesh from the given mesh file on all processors.  We
+   // 3. Read the (serial) mesh from the given mesh file on all processors.  We
   //    can handle triangular, quadrilateral, tetrahedral, hexahedral, surface
   //    and volume meshes with the same code.
   Mesh *mesh = new Mesh(mesh_file, 1, 1);
@@ -117,14 +109,14 @@ int main(int argc, char *argv[])
      return 3;
   }

-   // 5. Select the order of the finite element discretization space. For NURBS
+   // 4. Select the order of the finite element discretization space. For NURBS
   //    meshes, we increase the order by degree elevation.
   if (mesh->NURBSext)
   {
      mesh->DegreeElevate(order, order);
   }

-   // 6. Refine the serial mesh on all processors to increase the resolution. In
+   // 5. Refine the serial mesh on all processors to increase the resolution. In
   //    this example we do 'ref_levels' of uniform refinement. We choose
   //    'ref_levels' to be the largest number that gives a final mesh with no
   //    more than 1,000 elements.
@@ -137,7 +129,7 @@ int main(int argc, char *argv[])
      }
   }

-   // 7. Define a parallel mesh by a partitioning of the serial mesh. Refine
+   // 6. Define a parallel mesh by a partitioning of the serial mesh. Refine
   //    this mesh further in parallel to increase the resolution. Once the
   //    parallel mesh is defined, the serial mesh can be deleted.
   ParMesh *pmesh = new ParMesh(MPI_COMM_WORLD, *mesh);
@@ -150,7 +142,7 @@ int main(int argc, char *argv[])
      }
   }

-   // 8. Define a parallel finite element space on the parallel mesh. Here we
+   // 7. Define a parallel finite element space on the parallel mesh. Here we
   //    use vector finite elements, i.e. dim copies of a scalar finite element
   //    space. We use the ordering by vector dimension (the last argument of
   //    the FiniteElementSpace constructor) which is expected in the systems
@@ -183,7 +175,7 @@ int main(int argc, char *argv[])
           << "Assembling: " << flush;
   }

-   // 9. Determine the list of true (i.e. parallel conforming) essential
+   // 8. Determine the list of true (i.e. parallel conforming) essential
   //    boundary dofs. In this example, the boundary conditions are defined by
   //    marking only boundary attribute 1 from the mesh as essential and
   //    converting it to a list of true dofs.
@@ -192,14 +184,14 @@ int main(int argc, char *argv[])
   ess_bdr[0] = 1;
   fespace->GetEssentialTrueDofs(ess_bdr, ess_tdof_list);

-   // 10. Set up the parallel linear form b(.) which corresponds to the
-   //     right-hand side of the FEM linear system. In this case, b_i equals the
-   //     boundary integral of f*phi_i where f represents a "pull down" force on
-   //     the Neumann part of the boundary and phi_i are the basis functions in
-   //     the finite element fespace. The force is defined by the object f, which
-   //     is a vector of Coefficient objects. The fact that f is non-zero on
-   //     boundary attribute 2 is indicated by the use of piece-wise constants
-   //     coefficient for its last component.
+   // 9. Set up the parallel linear form b(.) which corresponds to the
+   //    right-hand side of the FEM linear system. In this case, b_i equals the
+   //    boundary integral of f*phi_i where f represents a "pull down" force on
+   //    the Neumann part of the boundary and phi_i are the basis functions in
+   //    the finite element fespace. The force is defined by the object f, which
+   //    is a vector of Coefficient objects. The fact that f is non-zero on
+   //    boundary attribute 2 is indicated by the use of piece-wise constants
+   //    coefficient for its last component.
   VectorArrayCoefficient f(dim);
   for (int i = 0; i < dim-1; i++)
   {
@@ -220,13 +212,13 @@ int main(int argc, char *argv[])
   }
   b->Assemble();

-   // 11. Define the solution vector x as a parallel finite element grid
+   // 10. Define the solution vector x as a parallel finite element grid
   //     function corresponding to fespace. Initialize x with initial guess of
   //     zero, which satisfies the boundary conditions.
   ParGridFunction x(fespace);
   x = 0.0;

-   // 12. Set up the parallel bilinear form a(.,.) on the finite element space
+   // 11. Set up the parallel bilinear form a(.,.) on the finite element space
   //     corresponding to the linear elasticity integrator with piece-wise
   //     constants coefficient lambda and mu.
   Vector lambda(pmesh->attributes.Max());
@@ -241,7 +233,7 @@ int main(int argc, char *argv[])
   ParBilinearForm *a = new ParBilinearForm(fespace);
   a->AddDomainIntegrator(new ElasticityIntegrator(lambda_func, mu_func));

-   // 13. Assemble the parallel bilinear form and the corresponding linear
+   // 12. Assemble the parallel bilinear form and the corresponding linear
   //     system, applying any necessary transformations such as: parallel
   //     assembly, eliminating boundary conditions, applying conforming
   //     constraints for non-conforming AMR, static condensation, etc.
@@ -258,7 +250,7 @@ int main(int argc, char *argv[])
      cout << "Size of linear system: " << A.GetGlobalNumRows() << endl;
   }

-   // 14. Define and apply a parallel PCG solver for A X = B with the BoomerAMG
+   // 13. Define and apply a parallel PCG solver for A X = B with the BoomerAMG
   //     preconditioner from hypre.
   HypreBoomerAMG *amg = new HypreBoomerAMG(A);
   if (amg_elast && !a->StaticCondensationIsEnabled())
@@ -276,11 +268,11 @@ int main(int argc, char *argv[])
   pcg->SetPreconditioner(*amg);
   pcg->Mult(B, X);

-   // 15. Recover the parallel grid function corresponding to X. This is the
+   // 14. Recover the parallel grid function corresponding to X. This is the
   //     local finite element solution on each processor.
   a->RecoverFEMSolution(X, *b, x);

-   // 16. For non-NURBS meshes, make the mesh curved based on the finite element
+   // 15. For non-NURBS meshes, make the mesh curved based on the finite element
   //     space. This means that we define the mesh elements through a fespace
   //     based transformation of the reference element.  This allows us to save
   //     the displaced mesh as a curved mesh when using high-order finite
@@ -292,7 +284,7 @@ int main(int argc, char *argv[])
      pmesh->SetNodalFESpace(fespace);
   }

-   // 17. Save in parallel the displaced mesh and the inverted solution (which
+   // 16. Save in parallel the displaced mesh and the inverted solution (which
   //     gives the backward displacements to the original grid). This output
   //     can be viewed later using GLVis: "glvis -np <np> -m mesh -g sol".
   {
@@ -313,7 +305,7 @@ int main(int argc, char *argv[])
      x.Save(sol_ofs);
   }

-   // 18. Send the above data by socket to a GLVis server.  Use the "n" and "b"
+   // 17. Send the above data by socket to a GLVis server.  Use the "n" and "b"
   //     keys in GLVis to visualize the displacements.
   if (visualization)
   {
@@ -325,7 +317,7 @@ int main(int argc, char *argv[])
      sol_sock << "solution\n" << *pmesh << x << flush;
   }

-   // 19. Free the used memory.
+   // 18. Free the used memory.
   delete pcg;
   delete amg;
   delete a;
@@ -16,8 +16,6 @@
 //               ex3 -m ../data/beam-hex-nurbs.mesh
 //               ex3 -m ../data/amr-hex.mesh
 //               ex3 -m ../data/fichera-amr.mesh
-//               ex3 -m ../data/ref-prism.mesh -o 1
-//               ex3 -m ../data/octahedron.mesh -o 1
 //               ex3 -m ../data/star-surf.mesh -o 1
 //               ex3 -m ../data/mobius-strip.mesh -f 0.1
 //               ex3 -m ../data/klein-bottle.mesh -f 0.1
@@ -115,6 +113,7 @@ int main(int argc, char *argv[])
         mesh->UniformRefinement();
      }
   }
+   mesh->ReorientTetMesh();

   // 5. Define a finite element space on the mesh. Here we use the Nedelec
   //    finite elements of the specified order.
@@ -16,8 +16,6 @@
 //               mpirun -np 4 ex3p -m ../data/beam-hex-nurbs.mesh
 //               mpirun -np 4 ex3p -m ../data/amr-quad.mesh -o 2
 //               mpirun -np 4 ex3p -m ../data/amr-hex.mesh
-//               mpirun -np 4 ex3p -m ../data/ref-prism.mesh -o 1
-//               mpirun -np 4 ex3p -m ../data/octahedron.mesh -o 1
 //               mpirun -np 4 ex3p -m ../data/star-surf.mesh -o 2
 //               mpirun -np 4 ex3p -m ../data/mobius-strip.mesh -o 2 -f 0.1
 //               mpirun -np 4 ex3p -m ../data/klein-bottle.mesh -o 2 -f 0.1
@@ -105,7 +103,6 @@ int main(int argc, char *argv[])
      {
         args.PrintUsage(cout);
      }
-      // HYPRE_Finalize();
      MPI_Finalize();
      return 1;
   }
@@ -141,7 +138,9 @@ int main(int argc, char *argv[])

   // 6. Define a parallel mesh by a partitioning of the serial mesh. Refine
   //    this mesh further in parallel to increase the resolution. Once the
-   //    parallel mesh is defined, the serial mesh can be deleted.
+   //    parallel mesh is defined, the serial mesh can be deleted. Tetrahedral
+   //    meshes need to be reoriented before we can define high-order Nedelec
+   //    spaces on them.
   ParMesh *pmesh = new ParMesh(MPI_COMM_WORLD, *mesh);
   delete mesh;
   {
@@ -151,6 +150,7 @@ int main(int argc, char *argv[])
         pmesh->UniformRefinement();
      }
   }
+   pmesh->ReorientTetMesh();

   // 7. Define a parallel finite element space on the parallel mesh. Here we
   //    use the Nedelec finite elements of the specified order.
@@ -19,8 +19,6 @@
 //               ex4 -m ../data/amr-hex.mesh
 //               ex4 -m ../data/amr-hex.mesh -o 2 -hb
 //               ex4 -m ../data/fichera-amr.mesh -o 2 -sc
-//               ex4 -m ../data/ref-prism.mesh -o 1
-//               ex4 -m ../data/octahedron.mesh -o 1
 //               ex4 -m ../data/star-surf.mesh -o 1
 //
 // Device sample runs:
@@ -19,8 +19,6 @@
 //               mpirun -np 3 ex4p -m ../data/amr-quad.mesh -o 2 -hb
 //               mpirun -np 4 ex4p -m ../data/amr-hex.mesh -o 2 -sc
 //               mpirun -np 4 ex4p -m ../data/amr-hex.mesh -o 2 -hb
-//               mpirun -np 4 ex4p -m ../data/ref-prism.mesh -o 1
-//               mpirun -np 4 ex4p -m ../data/octahedron.mesh -o 1
 //               mpirun -np 4 ex4p -m ../data/star-surf.mesh -o 3 -hb
 //
 // Device sample runs:
@@ -137,7 +135,9 @@ int main(int argc, char *argv[])

   // 6. Define a parallel mesh by a partitioning of the serial mesh. Refine
   //    this mesh further in parallel to increase the resolution. Once the
-   //    parallel mesh is defined, the serial mesh can be deleted.
+   //    parallel mesh is defined, the serial mesh can be deleted. Tetrahedral
+   //    meshes need to be reoriented before we can define high-order Nedelec
+   //    spaces on them (this is needed in the ADS solver below).
   ParMesh *pmesh = new ParMesh(MPI_COMM_WORLD, *mesh);
   delete mesh;
   {
@@ -147,6 +147,7 @@ int main(int argc, char *argv[])
         pmesh->UniformRefinement();
      }
   }
+   pmesh->ReorientTetMesh();

   // 7. Define a parallel finite element space on the parallel mesh. Here we
   //    use the Raviart-Thomas finite elements of the specified order.
@@ -197,7 +197,6 @@ int main(int argc, char *argv[])
      SparseMatrix &M(mVarf->SpMat());
      SparseMatrix &B(bVarf->SpMat());
      B *= -1.;
-      if (Device::IsEnabled()) { B.BuildTranspose(); }
      Bt = new TransposeOperator(&B);

      darcyOp.SetBlock(0,0, &M);
@@ -241,7 +240,6 @@ int main(int argc, char *argv[])
   {
      SparseMatrix &M(mVarf->SpMat());
      M.GetDiag(Md);
-      Md.HostReadWrite();

      SparseMatrix &B(bVarf->SpMat());
      MinvBt = Transpose(B);
@@ -289,18 +287,12 @@ int main(int argc, char *argv[])
   chrono.Stop();

   if (solver.GetConverged())
-   {
      std::cout << "MINRES converged in " << solver.GetNumIterations()
-                << " iterations with a residual norm of "
-                << solver.GetFinalNorm() << ".\n";
-   }
+                << " iterations with a residual norm of " << solver.GetFinalNorm() << ".\n";
   else
-   {
      std::cout << "MINRES did not converge in " << solver.GetNumIterations()
-                << " iterations. Residual norm is " << solver.GetFinalNorm()
-                << ".\n";
-   }
-   std::cout << "MINRES solver took " << chrono.RealTime() << "s.\n";
+                << " iterations. Residual norm is " << solver.GetFinalNorm() << ".\n";
+   std::cout << "MINRES solver took " << chrono.RealTime() << "s. \n";

   // 12. Create the grid functions u and p. Compute the L2 error norms.
   GridFunction u, p;
@@ -47,7 +47,6 @@ int main(int argc, char *argv[])
   int order = 2;
   bool always_snap = false;
   bool visualization = 1;
-   const char *device_config = "cpu";

   OptionsParser args(argc, argv);
   args.AddOption(&elem_type, "-e", "--elem",
@@ -66,8 +65,6 @@ int main(int argc, char *argv[])
                  "--snap-at-the-end",
                  "If true, snap nodes to the sphere initially and after each refinement "
                  "otherwise, snap only after the last refinement");
-   args.AddOption(&device_config, "-d", "--device",
-                  "Device configuration string, see Device::Configure().");
   args.Parse();
   if (!args.Good())
   {
@@ -83,12 +80,7 @@ int main(int argc, char *argv[])
      args.PrintOptions(cout);
   }

-   // 3. Enable hardware devices such as GPUs, and programming models such as
-   //    CUDA, OCCA, RAJA and OpenMP based on command line options.
-   Device device(device_config);
-   if (myid == 0) { device.Print(); }
-
-   // 4. Generate an initial high-order (surface) mesh on the unit sphere. The
+   // 3. Generate an initial high-order (surface) mesh on the unit sphere. The
   //    Mesh object represents a 2D mesh in 3 spatial dimensions. We first add
   //    the elements and the vertices of the mesh, and then make it high-order
   //    by specifying a finite element space for its nodes.
@@ -154,7 +146,7 @@ int main(int argc, char *argv[])
   FiniteElementSpace nodal_fes(mesh, &fec, mesh->SpaceDimension());
   mesh->SetNodalFESpace(&nodal_fes);

-   // 5. Refine the mesh while snapping nodes to the sphere. Number of parallel
+   // 4. Refine the mesh while snapping nodes to the sphere. Number of parallel
   //    refinements is fixed to 2.
   for (int l = 0; l <= ref_levels; l++)
   {
@@ -226,7 +218,7 @@ int main(int argc, char *argv[])
      SnapNodes(*pmesh);
   }

-   // 6. Define a finite element space on the mesh. Here we use isoparametric
+   // 5. Define a finite element space on the mesh. Here we use isoparametric
   //    finite elements -- the same as the mesh nodes.
   ParFiniteElementSpace *fespace = new ParFiniteElementSpace(pmesh, &fec);
   HYPRE_BigInt size = fespace->GlobalTrueVSize();
@@ -235,7 +227,7 @@ int main(int argc, char *argv[])
      cout << "Number of unknowns: " << size << endl;
   }

-   // 7. Set up the linear form b(.) which corresponds to the right-hand side of
+   // 6. Set up the linear form b(.) which corresponds to the right-hand side of
   //    the FEM linear system, which in this case is (1,phi_i) where phi_i are
   //    the basis functions in the finite element fespace.
   ParLinearForm *b = new ParLinearForm(fespace);
@@ -245,27 +237,27 @@ int main(int argc, char *argv[])
   b->AddDomainIntegrator(new DomainLFIntegrator(rhs_coef));
   b->Assemble();

-   // 8. Define the solution vector x as a finite element grid function
+   // 7. Define the solution vector x as a finite element grid function
   //    corresponding to fespace. Initialize x with initial guess of zero.
   ParGridFunction x(fespace);
   x = 0.0;

-   // 9. Set up the bilinear form a(.,.) on the finite element space
+   // 8. Set up the bilinear form a(.,.) on the finite element space
   //    corresponding to the Laplacian operator -Delta, by adding the Diffusion
   //    and Mass domain integrators.
   ParBilinearForm *a = new ParBilinearForm(fespace);
   a->AddDomainIntegrator(new DiffusionIntegrator(one));
   a->AddDomainIntegrator(new MassIntegrator(one));

-   // 10. Assemble the parallel linear system, applying any transformations
-   //     such as: parallel assembly, applying conforming constraints, etc.
+   // 9. Assemble the parallel linear system, applying any transformations
+   //    such as: parallel assembly, applying conforming constraints, etc.
   a->Assemble();
   HypreParMatrix A;
   Vector B, X;
   Array<int> empty_tdof_list;
   a->FormLinearSystem(empty_tdof_list, x, *b, A, X, B);

-   // 11. Define and apply a parallel PCG solver for AX=B with the BoomerAMG
+   // 10. Define and apply a parallel PCG solver for AX=B with the BoomerAMG
   //     preconditioner from hypre. Extract the parallel grid function x
   //     corresponding to the finite element approximation X. This is the local
   //     solution on each processor.
@@ -281,14 +273,14 @@ int main(int argc, char *argv[])
   delete a;
   delete b;

-   // 12. Compute and print the L^2 norm of the error.
+   // 11. Compute and print the L^2 norm of the error.
   double err = x.ComputeL2Error(sol_coef);
   if (myid == 0)
   {
      cout << "\nL2 norm of error: " << err << endl;
   }

-   // 13. Save the refined mesh and the solution. This output can be viewed
+   // 12. Save the refined mesh and the solution. This output can be viewed
   //     later using GLVis: "glvis -np <np> -m sphere_refined -g sol".
   {
      ostringstream mesh_name, sol_name;
@@ -304,7 +296,7 @@ int main(int argc, char *argv[])
      x.Save(sol_ofs);
   }

-   // 14. Send the solution by socket to a GLVis server.
+   // 13. Send the solution by socket to a GLVis server.
   if (visualization)
   {
      char vishost[] = "localhost";
@@ -315,7 +307,7 @@ int main(int argc, char *argv[])
      sol_sock << "solution\n" << *pmesh << x << flush;
   }

-   // 15. Free the used memory.
+   // 14. Free the used memory.
   delete pcg;
   delete amg;
   delete fespace;
@@ -106,6 +106,7 @@ int main(int argc, char *argv[])
         pmesh->UniformRefinement();
      }
   }
+   pmesh->ReorientTetMesh();

   // 6. Define the trial, interfacial (trace) and test DPG spaces:
   //    - The trial space, x0_space, contains the non-interfacial unknowns and
@@ -26,9 +26,6 @@ SEQ_EXAMPLES = ex0 ex1 ex2 ex3 ex4 ex5 ex6 ex7 ex8 ex9 ex10 ex14 ex15 ex16 \
 PAR_EXAMPLES = ex0p ex1p ex2p ex3p ex4p ex5p ex6p ex7p ex8p ex9p ex10p ex11p \
  ex12p ex13p ex14p ex15p ex16p ex17p ex18p ex19p ex20p ex21p ex22p ex24p \
  ex25p ex26p ex27p ex28p ex29p
-SEQ_DEVICE_EXAMPLES = ex1 ex3 ex4 ex5 ex6 ex9 ex22 ex24 ex25 ex26
-PAR_DEVICE_EXAMPLES = ex1p ex2p ex3p ex4p ex5p ex6p ex7p ex9p ex13p ex22p \
-  ex24p ex25p ex26p

 ifeq ($(MFEM_USE_MPI),NO)
   EXAMPLES = $(SEQ_EXAMPLES)
@@ -102,14 +99,6 @@ RUN_MPI = $(MFEM_MPIEXEC) $(MFEM_MPIEXEC_NP) $(MFEM_MPI_NP)
 	@$(call mfem-test,$<, $(RUN_MPI), Parallel example)
 %-test-seq: %
 	@$(call mfem-test,$<,, Serial example)
-%-test-par-cuda: %
-	@$(call mfem-test,$<, $(RUN_MPI), Parallel CUDA example,-d cuda)
-%-test-seq-cuda: %
-	@$(call mfem-test,$<,, Serial CUDA example,-d cuda)
-%-test-par-hip: %
-	@$(call mfem-test,$<, $(RUN_MPI), Parallel HIP example,-d hip)
-%-test-seq-hip: %
-	@$(call mfem-test,$<,, Serial HIP example,-d hip)

 # Testing: Specific execution options
 ex0-test-seq: ex0
@@ -121,7 +121,9 @@ int main(int argc, char *argv[])

   // 5. Define a parallel mesh by a partitioning of the serial mesh. Refine
   //    this mesh further in parallel to increase the resolution. Once the
-   //    parallel mesh is defined, the serial mesh can be deleted.
+   //    parallel mesh is defined, the serial mesh can be deleted. Tetrahedral
+   //    meshes need to be reoriented before we can define high-order Nedelec
+   //    spaces on them.
   ParMesh *pmesh = new ParMesh(MPI_COMM_WORLD, *mesh);
   delete mesh;
   {
@@ -131,6 +133,7 @@ int main(int argc, char *argv[])
         pmesh->UniformRefinement();
      }
   }
+   pmesh->ReorientTetMesh();

   // 6. Define a parallel finite element space on the parallel mesh. Here we
   //    use the Nedelec finite elements of the specified order.
@@ -122,7 +122,9 @@ int main(int argc, char *argv[])

   // 5. Define a parallel mesh by a partitioning of the serial mesh. Refine
   //    this mesh further in parallel to increase the resolution. Once the
-   //    parallel mesh is defined, the serial mesh can be deleted.
+   //    parallel mesh is defined, the serial mesh can be deleted. Tetrahedral
+   //    meshes need to be reoriented before we can define high-order Nedelec
+   //    spaces on them (this is needed in the ADS solver below).
   ParMesh *pmesh = new ParMesh(MPI_COMM_WORLD, *mesh);
   delete mesh;
   {
@@ -132,6 +134,7 @@ int main(int argc, char *argv[])
         pmesh->UniformRefinement();
      }
   }
+   pmesh->ReorientTetMesh();

   // 6. Define a parallel finite element space on the parallel mesh. Here we
   //    use the Raviart-Thomas finite elements of the specified order.
@@ -1,250 +0,0 @@
-//                       MFEM Example 11 - Serial Version
-//
-// Compile with: make ex11
-//
-// Sample runs:  ex11 -m ../data/square-disc.mesh
-//               ex11 -m ../data/star.mesh
-//               ex11 -m ../data/star-mixed.mesh
-//               ex11 -m ../data/periodic-annulus-sector.msh
-//               ex11 -m ../data/square-disc-p2.vtk -o 2
-//               ex11 -m ../data/square-disc-p3.mesh -o 3
-//               ex11 -m ../data/square-disc-nurbs.mesh -o -1
-//               ex11 -m ../data/disc-nurbs.mesh -o -1 -n 20
-//               ex11 -m ../data/star-surf.mesh
-//               ex11 -m ../data/square-disc-surf.mesh
-//               ex11 -m ../data/inline-segment.mesh
-//               ex11 -m ../data/inline-quad.mesh
-//               ex11 -m ../data/inline-tri.mesh
-//               ex11 -m ../data/amr-quad.mesh
-//               ex11 -m ../data/amr-hex.mesh
-//               ex11 -m ../data/mobius-strip.mesh -n 8
-//
-// Description:  This example code demonstrates the use of MFEM to solve the
-//               eigenvalue problem -Delta u = lambda u with homogeneous
-//               Dirichlet boundary conditions.
-//
-//               We compute a number of the lowest eigenmodes by discretizing
-//               the Laplacian and Mass operators using a FE space of the
-//               specified order, or an isoparametric/isogeometric space if
-//               order < 1 (quadratic for quadratic curvilinear mesh, NURBS for
-//               NURBS mesh, etc.)
-//
-//               The example highlights the use of the ARPACK eigenvalue solver
-//               (regular inverse mode). Reusing a single GLVis visualization
-//               window for multiple eigenfunctions is also illustrated.
-//
-//               We recommend viewing Example 1 before viewing this example.
-
-#include "mfem.hpp"
-#include <fstream>
-#include <iostream>
-
-using namespace std;
-using namespace mfem;
-
-int main(int argc, char *argv[])
-{
-   // 1. Parse command-line options.
-   const char *mesh_file = "../../data/star.mesh";
-   int ser_ref_levels = 1;
-   int order = 1;
-   int nev = 5;
-   double dbc_eig = 1e3;
-   bool visualization = 1;
-
-   OptionsParser args(argc, argv);
-   args.AddOption(&mesh_file, "-m", "--mesh",
-                  "Mesh file to use.");
-   args.AddOption(&ser_ref_levels, "-rs", "--refine-serial",
-                  "Number of times to refine the mesh uniformly in serial.");
-   args.AddOption(&order, "-o", "--order",
-                  "Finite element order (polynomial degree) or -1 for"
-                  " isoparametric space.");
-   args.AddOption(&nev, "-n", "--num-eigs",
-                  "Number of desired eigenmodes.");
-   args.AddOption(&dbc_eig, "-d", "--dbc-eig",
-                  "Eigenvalues associated with Dirichlet BC "
-                  "(should be larger than the maximum desired eigenvalue).");
-   args.AddOption(&visualization, "-vis", "--visualization", "-no-vis",
-                  "--no-visualization",
-                  "Enable or disable GLVis visualization.");
-   args.Parse();
-   if (!args.Good())
-   {
-      args.PrintUsage(cout);
-      return 1;
-   }
-   args.PrintOptions(cout);
-
-   // 2. Read the (serial) mesh from the given mesh file on all processors. We
-   //    can handle triangular, quadrilateral, tetrahedral, hexahedral, surface
-   //    and volume meshes with the same code.
-   Mesh *mesh;
-   ifstream imesh(mesh_file);
-   if (!imesh)
-   {
-      cerr << "\nCan not open mesh file: " << mesh_file << '\n' << endl;
-      return 2;
-   }
-   mesh = new Mesh(imesh, 1, 1);
-   imesh.close();
-   int dim = mesh->Dimension();
-
-   // 3. Refine the serial mesh on all processors to increase the resolution. In
-   //    this example we do 'ref_levels' of uniform refinement (2 by default, or
-   //    specified on the command line with -rs). 
-   for (int lev = 0; lev < ser_ref_levels; lev++)
-   {
-      mesh->UniformRefinement();
-   }
-
-   // 4. Define a finite element space on the mesh. Here we
-   //    use continuous Lagrange finite elements of the specified order. If
-   //    order < 1, we instead use an isoparametric/isogeometric space.
-   FiniteElementCollection *fec;
-   if (order > 0)
-   {
-      fec = new H1_FECollection(order, dim);
-   }
-   else if (mesh->GetNodes())
-   {
-      fec = mesh->GetNodes()->OwnFEC();
-   }
-   else
-   {
-      fec = new H1_FECollection(order = 1, dim);
-   }
-   FiniteElementSpace *fespace = new FiniteElementSpace(mesh, fec);
-   int size = fespace->GetVSize();
-
-   cout << "Number of unknowns: " << size << endl;
-
-   // 5. Set up the parallel bilinear forms a(.,.) and m(.,.) on the finite
-   //    element space. The first corresponds to the Laplacian operator -Delta,
-   //    while the second is a simple mass matrix needed on the right hand side
-   //    of the generalized eigenvalue problem below. The boundary conditions
-   //    are implemented by elimination with special values on the diagonal to
-   //    shift the Dirichlet eigenvalues out of the computational range. After
-   //    serial and parallel assembly we extract the corresponding parallel
-   //    matrices A and M.
-   ConstantCoefficient one(1.0);
-   Array<int> ess_bdr;
-   if (mesh->bdr_attributes.Size())
-   {
-      ess_bdr.SetSize(mesh->bdr_attributes.Max());
-      ess_bdr = 1;
-   }
-
-   BilinearForm *a = new BilinearForm(fespace);
-   a->AddDomainIntegrator(new DiffusionIntegrator(one));
-   if (mesh->bdr_attributes.Size() == 0)
-   {
-      // Add a mass term if the mesh has no boundary, e.g. periodic mesh or
-      // closed surface.
-      a->AddDomainIntegrator(new MassIntegrator(one));
-   }
-   a->Assemble();
-   if (mesh->bdr_attributes.Size() != 0)
-   {
-      a->EliminateEssentialBCDiag(ess_bdr, dbc_eig);
-   }
-   a->Finalize();
-
-   BilinearForm *m = new BilinearForm(fespace);
-   m->AddDomainIntegrator(new MassIntegrator(one));
-   m->Assemble();
-   if (mesh->bdr_attributes.Size() != 0)
-   {
-      // shift the eigenvalue corresponding to eliminated dofs to a large value
-      m->EliminateEssentialBCDiag(ess_bdr, 1.0);
-   }
-   m->Finalize();
-
-   // 6. Define and configure the SPECTRA eigensolver and solve problem
-   SpectraEigenSolver spectra;
-
-   spectra.SetNumModes(nev)
-      .SetKrylov(10)
-      .SetMaxIter(5000)
-      .SetTol(1e-5)
-      .SetOperators(*a, *m)
-      .Solve();
-
-   Eigen::VectorXd eigenvalues = spectra.GetEigenvalues(nev);
-
-   // 7. Define a grid function to represent each of the eigenmodes returned by the solver.
-   
-   GridFunction x(fespace);
-
-   // 8. Save the refined mesh and the modes in parallel. 
-   //    This output can be viewed later using GLVis: "glvis -np <np> -m mesh -g mode"
-   {
-      ostringstream mesh_name, mode_name;
-      mesh_name << "ex11.mesh";
-
-      ofstream mesh_ofs(mesh_name.str().c_str());
-      mesh_ofs.precision(8);
-      mesh->Print(mesh_ofs);
-
-      for (int i = 0; i < nev; i++) {
-         // conver Eigen Vector to MFEM Vector
-         Vector eigenvector = VectorConverter<double>::from(spectra.GetEigenvector(i));
-         
-         // convert eigenvector from Vector to GridFunction
-         x = eigenvector;
-
-         mode_name << "mode_" << setfill('0') << setw(2) << i;
-
-         ofstream mode_ofs(mode_name.str().c_str());
-         mode_ofs.precision(8);
-         x.Save(mode_ofs);
-         mode_name.str("");
-      }
-   }
-
-   // 10. Send the solution by socket to a GLVis server.
-   if (visualization)
-   {
-      char vishost[] = "localhost";
-      int  visport   = 19916;
-      socketstream mode_sock(vishost, visport);
-      mode_sock.precision(8);
-
-      for (int i=0; i<nev; i++)
-      {
-         cout << "Eigenmode " << i+1 << '/' << nev
-              << ", Lambda = " << eigenvalues[i] << endl;
-
-         // convert eigenvector from HypreParVector to ParGridFunction
-         Vector eigenvector = VectorConverter<double>::from(spectra.GetEigenvector(i));
-         x = eigenvector;
-
-         mode_sock << "solution\n" << *mesh << x << flush
-                   << "window_title 'Eigenmode " << i+1 << '/' << nev
-                   << ", Lambda = " << eigenvalues[i] << "'" << endl;
-
-         char c;
-         cout << "press (q)uit or (c)ontinue --> " << flush;
-         cin >> c;
-
-         if (c != 'c')
-         {
-            break;
-         }
-      }
-      mode_sock.close();
-   }
-
-   // 10. Free the used memory.
-   delete m;
-   delete a;
-
-   delete fespace;
-   if (order > 0)
-   {
-      delete fec;
-   }
-   delete mesh;
-
-   return 0;
-}
@@ -1,67 +0,0 @@
-# Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-# LICENSE and NOTICE for details. LLNL-CODE-806117.
-#
-# This file is part of the MFEM library. For more information and source code
-# availability visit https://mfem.org.
-#
-# MFEM is free software; you can redistribute it and/or modify it under the
-# terms of the BSD-3 license. We welcome feedback and contributions, see file
-# CONTRIBUTING.md for details.
-
-# Use the MFEM build directory
-MFEM_DIR ?= ../..
-MFEM_BUILD_DIR ?= ../..
-SRC = $(if $(MFEM_DIR:../..=),$(MFEM_DIR)/examples/spectra/,)
-CONFIG_MK = $(MFEM_BUILD_DIR)/config/config.mk
-# Use the MFEM install directory
-# MFEM_INSTALL_DIR = ../../mfem
-# CONFIG_MK = $(MFEM_INSTALL_DIR)/share/mfem/config.mk
-
-MFEM_LIB_FILE = mfem_is_not_built
-include $(CONFIG_MK)
-
-SEQ_EXAMPLES = ex11
-PAR_EXAMPLES = 
-ifeq ($(MFEM_USE_MPI),NO)
-   EXAMPLES = $(SEQ_EXAMPLES)
-else
-   EXAMPLES = $(PAR_EXAMPLES)
-endif
-RC_FILES = $(patsubst $(SRC)%,%,$(wildcard $(SRC)rc_*))
-
-.SUFFIXES:
-.SUFFIXES: .o .cpp .mk
-.PHONY: all clean clean-build clean-exec
-
-# Remove built-in rule
-%: %.cpp
-
-# Replace the default implicit rule for *.cpp files
-%: $(SRC)%.cpp $(MFEM_LIB_FILE) $(CONFIG_MK)
-	$(MFEM_CXX) $(MFEM_FLAGS) $< -o $@ $(MFEM_LIBS)
-
-all: $(EXAMPLES)
-
-# Examples depend on their corresponding rc_* files:
-make-rc-rule = $(1): | $(filter rc_$(1)%,$(RC_FILES))
-$(foreach ex,$(EXAMPLES),$(eval $(call make-rc-rule,$(ex))))
-
-# Rules to copy the rc_* files when building out-of-source:
-ifneq ($(SRC),)
-$(RC_FILES): %: $(SRC)%
-	cp -pf $(<) .
-endif
-
-# Generate an error message if the MFEM library is not built and exit
-$(MFEM_LIB_FILE):
-	$(error The MFEM library is not built)
-
-clean: clean-build clean-exec
-
-clean-build:
-	rm -f *.o *~ $(SEQ_EXAMPLES) $(PAR_EXAMPLES)
-	rm -rf *.dSYM *.TVD.*breakpoints
-
-clean-exec:
-	@rm -rf *.mesh mode_*
@@ -282,10 +282,6 @@ int main(int argc, char *argv[])
   superlu->SetOperator(*SLU_A);
   superlu->SetPrintStatistics(true);
   superlu->Mult(B, X);
-   superlu->DismantleGrid();
-
-   delete SLU_A;
-   delete superlu;

   // 14. Recover the parallel grid function corresponding to X. This is the
   //     local finite element solution on each processor.
@@ -39,7 +39,6 @@ set(SRCS
  complex_fem.cpp
  convergence.cpp
  datacollection.cpp
-  doftrans.cpp
  eltrans.cpp
  estimators.cpp
  fe.cpp
@@ -106,7 +105,6 @@ set(SRCS
  tmop/tmop_pa_w3.cpp
  tmop/tmop_pa_w3_c0.cpp
  tmop_tools.cpp
-  tmop_amr.cpp
  gslib.cpp
  transfer.cpp
  lor.cpp
@@ -120,7 +118,6 @@ set(HDRS
  complex_fem.hpp
  convergence.hpp
  datacollection.hpp
-  doftrans.hpp
  eltrans.hpp
  estimators.hpp
  fe.hpp
@@ -167,7 +164,6 @@ set(HDRS
  tmop.hpp
  tmop/tmop_pa.hpp
  tmop_tools.hpp
-  tmop_amr.hpp
  gslib.hpp
  transfer.hpp
  lor.hpp
@@ -188,11 +184,6 @@ if (MFEM_USE_ADIOS2)
  list(APPEND HDRS adios2datacollection.hpp)
 endif()

-if (MFEM_USE_FMS)
-  list(APPEND SRCS fmsdatacollection.cpp fmsconvert.cpp)
-  list(APPEND HDRS fmsdatacollection.hpp fmsconvert.hpp)
-endif()
-
 if (MFEM_USE_MPI)
  list(APPEND SRCS
    pbilinearform.cpp
@@ -31,7 +31,7 @@ void BilinearForm::AllocMat()
   const Table &elem_dof = fes->GetElementToDofTable();
   Table dof_dof;

-   if (interior_face_integs.Size() > 0)
+   if (fbfi.Size() > 0)
   {
      // the sparsity pattern is defined from the map: face->element->dof
      Table face_dof, dof_face;
@@ -99,15 +99,15 @@ BilinearForm::BilinearForm (FiniteElementSpace * f, BilinearForm * bf, int ps)
   ext = NULL;

   // Copy the pointers to the integrators
-   domain_integs = bf->domain_integs;
+   dbfi = bf->dbfi;

-   boundary_integs = bf->boundary_integs;
-   boundary_integs_marker = bf->boundary_integs_marker;
+   bbfi = bf->bbfi;
+   bbfi_marker = bf->bbfi_marker;

-   interior_face_integs = bf->interior_face_integs;
+   fbfi = bf->fbfi;

-   boundary_face_integs = bf->boundary_face_integs;
-   boundary_face_integs_marker = bf->boundary_face_integs_marker;
+   bfbfi = bf->bfbfi;
+   bfbfi_marker = bf->bfbfi_marker;

   AllocMat();
 }
@@ -234,47 +234,46 @@ void BilinearForm::Finalize (int skip_zeros)

 void BilinearForm::AddDomainIntegrator(BilinearFormIntegrator *bfi)
 {
-   domain_integs.Append(bfi);
-   domain_integs_marker.Append(NULL); // NULL marker means apply everywhere
+   dbfi.Append(bfi);
+   dbfi_marker.Append(NULL); // NULL marker means apply everywhere
 }

 void BilinearForm::AddDomainIntegrator(BilinearFormIntegrator *bfi,
                                       Array<int> &elem_marker)
 {
-   domain_integs.Append(bfi);
-   domain_integs_marker.Append(&elem_marker);
+   dbfi.Append(bfi);
+   dbfi_marker.Append(&elem_marker);
 }

 void BilinearForm::AddBoundaryIntegrator (BilinearFormIntegrator * bfi)
 {
-   boundary_integs.Append (bfi);
-   boundary_integs_marker.Append(NULL); // NULL marker means apply everywhere
+   bbfi.Append (bfi);
+   bbfi_marker.Append(NULL); // NULL marker means apply everywhere
 }

 void BilinearForm::AddBoundaryIntegrator (BilinearFormIntegrator * bfi,
                                          Array<int> &bdr_marker)
 {
-   boundary_integs.Append (bfi);
-   boundary_integs_marker.Append(&bdr_marker);
+   bbfi.Append (bfi);
+   bbfi_marker.Append(&bdr_marker);
 }

 void BilinearForm::AddInteriorFaceIntegrator(BilinearFormIntegrator * bfi)
 {
-   interior_face_integs.Append (bfi);
+   fbfi.Append (bfi);
 }

 void BilinearForm::AddBdrFaceIntegrator(BilinearFormIntegrator *bfi)
 {
-   boundary_face_integs.Append(bfi);
-   // NULL marker means apply everywhere
-   boundary_face_integs_marker.Append(NULL);
+   bfbfi.Append(bfi);
+   bfbfi_marker.Append(NULL); // NULL marker means apply everywhere
 }

 void BilinearForm::AddBdrFaceIntegrator(BilinearFormIntegrator *bfi,
                                        Array<int> &bdr_marker)
 {
-   boundary_face_integs.Append(bfi);
-   boundary_face_integs_marker.Append(&bdr_marker);
+   bfbfi.Append(bfi);
+   bfbfi_marker.Append(&bdr_marker);
 }

 void BilinearForm::ComputeElementMatrix(int i, DenseMatrix &elmat)
@@ -286,14 +285,14 @@ void BilinearForm::ComputeElementMatrix(int i, DenseMatrix &elmat)
      return;
   }

-   if (domain_integs.Size())
+   if (dbfi.Size())
   {
      const FiniteElement &fe = *fes->GetFE(i);
      ElementTransformation *eltrans = fes->GetElementTransformation(i);
-      domain_integs[0]->AssembleElementMatrix(fe, *eltrans, elmat);
-      for (int k = 1; k < domain_integs.Size(); k++)
+      dbfi[0]->AssembleElementMatrix(fe, *eltrans, elmat);
+      for (int k = 1; k < dbfi.Size(); k++)
      {
-         domain_integs[k]->AssembleElementMatrix(fe, *eltrans, elemmat);
+         dbfi[k]->AssembleElementMatrix(fe, *eltrans, elemmat);
         elmat += elemmat;
      }
   }
@@ -307,14 +306,14 @@ void BilinearForm::ComputeElementMatrix(int i, DenseMatrix &elmat)

 void BilinearForm::ComputeBdrElementMatrix(int i, DenseMatrix &elmat)
 {
-   if (boundary_integs.Size())
+   if (bbfi.Size())
   {
      const FiniteElement &be = *fes->GetBE(i);
      ElementTransformation *eltrans = fes->GetBdrElementTransformation(i);
-      boundary_integs[0]->AssembleElementMatrix(be, *eltrans, elmat);
-      for (int k = 1; k < boundary_integs.Size(); k++)
+      bbfi[0]->AssembleElementMatrix(be, *eltrans, elmat);
+      for (int k = 1; k < bbfi.Size(); k++)
      {
-         boundary_integs[k]->AssembleElementMatrix(be, *eltrans, elemmat);
+         bbfi[k]->AssembleElementMatrix(be, *eltrans, elemmat);
         elmat += elemmat;
      }
   }
@@ -391,7 +390,6 @@ void BilinearForm::Assemble(int skip_zeros)
   }

   ElementTransformation *eltrans;
-   DofTransformation * doftrans;
   Mesh *mesh = fes -> GetMesh();
   DenseMatrix elmat, *elmat_p;

@@ -409,14 +407,13 @@ void BilinearForm::Assemble(int skip_zeros)
   }
 #endif

-   if (domain_integs.Size())
+   if (dbfi.Size())
   {
-      for (int k = 0; k < domain_integs.Size(); k++)
+      for (int k = 0; k < dbfi.Size(); k++)
      {
-         if (domain_integs_marker[k] != NULL)
+         if (dbfi_marker[k] != NULL)
         {
-            MFEM_VERIFY(mesh->attributes.Size() ==
-                        domain_integs_marker[k]->Size(),
+            MFEM_VERIFY(mesh->attributes.Size() == dbfi_marker[k]->Size(),
                        "invalid element marker for domain integrator #"
                        << k << ", counting from zero");
         }
@@ -425,7 +422,7 @@ void BilinearForm::Assemble(int skip_zeros)
      for (int i = 0; i < fes -> GetNE(); i++)
      {
         int elem_attr = fes->GetMesh()->GetAttribute(i);
-         doftrans = fes->GetElementVDofs(i, vdofs);
+         fes->GetElementVDofs(i, vdofs);
         if (element_matrices)
         {
            elmat_p = &(*element_matrices)(i);
@@ -433,14 +430,14 @@ void BilinearForm::Assemble(int skip_zeros)
         else
         {
            elmat.SetSize(0);
-            for (int k = 0; k < domain_integs.Size(); k++)
+            for (int k = 0; k < dbfi.Size(); k++)
            {
-               if ( domain_integs_marker[k] == NULL ||
-                    (*(domain_integs_marker[k]))[elem_attr-1] == 1)
+               if ( dbfi_marker[k] == NULL ||
+                    (*(dbfi_marker[k]))[elem_attr-1] == 1)
               {
                  const FiniteElement &fe = *fes->GetFE(i);
                  eltrans = fes->GetElementTransformation(i);
-                  domain_integs[k]->AssembleElementMatrix(fe, *eltrans, elemmat);
+                  dbfi[k]->AssembleElementMatrix(fe, *eltrans, elemmat);
                  if (elmat.Size() == 0)
                  {
                     elmat = elemmat;
@@ -459,11 +456,6 @@ void BilinearForm::Assemble(int skip_zeros)
            {
               elmat_p = &elmat;
            }
-            if (doftrans)
-            {
-               doftrans->TransformDual(elmat);
-            }
-            elmat_p = &elmat;
         }
         if (static_cond)
         {
@@ -480,20 +472,20 @@ void BilinearForm::Assemble(int skip_zeros)
      }
   }

-   if (boundary_integs.Size())
+   if (bbfi.Size())
   {
      // Which boundary attributes need to be processed?
      Array<int> bdr_attr_marker(mesh->bdr_attributes.Size() ?
                                 mesh->bdr_attributes.Max() : 0);
      bdr_attr_marker = 0;
-      for (int k = 0; k < boundary_integs.Size(); k++)
+      for (int k = 0; k < bbfi.Size(); k++)
      {
-         if (boundary_integs_marker[k] == NULL)
+         if (bbfi_marker[k] == NULL)
         {
            bdr_attr_marker = 1;
            break;
         }
-         Array<int> &bdr_marker = *boundary_integs_marker[k];
+         Array<int> &bdr_marker = *bbfi_marker[k];
         MFEM_ASSERT(bdr_marker.Size() == bdr_attr_marker.Size(),
                     "invalid boundary marker for boundary integrator #"
                     << k << ", counting from zero");
@@ -509,47 +501,42 @@ void BilinearForm::Assemble(int skip_zeros)
         if (bdr_attr_marker[bdr_attr-1] == 0) { continue; }

         const FiniteElement &be = *fes->GetBE(i);
-         doftrans = fes -> GetBdrElementVDofs (i, vdofs);
+         fes -> GetBdrElementVDofs (i, vdofs);
         eltrans = fes -> GetBdrElementTransformation (i);
         int k = 0;
-         for (; k < boundary_integs.Size(); k++)
+         for (; k < bbfi.Size(); k++)
         {
-            if (boundary_integs_marker[k] &&
-                (*boundary_integs_marker[k])[bdr_attr-1] == 0) { continue; }
+            if (bbfi_marker[k] &&
+                (*bbfi_marker[k])[bdr_attr-1] == 0) { continue; }

-            boundary_integs[k]->AssembleElementMatrix(be, *eltrans, elmat);
+            bbfi[k]->AssembleElementMatrix(be, *eltrans, elmat);
            k++;
            break;
         }
-         for (; k < boundary_integs.Size(); k++)
+         for (; k < bbfi.Size(); k++)
         {
-            if (boundary_integs_marker[k] &&
-                (*boundary_integs_marker[k])[bdr_attr-1] == 0) { continue; }
+            if (bbfi_marker[k] &&
+                (*bbfi_marker[k])[bdr_attr-1] == 0) { continue; }

-            boundary_integs[k]->AssembleElementMatrix(be, *eltrans, elemmat);
+            bbfi[k]->AssembleElementMatrix(be, *eltrans, elemmat);
            elmat += elemmat;
         }
-         if (doftrans)
-         {
-            doftrans->TransformDual(elmat);
-         }
-         elmat_p = &elmat;
         if (!static_cond)
         {
-            mat->AddSubMatrix(vdofs, vdofs, *elmat_p, skip_zeros);
+            mat->AddSubMatrix(vdofs, vdofs, elmat, skip_zeros);
            if (hybridization)
            {
-               hybridization->AssembleBdrMatrix(i, *elmat_p);
+               hybridization->AssembleBdrMatrix(i, elmat);
            }
         }
         else
         {
-            static_cond->AssembleBdrMatrix(i, *elmat_p);
+            static_cond->AssembleBdrMatrix(i, elmat);
         }
      }
   }

-   if (interior_face_integs.Size())
+   if (fbfi.Size())
   {
      FaceElementTransformations *tr;
      Array<int> vdofs2;
@@ -563,19 +550,18 @@ void BilinearForm::Assemble(int skip_zeros)
            fes -> GetElementVDofs (tr -> Elem1No, vdofs);
            fes -> GetElementVDofs (tr -> Elem2No, vdofs2);
            vdofs.Append (vdofs2);
-            for (int k = 0; k < interior_face_integs.Size(); k++)
+            for (int k = 0; k < fbfi.Size(); k++)
            {
-               interior_face_integs[k]->
-               AssembleFaceMatrix(*fes->GetFE(tr->Elem1No),
-                                  *fes->GetFE(tr->Elem2No),
-                                  *tr, elemmat);
+               fbfi[k] -> AssembleFaceMatrix (*fes -> GetFE (tr -> Elem1No),
+                                              *fes -> GetFE (tr -> Elem2No),
+                                              *tr, elemmat);
               mat -> AddSubMatrix (vdofs, vdofs, elemmat, skip_zeros);
            }
         }
      }
   }

-   if (boundary_face_integs.Size())
+   if (bfbfi.Size())
   {
      FaceElementTransformations *tr;
      const FiniteElement *fe1, *fe2;
@@ -584,14 +570,14 @@ void BilinearForm::Assemble(int skip_zeros)
      Array<int> bdr_attr_marker(mesh->bdr_attributes.Size() ?
                                 mesh->bdr_attributes.Max() : 0);
      bdr_attr_marker = 0;
-      for (int k = 0; k < boundary_face_integs.Size(); k++)
+      for (int k = 0; k < bfbfi.Size(); k++)
      {
-         if (boundary_face_integs_marker[k] == NULL)
+         if (bfbfi_marker[k] == NULL)
         {
            bdr_attr_marker = 1;
            break;
         }
-         Array<int> &bdr_marker = *boundary_face_integs_marker[k];
+         Array<int> &bdr_marker = *bfbfi_marker[k];
         MFEM_ASSERT(bdr_marker.Size() == bdr_attr_marker.Size(),
                     "invalid boundary marker for boundary face integrator #"
                     << k << ", counting from zero");
@@ -615,14 +601,12 @@ void BilinearForm::Assemble(int skip_zeros)
            // but we can't dereference a NULL pointer, and we don't want to
            // actually make a fake element.
            fe2 = fe1;
-            for (int k = 0; k < boundary_face_integs.Size(); k++)
+            for (int k = 0; k < bfbfi.Size(); k++)
            {
-               if (boundary_face_integs_marker[k] &&
-                   (*boundary_face_integs_marker[k])[bdr_attr-1] == 0)
-               { continue; }
+               if (bfbfi_marker[k] &&
+                   (*bfbfi_marker[k])[bdr_attr-1] == 0) { continue; }

-               boundary_face_integs[k] -> AssembleFaceMatrix (*fe1, *fe2, *tr,
-                                                              elemmat);
+               bfbfi[k] -> AssembleFaceMatrix (*fe1, *fe2, *tr, elemmat);
               mat -> AddSubMatrix (vdofs, vdofs, elemmat, skip_zeros);
            }
         }
@@ -736,8 +720,8 @@ void BilinearForm::FormLinearSystem(const Array<int> &ess_tdof_list, Vector &x,
      {
         // A, X and B point to the same data as mat, x and b
         EliminateVDofsInRHS(ess_tdof_list, x, b);
-         X.MakeRef(x, 0, x.Size());
-         B.MakeRef(b, 0, b.Size());
+         X.NewMemoryAndSize(x.GetMemory(), x.Size(), false);
+         B.NewMemoryAndSize(b.GetMemory(), b.Size(), false);
         if (!copy_interior) { X.SetSubVectorComplement(ess_tdof_list, 0.0); }
      }
   }
@@ -873,7 +857,7 @@ void BilinearForm::RecoverFEMSolution(const Vector &X,

 void BilinearForm::ComputeElementMatrices()
 {
-   if (element_matrices || domain_integs.Size() == 0 || fes->GetNE() == 0)
+   if (element_matrices || dbfi.Size() == 0 || fes->GetNE() == 0)
   {
      return;
   }
@@ -902,11 +886,11 @@ void BilinearForm::ComputeElementMatrices()
 #endif
      fes->GetElementTransformation(i, &eltrans);

-      domain_integs[0]->AssembleElementMatrix(fe, eltrans, elmat);
-      for (int k = 1; k < domain_integs.Size(); k++)
+      dbfi[0]->AssembleElementMatrix(fe, eltrans, elmat);
+      for (int k = 1; k < dbfi.Size(); k++)
      {
         // note: some integrators may not be thread-safe
-         domain_integs[k]->AssembleElementMatrix(fe, eltrans, tmp);
+         dbfi[k]->AssembleElementMatrix(fe, eltrans, tmp);
         elmat += tmp;
      }
      elmat.ClearExternalData();
@@ -1121,12 +1105,10 @@ BilinearForm::~BilinearForm()
   if (!extern_bfs)
   {
      int k;
-      for (k=0; k < domain_integs.Size(); k++) { delete domain_integs[k]; }
-      for (k=0; k < boundary_integs.Size(); k++) { delete boundary_integs[k]; }
-      for (k=0; k < interior_face_integs.Size(); k++)
-      { delete interior_face_integs[k]; }
-      for (k=0; k < boundary_face_integs.Size(); k++)
-      { delete boundary_face_integs[k]; }
+      for (k=0; k < dbfi.Size(); k++) { delete dbfi[k]; }
+      for (k=0; k < bbfi.Size(); k++) { delete bbfi[k]; }
+      for (k=0; k < fbfi.Size(); k++) { delete fbfi[k]; }
+      for (k=0; k < bfbfi.Size(); k++) { delete bfbfi[k]; }
   }

   delete ext;
@@ -1159,13 +1141,13 @@ MixedBilinearForm::MixedBilinearForm (FiniteElementSpace *tr_fes,
   ext = NULL;

   // Copy the pointers to the integrators
-   domain_integs = mbf->domain_integs;
-   boundary_integs = mbf->boundary_integs;
-   trace_face_integs = mbf->trace_face_integs;
-   boundary_trace_face_integs = mbf->boundary_trace_face_integs;
+   dbfi = mbf->dbfi;
+   bbfi = mbf->bbfi;
+   tfbfi = mbf->tfbfi;
+   btfbfi = mbf->btfbfi;

-   boundary_integs_marker = mbf->boundary_integs_marker;
-   boundary_trace_face_integs_marker = mbf->boundary_trace_face_integs_marker;
+   bbfi_marker = mbf->bbfi_marker;
+   btfbfi_marker = mbf->btfbfi_marker;

   assembly = AssemblyLevel::LEGACY;
   ext = NULL;
@@ -1254,8 +1236,7 @@ MatrixInverse * MixedBilinearForm::Inverse() const
 {
   if (assembly != AssemblyLevel::LEGACY)
   {
-      MFEM_WARNING("MixedBilinearForm::Inverse not possible with this "
-                   "assembly level!");
+      MFEM_WARNING("MixedBilinearForm::Inverse not possible with this assembly level!");
      return NULL;
   }
   else
@@ -1286,39 +1267,38 @@ void MixedBilinearForm::GetBlocks(Array2D<SparseMatrix *> &blocks) const

 void MixedBilinearForm::AddDomainIntegrator (BilinearFormIntegrator * bfi)
 {
-   domain_integs.Append (bfi);
+   dbfi.Append (bfi);
 }

 void MixedBilinearForm::AddBoundaryIntegrator (BilinearFormIntegrator * bfi)
 {
-   boundary_integs.Append (bfi);
-   boundary_integs_marker.Append(NULL); // NULL marker means apply everywhere
+   bbfi.Append (bfi);
+   bbfi_marker.Append(NULL); // NULL marker means apply everywhere
 }

 void MixedBilinearForm::AddBoundaryIntegrator (BilinearFormIntegrator * bfi,
                                               Array<int> &bdr_marker)
 {
-   boundary_integs.Append (bfi);
-   boundary_integs_marker.Append(&bdr_marker);
+   bbfi.Append (bfi);
+   bbfi_marker.Append(&bdr_marker);
 }

 void MixedBilinearForm::AddTraceFaceIntegrator (BilinearFormIntegrator * bfi)
 {
-   trace_face_integs.Append (bfi);
+   tfbfi.Append (bfi);
 }

 void MixedBilinearForm::AddBdrTraceFaceIntegrator(BilinearFormIntegrator *bfi)
 {
-   boundary_trace_face_integs.Append(bfi);
-   // NULL marker means apply everywhere
-   boundary_trace_face_integs_marker.Append(NULL);
+   btfbfi.Append(bfi);
+   btfbfi_marker.Append(NULL); // NULL marker means apply everywhere
 }

 void MixedBilinearForm::AddBdrTraceFaceIntegrator(BilinearFormIntegrator *bfi,
                                                  Array<int> &bdr_marker)
 {
-   boundary_trace_face_integs.Append(bfi);
-   boundary_trace_face_integs_marker.Append(&bdr_marker);
+   btfbfi.Append(bfi);
+   btfbfi_marker.Append(&bdr_marker);
 }

 void MixedBilinearForm::Assemble (int skip_zeros)
@@ -1329,10 +1309,9 @@ void MixedBilinearForm::Assemble (int skip_zeros)
      return;
   }

+   Array<int> tr_vdofs, te_vdofs;
   ElementTransformation *eltrans;
-   DofTransformation * dom_dof_trans;
-   DofTransformation * ran_dof_trans;
-   DenseMatrix elmat;
+   DenseMatrix elemmat;

   Mesh *mesh = test_fes -> GetMesh();

@@ -1341,45 +1320,37 @@ void MixedBilinearForm::Assemble (int skip_zeros)
      mat = new SparseMatrix(height, width);
   }

-   if (domain_integs.Size())
+   if (dbfi.Size())
   {
      for (int i = 0; i < test_fes -> GetNE(); i++)
      {
-         dom_dof_trans = trial_fes -> GetElementVDofs (i, trial_vdofs);
-         ran_dof_trans = test_fes  -> GetElementVDofs (i, test_vdofs);
+         trial_fes -> GetElementVDofs (i, tr_vdofs);
+         test_fes  -> GetElementVDofs (i, te_vdofs);
         eltrans = test_fes -> GetElementTransformation (i);
-
-         elmat.SetSize(test_vdofs.Size(), trial_vdofs.Size());
-         elmat = 0.0;
-         for (int k = 0; k < domain_integs.Size(); k++)
+         for (int k = 0; k < dbfi.Size(); k++)
         {
-            domain_integs[k] -> AssembleElementMatrix2 (*trial_fes -> GetFE(i),
-                                                        *test_fes  -> GetFE(i),
-                                                        *eltrans, elemmat);
-            elmat += elemmat;
+            dbfi[k] -> AssembleElementMatrix2 (*trial_fes -> GetFE(i),
+                                               *test_fes  -> GetFE(i),
+                                               *eltrans, elemmat);
+            mat -> AddSubMatrix (te_vdofs, tr_vdofs, elemmat, skip_zeros);
         }
-         if (ran_dof_trans || dom_dof_trans)
-         {
-            TransformDual(ran_dof_trans, dom_dof_trans, elmat);
-         }
-         mat -> AddSubMatrix (test_vdofs, trial_vdofs, elmat, skip_zeros);
      }
   }

-   if (boundary_integs.Size())
+   if (bbfi.Size())
   {
      // Which boundary attributes need to be processed?
      Array<int> bdr_attr_marker(mesh->bdr_attributes.Size() ?
                                 mesh->bdr_attributes.Max() : 0);
      bdr_attr_marker = 0;
-      for (int k = 0; k < boundary_integs.Size(); k++)
+      for (int k = 0; k < bbfi.Size(); k++)
      {
-         if (boundary_integs_marker[k] == NULL)
+         if (bbfi_marker[k] == NULL)
         {
            bdr_attr_marker = 1;
            break;
         }
-         Array<int> &bdr_marker = *boundary_integs_marker[k];
+         Array<int> &bdr_marker = *bbfi_marker[k];
         MFEM_ASSERT(bdr_marker.Size() == bdr_attr_marker.Size(),
                     "invalid boundary marker for boundary integrator #"
                     << k << ", counting from zero");
@@ -1394,48 +1365,40 @@ void MixedBilinearForm::Assemble (int skip_zeros)
         const int bdr_attr = mesh->GetBdrAttribute(i);
         if (bdr_attr_marker[bdr_attr-1] == 0) { continue; }

-         dom_dof_trans = trial_fes -> GetBdrElementVDofs (i, trial_vdofs);
-         ran_dof_trans = test_fes  -> GetBdrElementVDofs (i, test_vdofs);
+         trial_fes -> GetBdrElementVDofs (i, tr_vdofs);
+         test_fes  -> GetBdrElementVDofs (i, te_vdofs);
         eltrans = test_fes -> GetBdrElementTransformation (i);
-
-         elmat.SetSize(test_vdofs.Size(), trial_vdofs.Size());
-         elmat = 0.0;
-         for (int k = 0; k < boundary_integs.Size(); k++)
+         for (int k = 0; k < bbfi.Size(); k++)
         {
-            if (boundary_integs_marker[k] &&
-                (*boundary_integs_marker[k])[bdr_attr-1] == 0) { continue; }
+            if (bbfi_marker[k] &&
+                (*bbfi_marker[k])[bdr_attr-1] == 0) { continue; }

-            boundary_integs[k]->AssembleElementMatrix2 (*trial_fes -> GetBE(i),
-                                                        *test_fes  -> GetBE(i),
-                                                        *eltrans, elemmat);
-            elmat += elemmat;
+            bbfi[k] -> AssembleElementMatrix2 (*trial_fes -> GetBE(i),
+                                               *test_fes  -> GetBE(i),
+                                               *eltrans, elemmat);
+            mat -> AddSubMatrix (te_vdofs, tr_vdofs, elemmat, skip_zeros);
         }
-         if (ran_dof_trans || dom_dof_trans)
-         {
-            TransformDual(ran_dof_trans, dom_dof_trans, elmat);
-         }
-         mat -> AddSubMatrix (test_vdofs, trial_vdofs, elmat, skip_zeros);
      }
   }

-   if (trace_face_integs.Size())
+   if (tfbfi.Size())
   {
      FaceElementTransformations *ftr;
-      Array<int> test_vdofs2;
+      Array<int> te_vdofs2;
      const FiniteElement *trial_face_fe, *test_fe1, *test_fe2;

      int nfaces = mesh->GetNumFaces();
      for (int i = 0; i < nfaces; i++)
      {
         ftr = mesh->GetFaceElementTransformations(i);
-         trial_fes->GetFaceVDofs(i, trial_vdofs);
-         test_fes->GetElementVDofs(ftr->Elem1No, test_vdofs);
+         trial_fes->GetFaceVDofs(i, tr_vdofs);
+         test_fes->GetElementVDofs(ftr->Elem1No, te_vdofs);
         trial_face_fe = trial_fes->GetFaceElement(i);
         test_fe1 = test_fes->GetFE(ftr->Elem1No);
         if (ftr->Elem2No >= 0)
         {
-            test_fes->GetElementVDofs(ftr->Elem2No, test_vdofs2);
-            test_vdofs.Append(test_vdofs2);
+            test_fes->GetElementVDofs(ftr->Elem2No, te_vdofs2);
+            te_vdofs.Append(te_vdofs2);
            test_fe2 = test_fes->GetFE(ftr->Elem2No);
         }
         else
@@ -1445,16 +1408,16 @@ void MixedBilinearForm::Assemble (int skip_zeros)
            // want to actually make a fake element.
            test_fe2 = test_fe1;
         }
-         for (int k = 0; k < trace_face_integs.Size(); k++)
+         for (int k = 0; k < tfbfi.Size(); k++)
         {
-            trace_face_integs[k]->AssembleFaceMatrix(*trial_face_fe, *test_fe1,
-                                                     *test_fe2, *ftr, elemmat);
-            mat->AddSubMatrix(test_vdofs, trial_vdofs, elemmat, skip_zeros);
+            tfbfi[k]->AssembleFaceMatrix(*trial_face_fe, *test_fe1, *test_fe2,
+                                         *ftr, elemmat);
+            mat->AddSubMatrix(te_vdofs, tr_vdofs, elemmat, skip_zeros);
         }
      }
   }

-   if (boundary_trace_face_integs.Size())
+   if (btfbfi.Size())
   {
      FaceElementTransformations *ftr;
      Array<int> te_vdofs2;
@@ -1464,17 +1427,17 @@ void MixedBilinearForm::Assemble (int skip_zeros)
      Array<int> bdr_attr_marker(mesh->bdr_attributes.Size() ?
                                 mesh->bdr_attributes.Max() : 0);
      bdr_attr_marker = 0;
-      for (int k = 0; k < boundary_trace_face_integs.Size(); k++)
+      for (int k = 0; k < btfbfi.Size(); k++)
      {
-         if (boundary_trace_face_integs_marker[k] == NULL)
+         if (btfbfi_marker[k] == NULL)
         {
            bdr_attr_marker = 1;
            break;
         }
-         Array<int> &bdr_marker = *boundary_trace_face_integs_marker[k];
+         Array<int> &bdr_marker = *btfbfi_marker[k];
         MFEM_ASSERT(bdr_marker.Size() == bdr_attr_marker.Size(),
-                     "invalid boundary marker for boundary trace face"
-                     "integrator #" << k << ", counting from zero");
+                     "invalid boundary marker for boundary trace face integrator #"
+                     << k << ", counting from zero");
         for (int i = 0; i < bdr_attr_marker.Size(); i++)
         {
            bdr_attr_marker[i] |= bdr_marker[i];
@@ -1489,25 +1452,22 @@ void MixedBilinearForm::Assemble (int skip_zeros)
         ftr = mesh->GetBdrFaceTransformations(i);
         if (ftr)
         {
-            trial_fes->GetFaceVDofs(ftr->ElementNo, trial_vdofs);
-            test_fes->GetElementVDofs(ftr->Elem1No, test_vdofs);
+            trial_fes->GetFaceVDofs(ftr->ElementNo, tr_vdofs);
+            test_fes->GetElementVDofs(ftr->Elem1No, te_vdofs);
            trial_face_fe = trial_fes->GetFaceElement(ftr->ElementNo);
            test_fe1 = test_fes->GetFE(ftr->Elem1No);
            // The test_fe2 object is really a dummy and not used on the
            // boundaries, but we can't dereference a NULL pointer, and we don't
            // want to actually make a fake element.
            test_fe2 = test_fe1;
-            for (int k = 0; k < boundary_trace_face_integs.Size(); k++)
+            for (int k = 0; k < btfbfi.Size(); k++)
            {
-               if (boundary_trace_face_integs_marker[k] &&
-                   (*boundary_trace_face_integs_marker[k])[bdr_attr-1] == 0)
-               { continue; }
+               if (btfbfi_marker[k] &&
+                   (*btfbfi_marker[k])[bdr_attr-1] == 0) { continue; }

-               boundary_trace_face_integs[k]->AssembleFaceMatrix(*trial_face_fe,
-                                                                 *test_fe1,
-                                                                 *test_fe2,
-                                                                 *ftr, elemmat);
-               mat->AddSubMatrix(test_vdofs, trial_vdofs, elemmat, skip_zeros);
+               btfbfi[k]->AssembleFaceMatrix(*trial_face_fe, *test_fe1, *test_fe2,
+                                             *ftr, elemmat);
+               mat->AddSubMatrix(te_vdofs, tr_vdofs, elemmat, skip_zeros);
            }
         }
      }
@@ -1597,17 +1557,15 @@ void MixedBilinearForm::ConformingAssemble()

 void MixedBilinearForm::ComputeElementMatrix(int i, DenseMatrix &elmat)
 {
-   if (domain_integs.Size())
+   if (dbfi.Size())
   {
      const FiniteElement &trial_fe = *trial_fes->GetFE(i);
      const FiniteElement &test_fe = *test_fes->GetFE(i);
      ElementTransformation *eltrans = test_fes->GetElementTransformation(i);
-      domain_integs[0]->AssembleElementMatrix2(trial_fe, test_fe, *eltrans,
-                                               elmat);
-      for (int k = 1; k < domain_integs.Size(); k++)
+      dbfi[0]->AssembleElementMatrix2(trial_fe, test_fe, *eltrans, elmat);
+      for (int k = 1; k < dbfi.Size(); k++)
      {
-         domain_integs[k]->AssembleElementMatrix2(trial_fe, test_fe, *eltrans,
-                                                  elemmat);
+         dbfi[k]->AssembleElementMatrix2(trial_fe, test_fe, *eltrans, elemmat);
         elmat += elemmat;
      }
   }
@@ -1622,17 +1580,15 @@ void MixedBilinearForm::ComputeElementMatrix(int i, DenseMatrix &elmat)

 void MixedBilinearForm::ComputeBdrElementMatrix(int i, DenseMatrix &elmat)
 {
-   if (boundary_integs.Size())
+   if (bbfi.Size())
   {
      const FiniteElement &trial_be = *trial_fes->GetBE(i);
      const FiniteElement &test_be = *test_fes->GetBE(i);
      ElementTransformation *eltrans = test_fes->GetBdrElementTransformation(i);
-      boundary_integs[0]->AssembleElementMatrix2(trial_be, test_be, *eltrans,
-                                                 elmat);
-      for (int k = 1; k < boundary_integs.Size(); k++)
+      bbfi[0]->AssembleElementMatrix2(trial_be, test_be, *eltrans, elmat);
+      for (int k = 1; k < bbfi.Size(); k++)
      {
-         boundary_integs[k]->AssembleElementMatrix2(trial_be, test_be, *eltrans,
-                                                    elemmat);
+         bbfi[k]->AssembleElementMatrix2(trial_be, test_be, *eltrans, elemmat);
         elmat += elemmat;
      }
   }
@@ -1732,10 +1688,10 @@ void MixedBilinearForm::EliminateTestDofs (const Array<int> &bdr_attr_is_ess)
      }
 }

-void MixedBilinearForm::FormRectangularSystemMatrix(
-   const Array<int> &trial_tdof_list,
-   const Array<int> &test_tdof_list,
-   OperatorHandle &A)
+void MixedBilinearForm::FormRectangularSystemMatrix(const Array<int>
+                                                    &trial_tdof_list,
+                                                    const Array<int> &test_tdof_list,
+                                                    OperatorHandle &A)

 {
   if (ext)
@@ -1773,17 +1729,17 @@ void MixedBilinearForm::FormRectangularSystemMatrix(
   A.Reset(mat, false);
 }

-void MixedBilinearForm::FormRectangularLinearSystem(
-   const Array<int> &trial_tdof_list,
-   const Array<int> &test_tdof_list,
-   Vector &x, Vector &b,
-   OperatorHandle &A,
-   Vector &X, Vector &B)
+void MixedBilinearForm::FormRectangularLinearSystem(const Array<int>
+                                                    &trial_tdof_list,
+                                                    const Array<int> &test_tdof_list,
+                                                    Vector &x, Vector &b,
+                                                    OperatorHandle &A,
+                                                    Vector &X, Vector &B)
 {
   if (ext)
   {
-      ext->FormRectangularLinearSystem(trial_tdof_list, test_tdof_list,
-                                       x, b, A, X, B);
+      ext->FormRectangularLinearSystem(trial_tdof_list, test_tdof_list, x, b, A, X,
+                                       B);
      return;
   }

@@ -1821,13 +1777,10 @@ MixedBilinearForm::~MixedBilinearForm()
   if (!extern_bfs)
   {
      int i;
-      for (i = 0; i < domain_integs.Size(); i++) { delete domain_integs[i]; }
-      for (i = 0; i < boundary_integs.Size(); i++)
-      { delete boundary_integs[i]; }
-      for (i = 0; i < trace_face_integs.Size(); i++)
-      { delete trace_face_integs[i]; }
-      for (i = 0; i < boundary_trace_face_integs.Size(); i++)
-      { delete boundary_trace_face_integs[i]; }
+      for (i = 0; i < dbfi.Size(); i++) { delete dbfi[i]; }
+      for (i = 0; i < bbfi.Size(); i++) { delete bbfi[i]; }
+      for (i = 0; i < tfbfi.Size(); i++) { delete tfbfi[i]; }
+      for (i = 0; i < btfbfi.Size(); i++) { delete btfbfi[i]; }
   }
   delete ext;
 }
@@ -1869,8 +1822,6 @@ void DiscreteLinearOperator::Assemble(int skip_zeros)

   Array<int> dom_vdofs, ran_vdofs;
   ElementTransformation *T;
-   DofTransformation * dom_dof_trans;
-   DofTransformation * ran_dof_trans;
   const FiniteElement *dom_fe, *ran_fe;
   DenseMatrix totelmat, elmat;

@@ -1879,33 +1830,27 @@ void DiscreteLinearOperator::Assemble(int skip_zeros)
      mat = new SparseMatrix(height, width);
   }

-   if (domain_integs.Size() > 0)
+   if (dbfi.Size() > 0)
   {
      for (int i = 0; i < test_fes->GetNE(); i++)
      {
-         dom_dof_trans = trial_fes->GetElementVDofs(i, dom_vdofs);
-         ran_dof_trans = test_fes->GetElementVDofs(i, ran_vdofs);
+         trial_fes->GetElementVDofs(i, dom_vdofs);
+         test_fes->GetElementVDofs(i, ran_vdofs);
         T = test_fes->GetElementTransformation(i);
         dom_fe = trial_fes->GetFE(i);
         ran_fe = test_fes->GetFE(i);

-         domain_integs[0]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T,
-                                                  totelmat);
-         for (int j = 1; j < domain_integs.Size(); j++)
+         dbfi[0]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T, totelmat);
+         for (int j = 1; j < dbfi.Size(); j++)
         {
-            domain_integs[j]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T,
-                                                     elmat);
+            dbfi[j]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T, elmat);
            totelmat += elmat;
         }
-         if (ran_dof_trans || dom_dof_trans)
-         {
-            TransformPrimal(ran_dof_trans, dom_dof_trans, totelmat);
-         }
         mat->SetSubMatrix(ran_vdofs, dom_vdofs, totelmat, skip_zeros);
      }
   }

-   if (trace_face_integs.Size())
+   if (tfbfi.Size())
   {
      const int nfaces = test_fes->GetMesh()->GetNumFaces();
      for (int i = 0; i < nfaces; i++)
@@ -1916,12 +1861,10 @@ void DiscreteLinearOperator::Assemble(int skip_zeros)
         dom_fe = trial_fes->GetFaceElement(i);
         ran_fe = test_fes->GetFaceElement(i);

-         trace_face_integs[0]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T,
-                                                      totelmat);
-         for (int j = 1; j < trace_face_integs.Size(); j++)
+         tfbfi[0]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T, totelmat);
+         for (int j = 1; j < tfbfi.Size(); j++)
         {
-            trace_face_integs[j]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T,
-                                                         elmat);
+            tfbfi[j]->AssembleElementMatrix2(*dom_fe, *ran_fe, *T, elmat);
            totelmat += elmat;
         }
         mat->SetSubMatrix(ran_vdofs, dom_vdofs, totelmat, skip_zeros);
@@ -84,29 +84,28 @@ protected:
       the BilinearForm. */
   long sequence;

-   /** @brief Indicates the BilinearFormIntegrator%s stored in #domain_integs,
-       #boundary_integs, #interior_face_integs, and #boundary_face_integs are
-       owned by another BilinearForm. */
+   /** @brief Indicates the BilinearFormIntegrator%s stored in #dbfi, #bbfi,
+       #fbfi, and #bfbfi are owned by another BilinearForm. */
   int extern_bfs;

   /// Set of Domain Integrators to be applied.
-   Array<BilinearFormIntegrator*> domain_integs;
+   Array<BilinearFormIntegrator*> dbfi;
   /// Element attribute marker (should be of length mesh->attributes)
   /// Includes all by default.
   /// 0 - ignore attribute
   /// 1 - include attribute
-   Array<Array<int>*>             domain_integs_marker;
+   Array<Array<int>*>             dbfi_marker;

   /// Set of Boundary Integrators to be applied.
-   Array<BilinearFormIntegrator*> boundary_integs;
-   Array<Array<int>*> boundary_integs_marker; ///< Entries are not owned.
+   Array<BilinearFormIntegrator*> bbfi;
+   Array<Array<int>*>             bbfi_marker; ///< Entries are not owned.

   /// Set of interior face Integrators to be applied.
-   Array<BilinearFormIntegrator*> interior_face_integs;
+   Array<BilinearFormIntegrator*> fbfi;

   /// Set of boundary face Integrators to be applied.
-   Array<BilinearFormIntegrator*> boundary_face_integs;
-   Array<Array<int>*> boundary_face_integs_marker; ///< Entries are not owned.
+   Array<BilinearFormIntegrator*> bfbfi;
+   Array<Array<int>*>             bfbfi_marker; ///< Entries are not owned.

   DenseMatrix elemmat;
   Array<int>  vdofs;
@@ -232,25 +231,24 @@ public:
   void AllocateMatrix() { if (mat == NULL) { AllocMat(); } }

   /// Access all the integrators added with AddDomainIntegrator().
-   Array<BilinearFormIntegrator*> *GetDBFI() { return &domain_integs; }
+   Array<BilinearFormIntegrator*> *GetDBFI() { return &dbfi; }

   /// Access all the integrators added with AddBoundaryIntegrator().
-   Array<BilinearFormIntegrator*> *GetBBFI() { return &boundary_integs; }
+   Array<BilinearFormIntegrator*> *GetBBFI() { return &bbfi; }
   /** @brief Access all boundary markers added with AddBoundaryIntegrator().
       If no marker was specified when the integrator was added, the
       corresponding pointer (to Array<int>) will be NULL. */
-   Array<Array<int>*> *GetBBFI_Marker() { return &boundary_integs_marker; }
+   Array<Array<int>*> *GetBBFI_Marker() { return &bbfi_marker; }

   /// Access all integrators added with AddInteriorFaceIntegrator().
-   Array<BilinearFormIntegrator*> *GetFBFI() { return &interior_face_integs; }
+   Array<BilinearFormIntegrator*> *GetFBFI() { return &fbfi; }

   /// Access all integrators added with AddBdrFaceIntegrator().
-   Array<BilinearFormIntegrator*> *GetBFBFI() { return &boundary_face_integs; }
+   Array<BilinearFormIntegrator*> *GetBFBFI() { return &bfbfi; }
   /** @brief Access all boundary markers added with AddBdrFaceIntegrator().
       If no marker was specified when the integrator was added, the
       corresponding pointer (to Array<int>) will be NULL. */
-   Array<Array<int>*> *GetBFBFI_Marker()
-   { return &boundary_face_integs_marker; }
+   Array<Array<int>*> *GetBFBFI_Marker() { return &bfbfi_marker; }

   /// Returns a reference to: \f$ M_{ij} \f$
   const double &operator()(int i, int j) { return (*mat)(i,j); }
@@ -654,25 +652,23 @@ protected:
       Partial Assembly (PA), or Matrix Free assembly (MF). */
   MixedBilinearFormExtension *ext;

-   /** @brief Indicates the BilinearFormIntegrator%s stored in #domain_integs,
-       #boundary_integs, #trace_face_integs and #boundary_trace_face_integs
-       are owned by another MixedBilinearForm. */
+   /** @brief Indicates the BilinearFormIntegrator%s stored in #dbfi, #bbfi,
+       #tfbfi and #btfbfi are owned by another MixedBilinearForm. */
   int extern_bfs;

   /// Domain integrators.
-   Array<BilinearFormIntegrator*> domain_integs;
+   Array<BilinearFormIntegrator*> dbfi;

   /// Boundary integrators.
-   Array<BilinearFormIntegrator*> boundary_integs;
-   Array<Array<int>*> boundary_integs_marker; ///< Entries are not owned.
+   Array<BilinearFormIntegrator*> bbfi;
+   Array<Array<int>*>             bbfi_marker;///< Entries are not owned.

   /// Trace face (skeleton) integrators.
-   Array<BilinearFormIntegrator*> trace_face_integs;
+   Array<BilinearFormIntegrator*> tfbfi;

   /// Boundary trace face (skeleton) integrators.
-   Array<BilinearFormIntegrator*> boundary_trace_face_integs;
-   /// Entries are not owned.
-   Array<Array<int>*> boundary_trace_face_integs_marker;
+   Array<BilinearFormIntegrator*> btfbfi;
+   Array<Array<int>*>             btfbfi_marker;///< Entries are not owned.

   DenseMatrix elemmat;
   Array<int>  trial_vdofs, test_vdofs;
@@ -766,26 +762,24 @@ public:
                                   Array<int> &bdr_marker);

   /// Access all integrators added with AddDomainIntegrator().
-   Array<BilinearFormIntegrator*> *GetDBFI() { return &domain_integs; }
+   Array<BilinearFormIntegrator*> *GetDBFI() { return &dbfi; }

   /// Access all integrators added with AddBoundaryIntegrator().
-   Array<BilinearFormIntegrator*> *GetBBFI() { return &boundary_integs; }
+   Array<BilinearFormIntegrator*> *GetBBFI() { return &bbfi; }
   /** @brief Access all boundary markers added with AddBoundaryIntegrator().
       If no marker was specified when the integrator was added, the
       corresponding pointer (to Array<int>) will be NULL. */
-   Array<Array<int>*> *GetBBFI_Marker() { return &boundary_integs_marker; }
+   Array<Array<int>*> *GetBBFI_Marker() { return &bbfi_marker; }

   /// Access all integrators added with AddTraceFaceIntegrator().
-   Array<BilinearFormIntegrator*> *GetTFBFI() { return &trace_face_integs; }
+   Array<BilinearFormIntegrator*> *GetTFBFI() { return &tfbfi; }

   /// Access all integrators added with AddBdrTraceFaceIntegrator().
-   Array<BilinearFormIntegrator*> *GetBTFBFI()
-   { return &boundary_trace_face_integs; }
+   Array<BilinearFormIntegrator*> *GetBTFBFI() { return &btfbfi; }
   /** @brief Access all boundary markers added with AddBdrTraceFaceIntegrator().
       If no marker was specified when the integrator was added, the
       corresponding pointer (to Array<int>) will be NULL. */
-   Array<Array<int>*> *GetBTFBFI_Marker()
-   { return &boundary_trace_face_integs_marker; }
+   Array<Array<int>*> *GetBTFBFI_Marker() { return &btfbfi_marker; }

   /// Sets all sparse values of \f$ M \f$ to @a a.
   void operator=(const double a) { *mat = a; }
@@ -1010,7 +1004,7 @@ public:
   { AddTraceFaceIntegrator(di); }

   /// Access all interpolators added with AddDomainInterpolator().
-   Array<BilinearFormIntegrator*> *GetDI() { return &domain_integs; }
+   Array<BilinearFormIntegrator*> *GetDI() { return &dbfi; }

   /// Set the desired assembly level. The default is AssemblyLevel::FULL.
   /** This method must be called before assembly. */
@@ -160,7 +160,7 @@ void MFBilinearFormExtension::Mult(const Vector &x, Vector &y) const
         {
            intFaceIntegrators[i]->AddMultMF(faceIntX, faceIntY);
         }
-         int_face_restrict_lex->AddMultTranspose(faceIntY, y);
+         int_face_restrict_lex->MultTranspose(faceIntY, y);
      }
   }

@@ -176,7 +176,7 @@ void MFBilinearFormExtension::Mult(const Vector &x, Vector &y) const
         {
            bdrFaceIntegrators[i]->AddMultMF(faceBdrX, faceBdrY);
         }
-         bdr_face_restrict_lex->AddMultTranspose(faceBdrY, y);
+         bdr_face_restrict_lex->MultTranspose(faceBdrY, y);
      }
   }
 }
@@ -217,7 +217,7 @@ void MFBilinearFormExtension::MultTranspose(const Vector &x, Vector &y) const
         {
            intFaceIntegrators[i]->AddMultTransposeMF(faceIntX, faceIntY);
         }
-         int_face_restrict_lex->AddMultTranspose(faceIntY, y);
+         int_face_restrict_lex->MultTranspose(faceIntY, y);
      }
   }

@@ -233,7 +233,7 @@ void MFBilinearFormExtension::MultTranspose(const Vector &x, Vector &y) const
         {
            bdrFaceIntegrators[i]->AddMultTransposeMF(faceBdrX, faceBdrY);
         }
-         bdr_face_restrict_lex->AddMultTranspose(faceBdrY, y);
+         bdr_face_restrict_lex->MultTranspose(faceBdrY, y);
      }
   }
 }
@@ -417,7 +417,7 @@ void PABilinearFormExtension::Mult(const Vector &x, Vector &y) const
         {
            intFaceIntegrators[i]->AddMultPA(faceIntX, faceIntY);
         }
-         int_face_restrict_lex->AddMultTranspose(faceIntY, y);
+         int_face_restrict_lex->MultTranspose(faceIntY, y);
      }
   }

@@ -433,7 +433,7 @@ void PABilinearFormExtension::Mult(const Vector &x, Vector &y) const
         {
            bdrFaceIntegrators[i]->AddMultPA(faceBdrX, faceBdrY);
         }
-         bdr_face_restrict_lex->AddMultTranspose(faceBdrY, y);
+         bdr_face_restrict_lex->MultTranspose(faceBdrY, y);
      }
   }
 }
@@ -474,7 +474,7 @@ void PABilinearFormExtension::MultTranspose(const Vector &x, Vector &y) const
         {
            intFaceIntegrators[i]->AddMultTransposePA(faceIntX, faceIntY);
         }
-         int_face_restrict_lex->AddMultTranspose(faceIntY, y);
+         int_face_restrict_lex->MultTranspose(faceIntY, y);
      }
   }

@@ -490,7 +490,7 @@ void PABilinearFormExtension::MultTranspose(const Vector &x, Vector &y) const
         {
            bdrFaceIntegrators[i]->AddMultTransposePA(faceBdrX, faceBdrY);
         }
-         bdr_face_restrict_lex->AddMultTranspose(faceBdrY, y);
+         bdr_face_restrict_lex->MultTranspose(faceBdrY, y);
      }
   }
 }
@@ -657,7 +657,7 @@ void EABilinearFormExtension::Mult(const Vector &x, Vector &y) const
            Y(j, 0, f) += res;
         });
         // Apply the Interior Face Restriction transposed
-         int_face_restrict_lex->AddMultTranspose(faceIntY, y);
+         int_face_restrict_lex->MultTranspose(faceIntY, y);
      }
   }

@@ -688,7 +688,7 @@ void EABilinearFormExtension::Mult(const Vector &x, Vector &y) const
            Y(j, f) += res;
         });
         // Apply the Boundary Face Restriction transposed
-         bdr_face_restrict_lex->AddMultTranspose(faceBdrY, y);
+         bdr_face_restrict_lex->MultTranspose(faceBdrY, y);
      }
   }
 }
@@ -783,7 +783,7 @@ void EABilinearFormExtension::MultTranspose(const Vector &x, Vector &y) const
            Y(j, 0, f) += res;
         });
         // Apply the Interior Face Restriction transposed
-         int_face_restrict_lex->AddMultTranspose(faceIntY, y);
+         int_face_restrict_lex->MultTranspose(faceIntY, y);
      }
   }

@@ -814,7 +814,7 @@ void EABilinearFormExtension::MultTranspose(const Vector &x, Vector &y) const
            Y(j, f) += res;
         });
         // Apply the Boundary Face Restriction transposed
-         bdr_face_restrict_lex->AddMultTranspose(faceBdrY, y);
+         bdr_face_restrict_lex->MultTranspose(faceBdrY, y);
      }
   }
 }
@@ -72,8 +72,8 @@ protected:
   mutable Vector faceIntX, faceIntY;
   mutable Vector faceBdrX, faceBdrY;
   const Operator *elem_restrict; // Not owned
-   const FaceRestriction *int_face_restrict_lex; // Not owned
-   const FaceRestriction *bdr_face_restrict_lex; // Not owned
+   const Operator *int_face_restrict_lex; // Not owned
+   const Operator *bdr_face_restrict_lex; // Not owned

 public:
   PABilinearFormExtension(BilinearForm*);
@@ -143,8 +143,8 @@ protected:
   mutable Vector faceIntX, faceIntY;
   mutable Vector faceBdrX, faceBdrY;
   const Operator *elem_restrict; // Not owned
-   const FaceRestriction *int_face_restrict_lex; // Not owned
-   const FaceRestriction *bdr_face_restrict_lex; // Not owned
+   const Operator *int_face_restrict_lex; // Not owned
+   const Operator *bdr_face_restrict_lex; // Not owned

 public:
   MFBilinearFormExtension(BilinearForm *form);
@@ -175,11 +175,6 @@ void BilinearFormIntegrator::AssembleFaceVector(
   elmat.Mult(elfun, elvect);
 }

-void TransposeIntegrator::SetIntRule(const IntegrationRule *ir)
-{
-   IntRule = ir;
-   bfi->SetIntRule(ir);
-}

 void TransposeIntegrator::AssembleElementMatrix (
   const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
@@ -207,12 +202,6 @@ void TransposeIntegrator::AssembleFaceMatrix (
   elmat.Transpose (bfi_elmat);
 }

-void LumpedIntegrator::SetIntRule(const IntegrationRule *ir)
-{
-   IntRule = ir;
-   bfi->SetIntRule(ir);
-}
-
 void LumpedIntegrator::AssembleElementMatrix (
   const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 {
@@ -220,12 +209,6 @@ void LumpedIntegrator::AssembleElementMatrix (
   elmat.Lump();
 }

-void InverseIntegrator::SetIntRule(const IntegrationRule *ir)
-{
-   IntRule = ir;
-   integrator->SetIntRule(ir);
-}
-
 void InverseIntegrator::AssembleElementMatrix(
   const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 {
@@ -233,15 +216,6 @@ void InverseIntegrator::AssembleElementMatrix(
   elmat.Invert();
 }

-void SumIntegrator::SetIntRule(const IntegrationRule *ir)
-{
-   IntRule = ir;
-   for (int i = 0; i < integrators.Size(); i++)
-   {
-      integrators[i]->SetIntRule(ir);
-   }
-}
-
 void SumIntegrator::AssembleElementMatrix(
   const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 {
@@ -1777,16 +1751,15 @@ void DerivativeIntegrator::AssembleElementMatrix2 (
   int dim = trial_fe.GetDim();
   int trial_nd = trial_fe.GetDof();
   int test_nd = test_fe.GetDof();
-   int spaceDim = Trans.GetSpaceDim();

   int i, l;
   double det;

   elmat.SetSize (test_nd,trial_nd);
   dshape.SetSize (trial_nd,dim);
-   dshapedxt.SetSize(trial_nd, spaceDim);
+   dshapedxt.SetSize(trial_nd,dim);
   dshapedxi.SetSize(trial_nd);
-   invdfdx.SetSize(dim, spaceDim);
+   invdfdx.SetSize(dim);
   shape.SetSize (test_nd);

   const IntegrationRule *ir = IntRule;
@@ -261,8 +261,6 @@ public:
   TransposeIntegrator (BilinearFormIntegrator *bfi_, int own_bfi_ = 1)
   { bfi = bfi_; own_bfi = own_bfi_; }

-   virtual void SetIntRule(const IntegrationRule *ir);
-
   virtual void AssembleElementMatrix(const FiniteElement &el,
                                      ElementTransformation &Trans,
                                      DenseMatrix &elmat);
@@ -330,8 +328,6 @@ public:
   LumpedIntegrator (BilinearFormIntegrator *bfi_, int own_bfi_ = 1)
   { bfi = bfi_; own_bfi = own_bfi_; }

-   virtual void SetIntRule(const IntegrationRule *ir);
-
   virtual void AssembleElementMatrix(const FiniteElement &el,
                                      ElementTransformation &Trans,
                                      DenseMatrix &elmat);
@@ -350,8 +346,6 @@ public:
   InverseIntegrator(BilinearFormIntegrator *integ, int own_integ = 1)
   { integrator = integ; own_integrator = own_integ; }

-   virtual void SetIntRule(const IntegrationRule *ir);
-
   virtual void AssembleElementMatrix(const FiniteElement &el,
                                      ElementTransformation &Trans,
                                      DenseMatrix &elmat);
@@ -370,8 +364,6 @@ private:
 public:
   SumIntegrator(int own_integs = 1) { own_integrators = own_integs; }

-   virtual void SetIntRule(const IntegrationRule *ir);
-
   void AddIntegrator(BilinearFormIntegrator *integ)
   { integrators.Append(integ); }

@@ -711,7 +703,7 @@ protected:
   {
      return "MixedScalarDerivativeIntegrator:  "
             "Trial and test spaces must both be scalar fields in 1D "
-             "and the trial space must implement CalcDShape.";
+             "and the trial space must implement CaldDShape.";
   }

   inline virtual void CalcTrialShape(const FiniteElement & trial_fe,
@@ -2936,11 +2928,11 @@ public:

    - F. Bassi and S. Rebay. A high order discontinuous Galerkin method for
      compressible turbulent flows. In B. Cockburn, G. E. Karniadakis, and
-      C.-W. Shu, editors, Discontinuous Galerkin Methods, pages 77-88. Springer
+      C.-W. Shu, editors, Discontinuous Galerkin Methods, pages 77–88. Springer
      Berlin Heidelberg, 2000.
    - D. N. Arnold, F. Brezzi, B. Cockburn, and L. D. Marini. Unified analysis
      of discontinuous Galerkin methods for elliptic problems. SIAM Journal on
-      Numerical Analysis, 39(5):1749-1779, 2002.
+      Numerical Analysis, 39(5):1749–1779, 2002.
 */
 class DGDiffusionBR2Integrator : public BilinearFormIntegrator
 {
@@ -143,7 +143,7 @@ Solver *BuildSmootherFromCeed(ConstrainedOperator &op, bool chebyshev)
   if (chebyshev)
   {
      const int cheb_order = 3;
-      out = new OperatorChebyshevSmoother(op, t_diag, ess_tdofs, cheb_order);
+      out = new OperatorChebyshevSmoother(&op, t_diag, ess_tdofs, cheb_order);
   }
   else
   {
@@ -1204,30 +1204,17 @@ ParSesquilinearForm::FormLinearSystem(const Array<int> &ess_tdof_list,
      });
      // Modify offdiagonal blocks (imaginary parts of the matrix) to conform
      // with standard essential BC treatment
+      ess_tdof_list.HostRead();
      if (A_i.Type() == Operator::Hypre_ParCSR)
      {
         HypreParMatrix * Ah;
         A_i.Get(Ah);
         hypre_ParCSRMatrix *Aih = *Ah;
-#ifndef HYPRE_USING_CUDA
-         ess_tdof_list.HostRead();
         for (int k = 0; k < n; k++)
         {
            const int j = ess_tdof_list[k];
            Aih->diag->data[Aih->diag->i[j]] = 0.0;
         }
-#else
-         Ah->HypreReadWrite();
-         const int *d_ess_tdof_list =
-            ess_tdof_list.GetMemory().Read(MemoryClass::DEVICE, n);
-         const int *d_diag_i = Aih->diag->i;
-         double *d_diag_data = Aih->diag->data;
-         CuWrap1D(n, [=] MFEM_DEVICE (int k)
-         {
-            const int j = d_ess_tdof_list[k];
-            d_diag_data[d_diag_i[j]] = 0.0;
-         });
-#endif
      }
      else
      {
@@ -17,7 +17,6 @@

 #include <cerrno>      // errno
 #include <sstream>
-#include <regex>

 #ifndef _WIN32
 #include <sys/stat.h>  // mkdir
@@ -765,8 +764,7 @@ ParaViewDataCollection::ParaViewDataCollection(const std::string&
   : DataCollection(collection_name, mesh_),
     levels_of_detail(1),
     pv_data_format(VTKFormat::BINARY),
-     high_order_output(false),
-     restart_mode(false)
+     high_order_output(false)
 {
 #ifdef MFEM_USE_ZLIB
   compression = -1; // default zlib compression level, equivalent to 6
@@ -844,60 +842,17 @@ void ParaViewDataCollection::Save()
   }
   // the directory is created

-   // create pvd file if needed. If we are not in restart mode, a new pvd file
-   // is always created. In restart mode, we keep any previously defined
-   // timestep values as long as they are less than the currently defined time.
-
+   // create pvd file if needed
   if (myid == 0 && !pvd_stream.is_open())
   {
      std::string dpath=GenerateCollectionPath();
      std::string pvdname=dpath+"/"+GeneratePVDFileName();
-
-      std::ifstream pvd_in;
-      if (restart_mode && (pvd_in.open(pvdname,std::ios::binary),pvd_in.good()))
-      {
-         // PVD file exists and restart mode enabled: preserve existing time
-         // steps less than the current time.
-         std::fstream::pos_type pos_begin = pvd_in.tellg();
-         std::fstream::pos_type pos_end = pos_begin;
-
-         std::regex regexp("timestep=\"([^[:space:]]+)\".*file=\"Cycle(\\d+)");
-         std::smatch match;
-
-         std::string line;
-         while (getline(pvd_in,line))
-         {
-            if (regex_search(line,match,regexp))
-            {
-               MFEM_ASSERT(match.size() == 3, "Unable to parse DataSet");
-               double tvalue = std::stod(match[1]);
-               if (tvalue >= GetTime()) { break; }
-               int cvalue = std::stoi(match[2]);
-               MFEM_VERIFY(cvalue < GetCycle(), "Cycle " << GetCycle() <<
-                           " is too small for restart mode: trying to overwrite"
-                           " existing data.");
-               pos_end = pvd_in.tellg();
-            }
-         }
-         size_t count = pos_end - pos_begin;
-         std::vector<char> buf(count);
-         pvd_in.clear();
-         pvd_in.seekg(pos_begin);
-         pvd_in.read(buf.data(), count);
-         pvd_in.close();
-         pvd_stream.open(pvdname.c_str(),std::ios::out);
-         pvd_stream.write(buf.data(), count);
-      }
-      else
-      {
-         // initialize new pvd file
-         pvd_stream.open(pvdname.c_str(),std::ios::out);
-         // initialize the file
-         pvd_stream << "<?xml version=\"1.0\"?>\n";
-         pvd_stream << "<VTKFile type=\"Collection\" version=\"0.1\"";
-         pvd_stream << " byte_order=\"" << VTKByteOrder() << "\">\n";
-         pvd_stream << "<Collection>" << std::endl;
-      }
+      pvd_stream.open(pvdname.c_str(),std::ios::out);
+      // initialize the file
+      pvd_stream << "<?xml version=\"1.0\"?>\n";
+      pvd_stream << "<VTKFile type=\"Collection\" version=\"0.1\"";
+      pvd_stream << " byte_order=\"" << VTKByteOrder() << "\">\n";
+      pvd_stream << "<Collection>" << std::endl;
   }

   // define the vtu file
@@ -1136,11 +1091,6 @@ void ParaViewDataCollection::SetCompression(bool compression_)
   }
 }

-void ParaViewDataCollection::UseRestartMode(bool restart_mode_)
-{
-   restart_mode = restart_mode_;
-}
-
 const char *ParaViewDataCollection::GetDataFormatString() const
 {
   if (pv_data_format == VTKFormat::ASCII)
@@ -488,7 +488,6 @@ private:
   std::fstream pvd_stream;
   VTKFormat pv_data_format;
   bool high_order_output;
-   bool restart_mode;

 protected:
   void SaveDataVTU(std::ostream &out, int ref);
@@ -546,11 +545,6 @@ public:
   /// by default). Reading high-order data requires ParaView 5.5 or later.
   void SetHighOrderOutput(bool high_order_output_);

-   /// Enable or disable restart mode. If restart is enabled, new writes will
-   /// preserve timestep metadata for any solutions prior to the currently
-   /// defined time.
-   void UseRestartMode(bool restart_mode_);
-
   /// Load the collection - not implemented in the ParaView writer
   virtual void Load(int cycle_ = 0) override;
 };
@@ -1,358 +0,0 @@
-// Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-// LICENSE and NOTICE for details. LLNL-CODE-806117.
-//
-// This file is part of the MFEM library. For more information and source code
-// availability visit https://mfem.org.
-//
-// MFEM is free software; you can redistribute it and/or modify it under the
-// terms of the BSD-3 license. We welcome feedback and contributions, see file
-// CONTRIBUTING.md for details.
-
-#include "fem.hpp"
-
-namespace mfem
-{
-
-void DofTransformation::TransformPrimal(Vector &v) const
-{
-   TransformPrimal(v.GetData());
-}
-
-void DofTransformation::TransformPrimalCols(DenseMatrix &V) const
-{
-   for (int c=0; c<V.Width(); c++)
-   {
-      TransformPrimal(V.GetColumn(c));
-   }
-}
-
-void DofTransformation::TransformDual(Vector &v) const
-{
-   TransformDual(v.GetData());
-}
-
-void DofTransformation::TransformDual(DenseMatrix &V) const
-{
-   TransformDualCols(V);
-   TransformDualRows(V);
-}
-
-void DofTransformation::TransformDualRows(DenseMatrix &V) const
-{
-   Vector row;
-   for (int r=0; r<V.Height(); r++)
-   {
-      V.GetRow(r, row);
-      TransformDual(row);
-      V.SetRow(r, row);
-   }
-}
-
-void DofTransformation::TransformDualCols(DenseMatrix &V) const
-{
-   for (int c=0; c<V.Width(); c++)
-   {
-      TransformDual(V.GetColumn(c));
-   }
-}
-
-void DofTransformation::InvTransformPrimal(Vector &v) const
-{
-   InvTransformPrimal(v.GetData());
-}
-
-void TransformPrimal(const DofTransformation *ran_dof_trans,
-                     const DofTransformation *dom_dof_trans,
-                     DenseMatrix &elmat)
-{
-   if (ran_dof_trans && dom_dof_trans)
-   {
-      ran_dof_trans->TransformPrimalCols(elmat);
-      dom_dof_trans->TransformDualRows(elmat);
-   }
-   else if (ran_dof_trans)
-   {
-      ran_dof_trans->TransformPrimalCols(elmat);
-   }
-   else if (dom_dof_trans)
-   {
-      dom_dof_trans->TransformDualRows(elmat);
-   }
-   else
-   {
-      // If both transformations are NULL this function should not be called
-   }
-}
-
-void TransformDual(const DofTransformation *ran_dof_trans,
-                   const DofTransformation *dom_dof_trans,
-                   DenseMatrix &elmat)
-{
-   if (ran_dof_trans && dom_dof_trans)
-   {
-      ran_dof_trans->TransformDualCols(elmat);
-      dom_dof_trans->TransformDualRows(elmat);
-   }
-   else if (ran_dof_trans)
-   {
-      ran_dof_trans->TransformDualCols(elmat);
-   }
-   else if (dom_dof_trans)
-   {
-      dom_dof_trans->TransformDualRows(elmat);
-   }
-   else
-   {
-      // If both transformations are NULL this function should not be called
-   }
-}
-
-void VDofTransformation::TransformPrimal(double *v) const
-{
-   int size = doftrans_->Size();
-
-   if ((Ordering::Type)ordering_ == Ordering::byNODES || vdim_ == 1)
-   {
-      for (int i=0; i<vdim_; i++)
-      {
-         doftrans_->TransformPrimal(&v[i*size]);
-      }
-   }
-   else
-   {
-      Vector vec(size);
-      for (int i=0; i<vdim_; i++)
-      {
-         for (int j=0; j<size; j++)
-         {
-            vec(j) = v[j*vdim_+i];
-         }
-         doftrans_->TransformPrimal(vec);
-         for (int j=0; j<size; j++)
-         {
-            v[j*vdim_+i] = vec(j);
-         }
-      }
-   }
-}
-
-void VDofTransformation::InvTransformPrimal(double *v) const
-{
-   int size = doftrans_->Height();
-
-   if ((Ordering::Type)ordering_ == Ordering::byNODES)
-   {
-      for (int i=0; i<vdim_; i++)
-      {
-         doftrans_->InvTransformPrimal(&v[i*size]);
-      }
-   }
-   else
-   {
-      Vector vec(size);
-      for (int i=0; i<vdim_; i++)
-      {
-         for (int j=0; j<size; j++)
-         {
-            vec(j) = v[j*vdim_+i];
-         }
-         doftrans_->InvTransformPrimal(vec);
-         for (int j=0; j<size; j++)
-         {
-            v[j*vdim_+i] = vec(j);
-         }
-      }
-   }
-}
-
-void VDofTransformation::TransformDual(double *v) const
-{
-   int size = doftrans_->Size();
-
-   if ((Ordering::Type)ordering_ == Ordering::byNODES)
-   {
-      for (int i=0; i<vdim_; i++)
-      {
-         doftrans_->TransformDual(&v[i*size]);
-      }
-   }
-   else
-   {
-      Vector vec(size);
-      for (int i=0; i<vdim_; i++)
-      {
-         for (int j=0; j<size; j++)
-         {
-            vec(j) = v[j*vdim_+i];
-         }
-         doftrans_->TransformDual(vec);
-         for (int j=0; j<size; j++)
-         {
-            v[j*vdim_+i] = vec(j);
-         }
-      }
-   }
-}
-
-const double ND_DofTransformation::T_data[24] =
-{
-   1.0,  0.0,  0.0,  1.0,
-   -1.0, -1.0,  0.0,  1.0,
-   0.0,  1.0, -1.0, -1.0,
-   1.0,  0.0, -1.0, -1.0,
-   -1.0, -1.0,  1.0,  0.0,
-   0.0,  1.0,  1.0,  0.0
-};
-
-const DenseTensor ND_DofTransformation
-::T(const_cast<double*>(ND_DofTransformation::T_data), 2, 2, 6);
-
-const double ND_DofTransformation::TInv_data[24] =
-{
-   1.0,  0.0,  0.0,  1.0,
-   -1.0, -1.0,  0.0,  1.0,
-   -1.0, -1.0,  1.0,  0.0,
-   1.0,  0.0, -1.0, -1.0,
-   0.0,  1.0, -1.0, -1.0,
-   0.0,  1.0,  1.0,  0.0
-};
-
-const DenseTensor ND_DofTransformation
-::TInv(const_cast<double*>(TInv_data), 2, 2, 6);
-
-ND_DofTransformation::ND_DofTransformation(int size, int p)
-   : DofTransformation(size),
-     order(p)
-{
-}
-
-ND_TriDofTransformation::ND_TriDofTransformation(int p)
-   : ND_DofTransformation(p*(p + 2), p)
-{
-}
-
-void ND_TriDofTransformation::TransformPrimal(double *v) const
-{
-   int nedofs = order; // number of DoFs per edge
-   int nfdofs = order*(order-1); // number of DoFs per face
-
-   double data[2];
-   Vector v2(data, 2);
-
-   // Transform face DoFs
-   for (int f=0; f<1; f++)
-   {
-      for (int i=0; i<nfdofs/2; i++)
-      {
-         v2 = &v[3*nedofs + f*nfdofs + 2*i];
-         T(Fo[f]).Mult(v2, &v[3*nedofs + f*nfdofs + 2*i]);
-      }
-   }
-}
-
-void
-ND_TriDofTransformation::InvTransformPrimal(double *v) const
-{
-   int nedofs = order; // number of DoFs per edge
-   int nfdofs = order*(order-1); // number of DoFs per face
-
-   double data[2];
-   Vector v2(data, 2);
-
-   // Transform face DoFs
-   for (int f=0; f<1; f++)
-   {
-      for (int i=0; i<nfdofs/2; i++)
-      {
-         v2 = &v[3*nedofs + f*nfdofs + 2*i];
-         TInv(Fo[f]).Mult(v2, &v[3*nedofs + f*nfdofs + 2*i]);
-      }
-   }
-}
-
-void
-ND_TriDofTransformation::TransformDual(double *v) const
-{
-   int nedofs = order; // number of DoFs per edge
-   int nfdofs = order*(order-1); // number of DoFs per face
-
-   double data[2];
-   Vector v2(data, 2);
-
-   // Transform face DoFs
-   for (int f=0; f<1; f++)
-   {
-      for (int i=0; i<nfdofs/2; i++)
-      {
-         v2 = &v[3*nedofs + f*nfdofs + 2*i];
-         TInv(Fo[f]).MultTranspose(v2, &v[3*nedofs + f*nfdofs + 2*i]);
-      }
-   }
-}
-
-ND_TetDofTransformation::ND_TetDofTransformation(int p)
-   : ND_DofTransformation(p*(p + 2)*(p + 3)/2, p)
-{
-}
-
-void ND_TetDofTransformation::TransformPrimal(double *v) const
-{
-   int nedofs = order; // number of DoFs per edge
-   int nfdofs = order*(order-1); // number of DoFs per face
-
-   double data[2];
-   Vector v2(data, 2);
-
-   // Transform face DoFs
-   for (int f=0; f<4; f++)
-   {
-      for (int i=0; i<nfdofs/2; i++)
-      {
-         v2 = &v[6*nedofs + f*nfdofs + 2*i];
-         T(Fo[f]).Mult(v2, &v[6*nedofs + f*nfdofs + 2*i]);
-      }
-   }
-}
-
-void
-ND_TetDofTransformation::InvTransformPrimal(double *v) const
-{
-   int nedofs = order; // number of DoFs per edge
-   int nfdofs = order*(order-1); // number of DoFs per face
-
-   double data[2];
-   Vector v2(data, 2);
-
-   // Transform face DoFs
-   for (int f=0; f<4; f++)
-   {
-      for (int i=0; i<nfdofs/2; i++)
-      {
-         v2 = &v[6*nedofs + f*nfdofs + 2*i];
-         TInv(Fo[f]).Mult(v2, &v[6*nedofs + f*nfdofs + 2*i]);
-      }
-   }
-}
-
-void
-ND_TetDofTransformation::TransformDual(double *v) const
-{
-   int nedofs = order; // number of DoFs per edge
-   int nfdofs = order*(order-1); // number of DoFs per face
-
-   double data[2];
-   Vector v2(data, 2);
-
-   // Transform face DoFs
-   for (int f=0; f<4; f++)
-   {
-      for (int i=0; i<nfdofs/2; i++)
-      {
-         v2 = &v[6*nedofs + f*nfdofs + 2*i];
-         TInv(Fo[f]).MultTranspose(v2, &v[6*nedofs + f*nfdofs + 2*i]);
-      }
-   }
-}
-
-} // namespace mfem
@@ -1,277 +0,0 @@
-// Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-// LICENSE and NOTICE for details. LLNL-CODE-806117.
-//
-// This file is part of the MFEM library. For more information and source code
-// availability visit https://mfem.org.
-//
-// MFEM is free software; you can redistribute it and/or modify it under the
-// terms of the BSD-3 license. We welcome feedback and contributions, see file
-// CONTRIBUTING.md for details.
-
-#ifndef MFEM_DOFTRANSFORM
-#define MFEM_DOFTRANSFORM
-
-#include "../config/config.hpp"
-#include "../linalg/linalg.hpp"
-#include "intrules.hpp"
-#include "fe.hpp"
-
-namespace mfem
-{
-
-/** The DofTransformation class is an abstract base class for a family of
-    transformations that map local degrees of freedom (DoFs), contained within
-    individual elements, to global degrees of freedom, stored within
-    GridFunction objects. These transformations are necessary to ensure that
-    basis functions in neighboring elements align correctly. Closely related but
-    complementary transformations are required for the entries stored in
-    LinearForm and BilinearForm objects. The DofTransformation class is designed
-    to apply the action of both of these types of DoF transformations.
-
-    Let the "primal transformation" be given by the operator T. This means that
-    given a local element vector v the data that must be placed into a
-    GridFunction object is v_t = T * v.
-
-    We also need the inverse of the primal transformation T^{-1} so that we can
-    recover the local element vector from data read out of a GridFunction
-    e.g. v = T^{-1} * v_t.
-
-    We need to preserve the action of our linear forms applied to primal
-    vectors. In other words, if f is the local vector computed by a linear
-    form then f * v = f_t * v_t (where "*" represents an inner product of
-    vectors). This requires that f_t = T^{-T} * f i.e. the "dual transform" is
-    given by the transpose of the inverse of the primal transformation.
-
-    For bilinear forms we require that v^T * A * v = v_t^T * A_t * v_t. This
-    implies that A_t = T^{-T} * A * T^{-1}. This can be accomplished by
-    performing dual transformations of the rows and columns of the matrix A.
-
-    For discrete linear operators the range must be modified with the primal
-    transformation rather than the dual transformation because the result is a
-    primal vector rather than a dual vector. This leads to the transformation
-    D_t = T * D * T^{-1}. This can be accomplished by using a primal
-    transformation on the columns of D and a dual transformation on its rows.
-*/
-class DofTransformation
-{
-protected:
-   int size_;
-
-   Array<int> Fo;
-
-   DofTransformation(int size)
-      : size_(size) {}
-
-public:
-
-   inline int Size() const { return size_; }
-   inline int Height() const { return size_; }
-   inline int NumRows() const { return size_; }
-   inline int Width() const { return size_; }
-   inline int NumCols() const { return size_; }
-
-   /** @brief Configure the transformation using face orientations for the
-       current element. */
-   /// The face_orientation array can be obtained from Mesh::GetElementFaces.
-   inline void SetFaceOrientations(const Array<int> & face_orientation)
-   { Fo = face_orientation; }
-
-   inline const Array<int> & GetFaceOrientations() const { return Fo; }
-
-   /** Transform local DoFs to align with the global DoFs. For example, this
-       transformation can be used to map the local vector computed by
-       FiniteElement::Project() to the transformed vector stored within a
-       GridFunction object. */
-   virtual void TransformPrimal(double *v) const = 0;
-   virtual void TransformPrimal(Vector &v) const;
-
-   /// Transform groups of DoFs stored as dense matrices
-   virtual void TransformPrimalCols(DenseMatrix &V) const;
-
-   /** Inverse transform local DoFs. Used to transform DoFs from a global vector
-       back to their element-local form. For example, this must be used to
-       transform the vector obtained using GridFunction::GetSubVector before it
-       can be used to compute a local interpolation.
-   */
-   virtual void InvTransformPrimal(double *v) const = 0;
-   virtual void InvTransformPrimal(Vector &v) const;
-
-   /** Transform dual DoFs as computed by a LinearFormIntegrator before summing
-       into a LinearForm object. */
-   virtual void TransformDual(double *v) const = 0;
-   virtual void TransformDual(Vector &v) const;
-
-   /** Transform a matrix of dual DoFs entries as computed by a
-       BilinearFormIntegrator before summing into a BilinearForm object. */
-   virtual void TransformDual(DenseMatrix &V) const;
-
-   /// Transform groups of dual DoFs stored as dense matrices
-   virtual void TransformDualRows(DenseMatrix &V) const;
-   virtual void TransformDualCols(DenseMatrix &V) const;
-
-   virtual ~DofTransformation() {}
-};
-
-/** Transform a matrix of DoFs entries from different finite element spaces as
-    computed by a DiscreteInterpolator before copying into a
-    DiscreteLinearOperator.
-*/
-void TransformPrimal(const DofTransformation *ran_dof_trans,
-                     const DofTransformation *dom_dof_trans,
-                     DenseMatrix &elmat);
-
-/** Transform a matrix of dual DoFs entries from different finite element spaces
-    as computed by a BilinearFormIntegrator before summing into a
-    MixedBilinearForm object.
-*/
-void TransformDual(const DofTransformation *ran_dof_trans,
-                   const DofTransformation *dom_dof_trans,
-                   DenseMatrix &elmat);
-
-/** The VDofTransformation class implements a nested transformation where an
-    arbitrary DofTransformation is replicated with a vdim >= 1.
-*/
-class VDofTransformation : public DofTransformation
-{
-private:
-   int vdim_;
-   int ordering_;
-   DofTransformation * doftrans_;
-
-public:
-   /** @brief Default constructor which requires that SetDofTransformation be
-       called before use. */
-   VDofTransformation(int vdim = 1, int ordering = 0)
-      : DofTransformation(0),
-        vdim_(vdim), ordering_(ordering),
-        doftrans_(NULL) {}
-
-   /// Constructor with a known DofTransformation
-   VDofTransformation(DofTransformation & doftrans, int vdim = 1,
-                      int ordering = 0)
-      : DofTransformation(vdim * doftrans.Size()),
-        vdim_(vdim), ordering_(ordering),
-        doftrans_(&doftrans) {}
-
-   /// Set or change the vdim parameter
-   inline void SetVDim(int vdim)
-   {
-      vdim_ = vdim;
-      if (doftrans_)
-      {
-         size_ = vdim_ * doftrans_->Size();
-      }
-   }
-
-   /// Return the current vdim value
-   inline int GetVDim() const { return vdim_; }
-
-   /// Set or change the nested DofTransformation object
-   inline void SetDofTransformation(DofTransformation & doftrans)
-   {
-      size_ = vdim_ * doftrans.Size();
-      doftrans_ = &doftrans;
-   }
-
-   /// Return the nested DofTransformation object
-   inline DofTransformation * GetDofTransformation() const { return doftrans_; }
-
-   inline void SetFaceOrientation(const Array<int> & face_orientation)
-   { Fo = face_orientation; doftrans_->SetFaceOrientations(face_orientation); }
-
-   using DofTransformation::TransformPrimal;
-   using DofTransformation::InvTransformPrimal;
-   using DofTransformation::TransformDual;
-
-   void TransformPrimal(double *v) const;
-   void InvTransformPrimal(double *v) const;
-   void TransformDual(double *v) const;
-};
-
-/** Abstract base class for high-order Nedelec spaces on elements with
-    triangular faces.
-
-    The Nedelec DoFs on the interior of triangular faces come in pairs which
-    share an interpolation point but have different vector directions. These
-    directions depend on the orientation of the face and can therefore differ in
-    neighboring elements. The mapping required to transform these DoFs can be
-    implemented as series of 2x2 linear transformations. The raw data for these
-    linear transformations is stored in the T_data and TInv_data arrays and can
-    be accessed as DenseMatrices using the GetFaceTransform() and
-    GetFaceInverseTransform() methods.
-*/
-class ND_DofTransformation : public DofTransformation
-{
-protected:
-   static const double T_data[24];
-   static const double TInv_data[24];
-   static const DenseTensor T, TInv;
-   int order;
-
-   ND_DofTransformation(int size, int order);
-
-public:
-   // Return the 2x2 transformation operator for the given face orientation
-   static const DenseMatrix & GetFaceTransform(int ori) { return T(ori); }
-
-   // Return the 2x2 inverse transformation operator
-   static const DenseMatrix & GetFaceInverseTransform(int ori)
-   { return TInv(ori); }
-};
-
-/// DoF transformation implementation for the Nedelec basis on triangles
-class ND_TriDofTransformation : public ND_DofTransformation
-{
-public:
-   ND_TriDofTransformation(int order);
-
-   using DofTransformation::TransformPrimal;
-   using DofTransformation::InvTransformPrimal;
-   using DofTransformation::TransformDual;
-
-   void TransformPrimal(double *v) const;
-
-   void InvTransformPrimal(double *v) const;
-
-   void TransformDual(double *v) const;
-};
-
-/// DoF transformation implementation for the Nedelec basis on tetrahedra
-class ND_TetDofTransformation : public ND_DofTransformation
-{
-public:
-   ND_TetDofTransformation(int order);
-
-   using DofTransformation::TransformPrimal;
-   using DofTransformation::InvTransformPrimal;
-   using DofTransformation::TransformDual;
-
-   void TransformPrimal(double *v) const;
-
-   void InvTransformPrimal(double *v) const;
-
-   void TransformDual(double *v) const;
-};
-
-/// DoF transformation implementation for the Nedelec basis on wedge elements
-/** TODO: (Under development) */
-class ND_WedgeDofTransformation : public ND_DofTransformation
-{
-public:
-   ND_WedgeDofTransformation(int order);
-
-   using DofTransformation::TransformPrimal;
-   using DofTransformation::InvTransformPrimal;
-   using DofTransformation::TransformDual;
-
-   void TransformPrimal(double *v) const;
-
-   void InvTransformPrimal(double *v) const;
-
-   void TransformDual(double *v) const;
-};
-
-} // namespace mfem
-
-#endif // MFEM_DOFTRANSFORM
@@ -380,7 +380,6 @@ void IsoparametricTransformation::SetIdentityTransformation(
      case Geometry::TETRAHEDRON : FElem = &TetrahedronFE; break;
      case Geometry::CUBE :        FElem = &HexahedronFE; break;
      case Geometry::PRISM :       FElem = &WedgeFE; break;
-      case Geometry::PYRAMID :     FElem = &PyramidFE; break;
      default:
         MFEM_ABORT("unknown Geometry::Type!");
   }
@@ -316,7 +316,7 @@ public:

   /// Set the desired print level, useful for debugging.
   /** The valid options are: -1 - never print (default); 0 - print only errors;
-       1 - print the first and last iterations; 2 - print every iteration;
+       1 - print the first and last last iterations; 2 - print every iteration;
       and 3 - print every iteration including point coordinates. */
   void SetPrintLevel(int pr_level) { print_level = pr_level; }

@@ -329,7 +329,7 @@ void KellyErrorEstimator::ComputeEstimates()
         error_estimates(e) = sqrt(factor * error_estimates(e));
      }

-      total_error = error_estimates.Norml2();
+      total_error = error_estimates.Sum();
      delete flux;
      return;
   }
@@ -452,10 +452,9 @@ void KellyErrorEstimator::ComputeEstimates()
   auto pfes = dynamic_cast<ParFiniteElementSpace*>(xfes);
   MFEM_VERIFY(pfes, "xfes is not a ParFiniteElementSpace pointer");

-   double process_local_error = pow(error_estimates.Norml2(),2.0);
+   double process_local_error = error_estimates.Sum();
   MPI_Allreduce(&process_local_error, &total_error, 1, MPI_DOUBLE,
                 MPI_SUM, pfes->GetComm());
-   total_error = sqrt(total_error);
 #endif // MFEM_USE_MPI
 }

@@ -97,7 +97,7 @@ public:
      {
         "Gauss-Legendre", "Gauss-Lobatto", "Positive (Bernstein)",
         "Open uniform", "Closed uniform", "Open half uniform",
-         "Serendipity", "Closed Gauss-Legendre",
+         "Seredipity", "Closed Gauss-Legendre",
         "Integrated Gauss-Lobatto indicator"
      };
      return name[Check(b_type)];
@@ -1126,7 +1126,7 @@ public:
   { dofs = 1.0; }
 };

-/// A 1D quadratic finite element with uniformly spaced nodes
+/// A 1D quadractic finite element with uniformly spaced nodes
 class Quad1DFiniteElement : public NodalFiniteElement
 {
 public:
@@ -1313,64 +1313,6 @@ public:
                           DenseMatrix &dshape) const;
 };

-/// A linear element defined on a triangular prism
-class LinearWedgeFiniteElement : public NodalFiniteElement
-{
-public:
-   /// Construct the LinearWedgeFiniteElement
-   LinearWedgeFiniteElement();
-
-   /** @brief virtual function which evaluates the values of all
-       shape functions at a given point ip and stores
-       them in the vector shape of dimension Dof (4) */
-   virtual void CalcShape(const IntegrationPoint &ip, Vector &shape) const;
-
-   /** @brief virtual function which evaluates the values of all
-       partial derivatives of all shape functions at a given
-       point ip and stores them in the matrix dshape (Dof x Dim) (4 x 3)
-       so that each row contains the derivatives of one shape function */
-   virtual void CalcDShape(const IntegrationPoint &ip,
-                           DenseMatrix &dshape) const;
-
-   virtual void ProjectDelta(int vertex, Vector &dofs) const
-   { dofs = 0.0; dofs(vertex) = 1.0; }
-
-   /** @brief Get the dofs associated with the given @a face.
-       @a *dofs is set to an internal array of the local dofc on the
-       face, while *ndofs is set to the number of dofs on that face.
-   */
-   virtual void GetFaceDofs(int face, int **dofs, int *ndofs) const;
-};
-
-/// A linear element defined on a square pyramid
-class LinearPyramidFiniteElement : public NodalFiniteElement
-{
-public:
-   /// Construct the LinearPyramidFiniteElement
-   LinearPyramidFiniteElement();
-
-   /** @brief virtual function which evaluates the values of all
-       shape functions at a given point ip and stores
-       them in the vector shape of dimension Dof (4) */
-   virtual void CalcShape(const IntegrationPoint &ip, Vector &shape) const;
-
-   /** @brief virtual function which evaluates the values of all
-       partial derivatives of all shape functions at a given
-       point ip and stores them in the matrix dshape (Dof x Dim) (4 x 3)
-       so that each row contains the derivatives of one shape function */
-   virtual void CalcDShape(const IntegrationPoint &ip,
-                           DenseMatrix &dshape) const;
-
-   virtual void ProjectDelta(int vertex, Vector &dofs) const
-   { dofs = 0.0; dofs(vertex) = 1.0; }
-
-   /** @brief Get the dofs associated with the given @a face.
-       @a *dofs is set to an internal array of the local dofc on the
-       face, while *ndofs is set to the number of dofs on that face.
-   */
-   virtual void GetFaceDofs(int face, int **dofs, int *ndofs) const;
-};
-
 /// A 2D constant element on a triangle
 class P0TriangleFiniteElement : public NodalFiniteElement
 {
@@ -1748,32 +1690,6 @@ public:
   { dofs(0) = 1.0; }
 };

-/// A 3D constant element on a wedge
-class P0WdgFiniteElement : public NodalFiniteElement
-{
-public:
-   /// Construct the P0WdgFiniteElement
-   P0WdgFiniteElement ();
-   virtual void CalcShape(const IntegrationPoint &ip, Vector &shape) const;
-   virtual void CalcDShape(const IntegrationPoint &ip,
-                           DenseMatrix &dshape) const;
-   virtual void ProjectDelta(int vertex, Vector &dofs) const
-   { dofs(0) = 1.0; }
-};
-
-/// A 3D constant element on a pyramid
-class P0PyrFiniteElement : public NodalFiniteElement
-{
-public:
-   /// Construct the P0PyrFiniteElement
-   P0PyrFiniteElement ();
-   virtual void CalcShape(const IntegrationPoint &ip, Vector &shape) const;
-   virtual void CalcDShape(const IntegrationPoint &ip,
-                           DenseMatrix &dshape) const;
-   virtual void ProjectDelta(int vertex, Vector &dofs) const
-   { dofs(0) = 1.0; }
-};
-
 /** @brief Tensor products of 1D Lagrange1DFiniteElement
    (only degree 2 is functional) */
 class LagrangeHexFiniteElement : public NodalFiniteElement
@@ -1912,10 +1828,6 @@ public:
   using FiniteElement::Project;
   virtual void Project (VectorCoefficient &vc,
                         ElementTransformation &Trans, Vector &dofs) const;
-
-   virtual void ProjectGrad(const FiniteElement &fe,
-                            ElementTransformation &Trans,
-                            DenseMatrix &grad) const;
 };


@@ -1940,66 +1852,6 @@ public:
   using FiniteElement::Project;
   virtual void Project (VectorCoefficient &vc,
                         ElementTransformation &Trans, Vector &dofs) const;
-
-   virtual void ProjectGrad(const FiniteElement &fe,
-                            ElementTransformation &Trans,
-                            DenseMatrix &grad) const;
-};
-
-
-/// A 3D 1st order Nedelec element on a wedge
-class Nedelec1WdgFiniteElement : public VectorFiniteElement
-{
-private:
-   static const double tk[9][3];
-
-public:
-   /// Construct the Nedelec1WdgFiniteElement
-   Nedelec1WdgFiniteElement();
-   virtual void CalcVShape(const IntegrationPoint &ip,
-                           DenseMatrix &shape) const;
-   virtual void CalcVShape(ElementTransformation &Trans,
-                           DenseMatrix &shape) const
-   { CalcVShape_ND(Trans, shape); }
-   virtual void CalcCurlShape(const IntegrationPoint &ip,
-                              DenseMatrix &curl_shape) const;
-   virtual void GetLocalInterpolation (ElementTransformation &Trans,
-                                       DenseMatrix &I) const;
-   using FiniteElement::Project;
-   virtual void Project (VectorCoefficient &vc,
-                         ElementTransformation &Trans, Vector &dofs) const;
-
-   virtual void ProjectGrad(const FiniteElement &fe,
-                            ElementTransformation &Trans,
-                            DenseMatrix &grad) const;
-};
-
-
-/// A 3D 1st order Nedelec element on a pyramid
-class Nedelec1PyrFiniteElement : public VectorFiniteElement
-{
-private:
-   static const double tk[8][3];
-
-public:
-   /// Construct the Nedelec1PyrFiniteElement
-   Nedelec1PyrFiniteElement();
-   virtual void CalcVShape(const IntegrationPoint &ip,
-                           DenseMatrix &shape) const;
-   virtual void CalcVShape(ElementTransformation &Trans,
-                           DenseMatrix &shape) const
-   { CalcVShape_ND(Trans, shape); }
-   virtual void CalcCurlShape(const IntegrationPoint &ip,
-                              DenseMatrix &curl_shape) const;
-   virtual void GetLocalInterpolation (ElementTransformation &Trans,
-                                       DenseMatrix &I) const;
-   using FiniteElement::Project;
-   virtual void Project (VectorCoefficient &vc,
-                         ElementTransformation &Trans, Vector &dofs) const;
-
-   virtual void ProjectGrad(const FiniteElement &fe,
-                            ElementTransformation &Trans,
-                            DenseMatrix &grad) const;
 };


@@ -2093,77 +1945,6 @@ public:
 };


-/// A 3D 0th order Raviert-Thomas element on a wedge
-class RT0WdgFiniteElement : public VectorFiniteElement
-{
-private:
-   static const double nk[5][3];
-
-public:
-   /// Construct the RT0WdgFiniteElement
-   RT0WdgFiniteElement();
-
-   virtual void CalcVShape(const IntegrationPoint &ip,
-                           DenseMatrix &shape) const;
-
-   virtual void CalcVShape(ElementTransformation &Trans,
-                           DenseMatrix &shape) const
-   { CalcVShape_RT(Trans, shape); }
-
-   virtual void CalcDivShape(const IntegrationPoint &ip,
-                             Vector &divshape) const;
-
-   virtual void GetLocalInterpolation (ElementTransformation &Trans,
-                                       DenseMatrix &I) const;
-
-   using FiniteElement::Project;
-
-   virtual void Project (VectorCoefficient &vc,
-                         ElementTransformation &Trans, Vector &dofs) const;
-
-   virtual void ProjectCurl(const FiniteElement &fe,
-                            ElementTransformation &Trans,
-                            DenseMatrix &curl) const;
-};
-
-
-/// A 3D 0th order Raviert-Thomas element on a pyramid
-class RT0PyrFiniteElement : public VectorFiniteElement
-{
-private:
-   static const double nk[5][3];
-
-   // If true match RT0TetFiniteElement rather than RT_TetrahedronElement(0)
-   bool rt0;
-
-public:
-   /// Construct the RT0PyrFiniteElement
-   RT0PyrFiniteElement(bool rt0tets = true);
-
-   virtual void CalcVShape(const IntegrationPoint &ip,
-                           DenseMatrix &shape) const;
-
-   virtual void CalcVShape(ElementTransformation &Trans,
-                           DenseMatrix &shape) const
-   { CalcVShape_RT(Trans, shape); }
-
-   virtual void CalcDivShape(const IntegrationPoint &ip,
-                             Vector &divshape) const;
-
-   virtual void GetLocalInterpolation (ElementTransformation &Trans,
-                                       DenseMatrix &I) const;
-
-   using FiniteElement::Project;
-
-   virtual void Project (VectorCoefficient &vc,
-                         ElementTransformation &Trans, Vector &dofs) const;
-
-   virtual void ProjectCurl(const FiniteElement &fe,
-                            ElementTransformation &Trans,
-                            DenseMatrix &curl) const;
-};
-
-
 class RotTriLinearHexFiniteElement : public NodalFiniteElement
 {
 public:
@@ -2458,11 +2239,6 @@ public:
                             const int cbtype, const int obtype,
                             const int M, const DofMapType dmtype);

-   // For 1D elements: there is only an "open basis", no "closed basis"
-   VectorTensorFiniteElement(const int dims, const int d, const int p,
-                             const int obtype, const int M,
-                             const DofMapType dmtype);
-
   const DofToQuad &GetDofToQuad(const IntegrationRule &ir,
                                 DofToQuad::Mode mode) const;

@@ -3535,9 +3311,11 @@ public:


 /// Arbitrary order Nedelec elements in 1D on a segment
-class ND_SegmentElement : public VectorTensorFiniteElement
+class ND_SegmentElement : public VectorFiniteElement
 {
   static const double tk[1];
+
+   Poly_1D::Basis &obasis1d;
   Array<int> dof2tk;

 public:
@@ -33,9 +33,6 @@ int FiniteElementCollection::HasFaceDofs(Geometry::Type geom, int p) const
      case Geometry::PRISM:
         return max(GetNumDof(Geometry::TRIANGLE, p),
                    GetNumDof(Geometry::SQUARE, p));
-      case Geometry::PYRAMID:
-         return max(GetNumDof(Geometry::TRIANGLE, p),
-                    GetNumDof(Geometry::SQUARE, p));
      default:
         MFEM_ABORT("unknown geometry type");
   }
@@ -577,7 +574,6 @@ LinearFECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
      case Geometry::TETRAHEDRON: return &TetrahedronFE;
      case Geometry::CUBE:        return &ParallelepipedFE;
      case Geometry::PRISM:       return &WedgeFE;
-      case Geometry::PYRAMID:     return &PyramidFE;
      default:
         mfem_error ("LinearFECollection: unknown geometry type.");
   }
@@ -595,7 +591,6 @@ int LinearFECollection::DofForGeometry(Geometry::Type GeomType) const
      case Geometry::TETRAHEDRON: return 0;
      case Geometry::CUBE:        return 0;
      case Geometry::PRISM:       return 0;
-      case Geometry::PYRAMID:     return 0;
      default:
         mfem_error ("LinearFECollection: unknown geometry type.");
   }
@@ -1245,7 +1240,6 @@ Const3DFECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
      case Geometry::TETRAHEDRON: return &TetrahedronFE;
      case Geometry::CUBE:        return &ParallelepipedFE;
      case Geometry::PRISM:       return &WedgeFE;
-      case Geometry::PYRAMID:     return &PyramidFE;
      default:
         mfem_error ("Const3DFECollection: unknown geometry type.");
   }
@@ -1263,7 +1257,6 @@ int Const3DFECollection::DofForGeometry(Geometry::Type GeomType) const
      case Geometry::TETRAHEDRON: return 1;
      case Geometry::CUBE:        return 1;
      case Geometry::PRISM:       return 1;
-      case Geometry::PYRAMID:     return 1;
      default:
         mfem_error ("Const3DFECollection: unknown geometry type.");
   }
@@ -1284,8 +1277,6 @@ LinearDiscont3DFECollection::FiniteElementForGeometry(
   switch (GeomType)
   {
      case Geometry::TETRAHEDRON: return &TetrahedronFE;
-      case Geometry::PYRAMID:     return &PyramidFE;
-      case Geometry::PRISM:       return &WedgeFE;
      case Geometry::CUBE:        return &ParallelepipedFE;
      default:
         mfem_error ("LinearDiscont3DFECollection: unknown geometry type.");
@@ -1302,8 +1293,6 @@ int LinearDiscont3DFECollection::DofForGeometry(Geometry::Type GeomType) const
      case Geometry::TRIANGLE:    return 0;
      case Geometry::SQUARE:      return 0;
      case Geometry::TETRAHEDRON: return 4;
-      case Geometry::PYRAMID:     return 5;
-      case Geometry::PRISM:       return 6;
      case Geometry::CUBE:        return 8;
      default:
         mfem_error ("LinearDiscont3DFECollection: unknown geometry type.");
@@ -1405,8 +1394,6 @@ ND1_3DFECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
   {
      case Geometry::CUBE:        return &HexahedronFE;
      case Geometry::TETRAHEDRON: return &TetrahedronFE;
-      case Geometry::PRISM:       return &WedgeFE;
-      case Geometry::PYRAMID:     return &PyramidFE;
      default:
         mfem_error ("ND1_3DFECollection: unknown geometry type.");
   }
@@ -1423,8 +1410,6 @@ int ND1_3DFECollection::DofForGeometry(Geometry::Type GeomType) const
      case Geometry::SQUARE:      return 0;
      case Geometry::TETRAHEDRON: return 0;
      case Geometry::CUBE:        return 0;
-      case Geometry::PRISM:       return 0;
-      case Geometry::PYRAMID:     return 0;
      default:
         mfem_error ("ND1_3DFECollection: unknown geometry type.");
   }
@@ -1454,8 +1439,6 @@ RT0_3DFECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
      case Geometry::SQUARE:      return &QuadrilateralFE;
      case Geometry::CUBE:        return &HexahedronFE;
      case Geometry::TETRAHEDRON: return &TetrahedronFE;
-      case Geometry::PRISM:       return &WedgeFE;
-      case Geometry::PYRAMID:     return &PyramidFE;
      default:
         mfem_error ("RT0_3DFECollection: unknown geometry type.");
   }
@@ -1472,8 +1455,6 @@ int RT0_3DFECollection::DofForGeometry(Geometry::Type GeomType) const
      case Geometry::SQUARE:      return 1;
      case Geometry::TETRAHEDRON: return 0;
      case Geometry::CUBE:        return 0;
-      case Geometry::PRISM:       return 0;
-      case Geometry::PYRAMID:     return 0;
      default:
         mfem_error ("RT0_3DFECollection: unknown geometry type.");
   }
@@ -1749,7 +1730,6 @@ H1_FECollection::H1_FECollection(const int p, const int dim, const int btype)
         H1_dof[Geometry::TETRAHEDRON] = (TriDof*pm3)/3;
         H1_dof[Geometry::CUBE] = QuadDof*pm1;
         H1_dof[Geometry::PRISM] = TriDof*pm1;
-         H1_dof[Geometry::PYRAMID] = 0;
         if (b_type == BasisType::Positive)
         {
            H1_Elements[Geometry::TETRAHEDRON] = new H1Pos_TetrahedronElement(p);
@@ -1763,7 +1743,6 @@ H1_FECollection::H1_FECollection(const int p, const int dim, const int btype)
            H1_Elements[Geometry::CUBE] = new H1_HexahedronElement(p, btype);
            H1_Elements[Geometry::PRISM] = new H1_WedgeElement(p, btype);
         }
-         H1_Elements[Geometry::PYRAMID] = new LinearPyramidFiniteElement;

         const int &TetDof = H1_dof[Geometry::TETRAHEDRON];
         TetDofOrd[0] = new int[24*TetDof];
@@ -1858,21 +1837,6 @@ H1_FECollection::H1_FECollection(const int p, const int dim, const int btype)
   }
 }

-const FiniteElement *
-H1_FECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
-{
-   if (GeomType != Geometry::PYRAMID || this->GetOrder() == 1)
-   {
-      return H1_Elements[GeomType];
-   }
-   else
-   {
-      MFEM_ABORT("H1 Pyramid basis functions are not yet supported "
-                 "for order > 1.");
-      return NULL;
-   }
-}
-
 const int *H1_FECollection::DofOrderForOrientation(Geometry::Type GeomType,
                                                   int Or) const
 {
@@ -2112,12 +2076,9 @@ L2_FECollection::L2_FECollection(const int p, const int dim, const int btype,
         L2_Elements[Geometry::CUBE] = new L2_HexahedronElement(p, btype);
         L2_Elements[Geometry::PRISM] = new L2_WedgeElement(p, btype);
      }
-      L2_Elements[Geometry::PYRAMID] = new P0PyrFiniteElement;
-
      L2_Elements[Geometry::TETRAHEDRON]->SetMapType(map_type);
      L2_Elements[Geometry::CUBE]->SetMapType(map_type);
      L2_Elements[Geometry::PRISM]->SetMapType(map_type);
-      L2_Elements[Geometry::PYRAMID]->SetMapType(map_type);
      // Trace element use the default Gauss-Legendre nodal points for positive basis
      if (b_type == BasisType::Positive)
      {
@@ -2238,21 +2199,6 @@ L2_FECollection::L2_FECollection(const int p, const int dim, const int btype,
   }
 }

-const FiniteElement *
-L2_FECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
-{
-   if (GeomType != Geometry::PYRAMID || this->GetOrder() == 0)
-   {
-      return L2_Elements[GeomType];
-   }
-   else
-   {
-      MFEM_ABORT("L2 Pyramid basis functions are not yet supported "
-                 "for order > 0.");
-      return NULL;
-   }
-}
-
 const int *L2_FECollection::DofOrderForOrientation(Geometry::Type GeomType,
                                                   int Or) const
 {
@@ -2344,12 +2290,6 @@ RT_FECollection::RT_FECollection(const int order, const int dim,

      RT_Elements[Geometry::CUBE] = new RT_HexahedronElement(p, cb_type, ob_type);
      RT_dof[Geometry::CUBE] = 3*p*pp1*pp1;
-
-      RT_Elements[Geometry::PRISM] = new RT0WdgFiniteElement;
-      RT_dof[Geometry::PRISM] = 0;
-
-      RT_Elements[Geometry::PYRAMID] = new RT0PyrFiniteElement(false);
-      RT_dof[Geometry::PYRAMID] = 0;
   }
   else
   {
@@ -2493,22 +2433,6 @@ void RT_FECollection::InitFaces(const int p, const int dim,
   }
 }

-const FiniteElement *
-RT_FECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
-{
-   if ((GeomType != Geometry::PRISM && GeomType != Geometry::PYRAMID) ||
-       this->GetOrder() == 1)
-   {
-      return RT_Elements[GeomType];
-   }
-   else
-   {
-      MFEM_ABORT("RT Wedge and Pyramid basis functions are not yet supported "
-                 "for order > 0.");
-      return NULL;
-   }
-}
-
 const int *RT_FECollection::DofOrderForOrientation(Geometry::Type GeomType,
                                                   int Or) const
 {
@@ -2732,31 +2656,18 @@ ND_FECollection::ND_FECollection(const int p, const int dim,
      {
         for (int i = 0; i + j <= pm2; i++)
         {
-            int k0 = p*pm1 - (p - j)*(pm1 - j) + 2*i;
-            int k1 = 2*pm2 - 2*i + ((2*p-3)-j)*j;
-            int k2 = 2*pm2 - 2*j + ((2*p-3)-i)*i;
-            int k3 = p*pm1 - 2 - 3*j - i - (i+j)*(i+j);
-            int k4 = p*pm1 - 2 - 3*i - j - (i+j)*(i+j);
-            int k5 = p*pm1 - (p - i)*(pm1 - i) + 2*j;
-
+            int k1 = p*pm1 - (p - j)*(pm1 - j) + 2*i;
+            int k2 = p*pm1 - (p - i)*(pm1 - i) + 2*j;
            // (0,1,2)
-            TriDofOrd[0][k0  ] = k0;
-            TriDofOrd[0][k0+1] = k0 + 1;
-            // (1,0,2)
-            TriDofOrd[1][k0  ] = k1;
-            TriDofOrd[1][k0+1] = k1 + 1;
-            // (2,0,1)
-            TriDofOrd[2][k0  ] = k2;
-            TriDofOrd[2][k0+1] = k2 + 1;
-            // (2,1,0)
-            TriDofOrd[3][k0  ] = k3;
-            TriDofOrd[3][k0+1] = k3 + 1;
-            // (1,2,0)
-            TriDofOrd[4][k0  ] = k4;
-            TriDofOrd[4][k0+1] = k4 + 1;
+            TriDofOrd[0][k1  ] = k1;
+            TriDofOrd[0][k1+1] = k1 + 1;
            // (0,2,1)
-            TriDofOrd[5][k0  ] = k5;
-            TriDofOrd[5][k0+1] = k5 + 1;
+            TriDofOrd[5][k1  ] = k2 + 1;
+            TriDofOrd[5][k1+1] = k2;
+
+            // The other orientations can not be supported with the current
+            // interface. The method Mesh::ReorientTetMesh will ensure that
+            // only orientations 0 and 5 are generated.
         }
      }
   }
@@ -2769,28 +2680,6 @@ ND_FECollection::ND_FECollection(const int p, const int dim,
      // TODO: cb_type and ob_type for tets
      ND_Elements[Geometry::TETRAHEDRON] = new ND_TetrahedronElement(p);
      ND_dof[Geometry::TETRAHEDRON] = p*pm1*pm2/2;
-
-      ND_Elements[Geometry::PRISM] = new Nedelec1WdgFiniteElement;
-      ND_dof[Geometry::PRISM] = 0;
-
-      ND_Elements[Geometry::PYRAMID] = new Nedelec1PyrFiniteElement;
-      ND_dof[Geometry::PYRAMID] = 0;
-   }
-}
-
-const FiniteElement *
-ND_FECollection::FiniteElementForGeometry(Geometry::Type GeomType) const
-{
-   if ((GeomType != Geometry::PRISM && GeomType != Geometry::PYRAMID) ||
-       this->GetOrder() == 1)
-   {
-      return ND_Elements[GeomType];
-   }
-   else
-   {
-      MFEM_ABORT("ND Wedge and Pyramid basis functions are not yet supported "
-                 "for order > 1.");
-      return NULL;
   }
 }

@@ -2803,6 +2692,11 @@ const int *ND_FECollection::DofOrderForOrientation(Geometry::Type GeomType,
   }
   else if (GeomType == Geometry::TRIANGLE)
   {
+      if (Or != 0 && Or != 5)
+      {
+         MFEM_ABORT("triangle face orientation " << Or << " is not supported! "
+                    "Use Mesh::ReorientTetMesh to fix it.");
+      }
      return TriDofOrd[Or%6];
   }
   else if (GeomType == Geometry::SQUARE)
@@ -228,7 +228,8 @@ public:
                            const int btype = BasisType::GaussLobatto);

   virtual const FiniteElement *FiniteElementForGeometry(
-      Geometry::Type GeomType) const;
+      Geometry::Type GeomType) const
+   { return H1_Elements[GeomType]; }
   virtual int DofForGeometry(Geometry::Type GeomType) const
   { return H1_dof[GeomType]; }
   virtual const int *DofOrderForOrientation(Geometry::Type GeomType,
@@ -301,7 +302,10 @@ public:
                   const int map_type = FiniteElement::VALUE);

   virtual const FiniteElement *FiniteElementForGeometry(
-      Geometry::Type GeomType) const;
+      Geometry::Type GeomType) const
+   {
+      return L2_Elements[GeomType];
+   }
   virtual int DofForGeometry(Geometry::Type GeomType) const
   {
      if (L2_Elements[GeomType])
@@ -367,7 +371,8 @@ public:
                   const int ob_type = BasisType::GaussLegendre);

   virtual const FiniteElement *FiniteElementForGeometry(
-      Geometry::Type GeomType) const;
+      Geometry::Type GeomType) const
+   { return RT_Elements[GeomType]; }
   virtual int DofForGeometry(Geometry::Type GeomType) const
   { return RT_dof[GeomType]; }
   virtual const int *DofOrderForOrientation(Geometry::Type GeomType,
@@ -425,7 +430,8 @@ public:
                   const int ob_type = BasisType::GaussLegendre);

   virtual const FiniteElement *
-   FiniteElementForGeometry(Geometry::Type GeomType) const;
+   FiniteElementForGeometry(Geometry::Type GeomType) const
+   { return ND_Elements[GeomType]; }

   virtual int DofForGeometry(Geometry::Type GeomType) const
   { return ND_dof[GeomType]; }
@@ -523,10 +529,9 @@ private:
   const BiLinear2DFiniteElement QuadrilateralFE;
   const Linear3DFiniteElement TetrahedronFE;
   const TriLinear3DFiniteElement ParallelepipedFE;
-   const LinearWedgeFiniteElement WedgeFE;
-   const LinearPyramidFiniteElement PyramidFE;
+   const H1_WedgeElement WedgeFE;
 public:
-   LinearFECollection() : FiniteElementCollection(1) { }
+   LinearFECollection() : FiniteElementCollection(1), WedgeFE(1) { }

   virtual const FiniteElement *
   FiniteElementForGeometry(Geometry::Type GeomType) const;
@@ -931,11 +936,10 @@ class Const3DFECollection : public FiniteElementCollection
 private:
   const P0TetFiniteElement TetrahedronFE;
   const P0HexFiniteElement ParallelepipedFE;
-   const P0WdgFiniteElement WedgeFE;
-   const P0PyrFiniteElement PyramidFE;
+   const L2_WedgeElement WedgeFE;

 public:
-   Const3DFECollection() : FiniteElementCollection(0) { }
+   Const3DFECollection() : FiniteElementCollection(0), WedgeFE(0) { }

   virtual const FiniteElement *
   FiniteElementForGeometry(Geometry::Type GeomType) const;
@@ -956,8 +960,6 @@ class LinearDiscont3DFECollection : public FiniteElementCollection
 {
 private:
   const Linear3DFiniteElement TetrahedronFE;
-   const LinearPyramidFiniteElement PyramidFE;
-   const LinearWedgeFiniteElement WedgeFE;
   const TriLinear3DFiniteElement ParallelepipedFE;

 public:
@@ -1034,8 +1036,6 @@ class ND1_3DFECollection : public FiniteElementCollection
 private:
   const Nedelec1HexFiniteElement HexahedronFE;
   const Nedelec1TetFiniteElement TetrahedronFE;
-   const Nedelec1WdgFiniteElement WedgeFE;
-   const Nedelec1PyrFiniteElement PyramidFE;

 public:
   ND1_3DFECollection() : FiniteElementCollection(1) { }
@@ -1061,8 +1061,6 @@ private:
   const P0QuadFiniteElement QuadrilateralFE;
   const RT0HexFiniteElement HexahedronFE;
   const RT0TetFiniteElement TetrahedronFE;
-   const RT0WdgFiniteElement WedgeFE;
-   const RT0PyrFiniteElement PyramidFE;
 public:
   RT0_3DFECollection() : FiniteElementCollection(1) { }

@@ -16,7 +16,6 @@
 #include "geom.hpp"
 #include "fe.hpp"
 #include "fe_coll.hpp"
-#include "doftrans.hpp"
 #include "eltrans.hpp"
 #include "coefficient.hpp"
 #include "complex_fem.hpp"
@@ -35,7 +34,6 @@
 #include "staticcond.hpp"
 #include "tmop.hpp"
 #include "tmop_tools.hpp"
-#include "tmop_amr.hpp"
 #include "gslib.hpp"
 #include "restriction.hpp"
 #include "quadinterpolator.hpp"
@@ -66,9 +64,4 @@
 #include "adios2datacollection.hpp"
 #endif

-#ifdef MFEM_USE_FMS
-#include "fmsconvert.hpp"
-#include "fmsdatacollection.hpp"
-#endif
-
 #endif
@@ -58,12 +58,9 @@ DofsToVDofs<Ordering::byVDIM>(int ndofs, int vdim, Array<int> &dofs)

 FiniteElementSpace::FiniteElementSpace()
   : mesh(NULL), fec(NULL), vdim(0), ordering(Ordering::byNODES),
-     ndofs(0), nvdofs(0), nedofs(0), nfdofs(0), nbdofs(0),
-     bdofs(NULL),
-     elem_dof(NULL), elem_fos(NULL), bdr_elem_dof(NULL), bdr_elem_fos(NULL),
-     face_dof(NULL),
+     ndofs(0), nvdofs(0), nedofs(0), nfdofs(0), nbdofs(0), bdofs(NULL),
+     elem_dof(NULL), bdr_elem_dof(NULL), face_dof(NULL),
     NURBSext(NULL), own_ext(false),
-     DoFTrans(0), VDoFTrans(vdim, ordering),
     cP(NULL), cR(NULL), cR_hp(NULL), cP_is_set(false),
     Th(Operator::ANY_TYPE),
     sequence(0), mesh_sequence(0), orders_changed(false), relaxed_hp(false)
@@ -72,7 +69,6 @@ FiniteElementSpace::FiniteElementSpace()
 FiniteElementSpace::FiniteElementSpace(const FiniteElementSpace &orig,
                                       Mesh *mesh,
                                       const FiniteElementCollection *fec)
-   : VDoFTrans(orig.vdim, orig.ordering)
 {
   mesh = mesh ? mesh : orig.mesh;
   fec = fec ? fec : orig.fec;
@@ -263,36 +259,16 @@ void FiniteElementSpace::AdjustVDofs (Array<int> &vdofs)
   }
 }

-DofTransformation *
-FiniteElementSpace::GetElementVDofs(int i, Array<int> &vdofs) const
+void FiniteElementSpace::GetElementVDofs(int i, Array<int> &vdofs) const
 {
-   DofTransformation * doftrans = GetElementDofs(i, vdofs);
+   GetElementDofs(i, vdofs);
   DofsToVDofs(vdofs);
-   if (vdim == 1 || doftrans == NULL)
-   {
-      return doftrans;
-   }
-   else
-   {
-      VDoFTrans.SetDofTransformation(*doftrans);
-      return &VDoFTrans;
-   }
 }

-DofTransformation *
-FiniteElementSpace::GetBdrElementVDofs(int i, Array<int> &vdofs) const
+void FiniteElementSpace::GetBdrElementVDofs(int i, Array<int> &vdofs) const
 {
-   DofTransformation * doftrans = GetBdrElementDofs(i, vdofs);
+   GetBdrElementDofs(i, vdofs);
   DofsToVDofs(vdofs);
-   if (vdim == 1 || doftrans == NULL)
-   {
-      return doftrans;
-   }
-   else
-   {
-      VDoFTrans.SetDofTransformation(*doftrans);
-      return &VDoFTrans;
-   }
 }

 void FiniteElementSpace::GetFaceVDofs(int i, Array<int> &vdofs) const
@@ -331,39 +307,21 @@ void FiniteElementSpace::BuildElementToDofTable() const

   // TODO: can we call GetElementDofs only once per element?
   Table *el_dof = new Table;
-   Table *el_fos = (mesh->Dimension() > 2) ? (new Table) : NULL;
   Array<int> dofs;
-   Array<int> F, Fo;
   el_dof -> MakeI (mesh -> GetNE());
-   if (el_fos) { el_fos -> MakeI (mesh -> GetNE()); }
   for (int i = 0; i < mesh -> GetNE(); i++)
   {
      GetElementDofs (i, dofs);
      el_dof -> AddColumnsInRow (i, dofs.Size());
-
-      if (el_fos)
-      {
-         mesh->GetElementFaces(i, F, Fo);
-         el_fos -> AddColumnsInRow (i, Fo.Size());
-      }
   }
   el_dof -> MakeJ();
-   if (el_fos) { el_fos -> MakeJ(); }
   for (int i = 0; i < mesh -> GetNE(); i++)
   {
      GetElementDofs (i, dofs);
      el_dof -> AddConnections (i, (int *)dofs, dofs.Size());
-
-      if (el_fos)
-      {
-         mesh->GetElementFaces(i, F, Fo);
-         el_fos -> AddConnections (i, (int *)Fo, Fo.Size());
-      }
   }
   el_dof -> ShiftUpI();
-   if (el_fos) { el_fos -> ShiftUpI(); }
   elem_dof = el_dof;
-   elem_fos = el_fos;
 }

 void FiniteElementSpace::BuildBdrElementToDofTable() const
@@ -417,9 +375,7 @@ void FiniteElementSpace::BuildFaceToDofTable() const
 void FiniteElementSpace::RebuildElementToDofTable()
 {
   delete elem_dof;
-   delete elem_fos;
   elem_dof = NULL;
-   elem_fos = NULL;
   BuildElementToDofTable();
 }

@@ -1269,7 +1225,7 @@ const Operator *FiniteElementSpace::GetElementRestriction(
   return L2E_nat.Ptr();
 }

-const FaceRestriction *FiniteElementSpace::GetFaceRestriction(
+const Operator *FiniteElementSpace::GetFaceRestriction(
   ElementDofOrdering e_ordering, FaceType type, L2FaceValues mul) const
 {
   const bool is_dg_space = IsDGSpace();
@@ -1283,7 +1239,7 @@ const FaceRestriction *FiniteElementSpace::GetFaceRestriction(
   }
   else
   {
-      FaceRestriction *res;
+      Operator* res;
      if (is_dg_space)
      {
         res = new L2FaceRestriction(*this, e_ordering, type, m);
@@ -1359,10 +1315,8 @@ const FaceQuadratureInterpolator

 SparseMatrix *FiniteElementSpace::RefinementMatrix_main(
   const int coarse_ndofs, const Table &coarse_elem_dof,
-   const Table *coarse_elem_fos, const DenseTensor localP[]) const
+   const DenseTensor localP[]) const
 {
-   /// TODO: Implement DofTransformation support
-
   MFEM_VERIFY(mesh->GetLastOperation() == Mesh::REFINE, "");

   Array<int> dofs, coarse_dofs, coarse_vdofs;
@@ -1445,8 +1399,7 @@ void FiniteElementSpace::GetLocalRefinementMatrices(
 }

 SparseMatrix* FiniteElementSpace::RefinementMatrix(int old_ndofs,
-                                                   const Table* old_elem_dof,
-                                                   const Table* old_elem_fos)
+                                                   const Table* old_elem_dof)
 {
   MFEM_VERIFY(GetNE() >= old_elem_dof->Size(),
               "Previous mesh is not coarser.");
@@ -1459,16 +1412,13 @@ SparseMatrix* FiniteElementSpace::RefinementMatrix(int old_ndofs,
      GetLocalRefinementMatrices(elem_geoms[i], localP[elem_geoms[i]]);
   }

-   return RefinementMatrix_main(old_ndofs, *old_elem_dof, old_elem_fos,
-                                localP);
+   return RefinementMatrix_main(old_ndofs, *old_elem_dof, localP);
 }

 FiniteElementSpace::RefinementOperator::RefinementOperator
-(const FiniteElementSpace* fespace, Table* old_elem_dof, Table* old_elem_fos,
- int old_ndofs)
+(const FiniteElementSpace* fespace, Table* old_elem_dof, int old_ndofs)
   : fespace(fespace)
   , old_elem_dof(old_elem_dof)
-   , old_elem_fos(old_elem_fos)
 {
   MFEM_VERIFY(fespace->GetNE() >= old_elem_dof->Size(),
               "Previous mesh is not coarser.");
@@ -1482,14 +1432,12 @@ FiniteElementSpace::RefinementOperator::RefinementOperator
   {
      fespace->GetLocalRefinementMatrices(elem_geoms[i], localP[elem_geoms[i]]);
   }
-
-   ConstructDoFTrans();
 }

 FiniteElementSpace::RefinementOperator::RefinementOperator(
   const FiniteElementSpace *fespace, const FiniteElementSpace *coarse_fes)
   : Operator(fespace->GetVSize(), coarse_fes->GetVSize()),
-     fespace(fespace), old_elem_dof(NULL), old_elem_fos(NULL)
+     fespace(fespace), old_elem_dof(NULL)
 {
   Mesh::GeometryList elem_geoms(*fespace->GetMesh());

@@ -1501,50 +1449,11 @@ FiniteElementSpace::RefinementOperator::RefinementOperator(

   // Make a copy of the coarse elem_dof Table.
   old_elem_dof = new Table(coarse_fes->GetElementToDofTable());
-
-   // Make a copy of the coarse elem_fos Table if it exists.
-   if (coarse_fes->GetElementToFaceOrientationTable())
-   {
-      old_elem_fos = new Table(*coarse_fes->GetElementToFaceOrientationTable());
-   }
-
-   ConstructDoFTrans();
 }

 FiniteElementSpace::RefinementOperator::~RefinementOperator()
 {
   delete old_elem_dof;
-   delete old_elem_fos;
-}
-
-void FiniteElementSpace::RefinementOperator
-::ConstructDoFTrans()
-{
-   old_DoFTrans.SetSize(Geometry::NUM_GEOMETRIES);
-   for (int i=0; i<old_DoFTrans.Size(); i++)
-   {
-      old_DoFTrans[i] = NULL;
-   }
-
-   const FiniteElementCollection *fec = fespace->FEColl();
-   if (dynamic_cast<const ND_FECollection*>(fec))
-   {
-      const FiniteElement * nd_tri =
-         fec->FiniteElementForGeometry(Geometry::TRIANGLE);
-      if (nd_tri)
-      {
-         old_DoFTrans[Geometry::TRIANGLE] =
-            new ND_TriDofTransformation(nd_tri->GetOrder());
-      }
-
-      const FiniteElement * nd_tet =
-         fec->FiniteElementForGeometry(Geometry::TETRAHEDRON);
-      if (nd_tet)
-      {
-         old_DoFTrans[Geometry::TETRAHEDRON] =
-            new ND_TetDofTransformation(nd_tet->GetOrder());
-      }
-   }
 }

 void FiniteElementSpace::RefinementOperator
@@ -1553,7 +1462,7 @@ void FiniteElementSpace::RefinementOperator
   Mesh* mesh = fespace->GetMesh();
   const CoarseFineTransformations &rtrans = mesh->GetRefinementTransforms();

-   Array<int> dofs, vdofs, old_dofs, old_vdofs, old_Fo;
+   Array<int> dofs, vdofs, old_dofs, old_vdofs;

   int vdim = fespace->GetVDim();
   int old_ndofs = width / vdim;
@@ -1568,53 +1477,18 @@ void FiniteElementSpace::RefinementOperator

      subY.SetSize(lP.Height());

-      DofTransformation *doftrans = fespace->GetElementDofs(k, dofs);
+      fespace->GetElementDofs(k, dofs);
      old_elem_dof->GetRow(emb.parent, old_dofs);

-      if (!doftrans)
+      for (int vd = 0; vd < vdim; vd++)
      {
-         for (int vd = 0; vd < vdim; vd++)
-         {
-            dofs.Copy(vdofs);
-            fespace->DofsToVDofs(vd, vdofs);
-            old_dofs.Copy(old_vdofs);
-            fespace->DofsToVDofs(vd, old_vdofs, old_ndofs);
-            x.GetSubVector(old_vdofs, subX);
-            lP.Mult(subX, subY);
-            y.SetSubVector(vdofs, subY);
-         }
-      }
-      else
-      {
-         old_elem_fos->GetRow(emb.parent, old_Fo);
-         old_DoFTrans[geom]->SetFaceOrientations(old_Fo);
-
-         DofTransformation *new_doftrans = NULL;
-         VDofTransformation *vdoftrans =
-            dynamic_cast<VDofTransformation*>(doftrans);
-         if (vdoftrans)
-         {
-            new_doftrans = doftrans;
-            doftrans = vdoftrans->GetDofTransformation();
-         }
-
-         for (int vd = 0; vd < vdim; vd++)
-         {
-            dofs.Copy(vdofs);
-            fespace->DofsToVDofs(vd, vdofs);
-            old_dofs.Copy(old_vdofs);
-            fespace->DofsToVDofs(vd, old_vdofs, old_ndofs);
-            x.GetSubVector(old_vdofs, subX);
-            old_DoFTrans[geom]->InvTransformPrimal(subX);
-            lP.Mult(subX, subY);
-            doftrans->TransformPrimal(subY);
-            y.SetSubVector(vdofs, subY);
-         }
-
-         if (vdoftrans)
-         {
-            doftrans = new_doftrans;
-         }
+         dofs.Copy(vdofs);
+         fespace->DofsToVDofs(vd, vdofs);
+         old_dofs.Copy(old_vdofs);
+         fespace->DofsToVDofs(vd, old_vdofs, old_ndofs);
+         x.GetSubVector(old_vdofs, subX);
+         lP.Mult(subX, subY);
+         y.SetSubVector(vdofs, subY);
      }
   }
 }
@@ -1630,12 +1504,12 @@ void FiniteElementSpace::RefinementOperator
   Array<char> processed(fespace->GetVSize());
   processed = 0;

-   Array<int> f_dofs, c_dofs, f_vdofs, c_vdofs, old_Fo;
+   Array<int> f_dofs, c_dofs, f_vdofs, c_vdofs;

   int vdim = fespace->GetVDim();
   int old_ndofs = width / vdim;

-   Vector subY, subX, subYt, subXt;
+   Vector subY, subX;

   for (int k = 0; k < mesh->GetNE(); k++)
   {
@@ -1643,77 +1517,30 @@ void FiniteElementSpace::RefinementOperator
      const Geometry::Type geom = mesh->GetElementBaseGeometry(k);
      const DenseMatrix &lP = localP[geom](emb.matrix);

-      DofTransformation * doftrans = fespace->GetElementDofs(k, f_dofs);
+      fespace->GetElementDofs(k, f_dofs);
      old_elem_dof->GetRow(emb.parent, c_dofs);

-      if (!doftrans)
+      subY.SetSize(lP.Width());
+
+      for (int vd = 0; vd < vdim; vd++)
      {
-         subY.SetSize(lP.Width());
+         f_dofs.Copy(f_vdofs);
+         fespace->DofsToVDofs(vd, f_vdofs);
+         c_dofs.Copy(c_vdofs);
+         fespace->DofsToVDofs(vd, c_vdofs, old_ndofs);

-         for (int vd = 0; vd < vdim; vd++)
+         x.GetSubVector(f_vdofs, subX);
+
+         for (int p = 0; p < f_dofs.Size(); ++p)
         {
-            f_dofs.Copy(f_vdofs);
-            fespace->DofsToVDofs(vd, f_vdofs);
-            c_dofs.Copy(c_vdofs);
-            fespace->DofsToVDofs(vd, c_vdofs, old_ndofs);
-
-            x.GetSubVector(f_vdofs, subX);
-
-            for (int p = 0; p < f_dofs.Size(); ++p)
+            if (processed[DecodeDof(f_dofs[p])])
            {
-               if (processed[DecodeDof(f_dofs[p])])
-               {
-                  subX[p] = 0.0;
-               }
+               subX[p] = 0.0;
            }
-
-            lP.MultTranspose(subX, subY);
-            y.AddElementVector(c_vdofs, subY);
-         }
-      }
-      else
-      {
-         subYt.SetSize(lP.Width());
-
-         old_elem_fos->GetRow(emb.parent, old_Fo);
-         old_DoFTrans[geom]->SetFaceOrientations(old_Fo);
-
-         DofTransformation *new_doftrans = NULL;
-         VDofTransformation *vdoftrans =
-            dynamic_cast<VDofTransformation*>(doftrans);
-         if (vdoftrans)
-         {
-            new_doftrans = doftrans;
-            doftrans = vdoftrans->GetDofTransformation();
         }

-         for (int vd = 0; vd < vdim; vd++)
-         {
-            f_dofs.Copy(f_vdofs);
-            fespace->DofsToVDofs(vd, f_vdofs);
-            c_dofs.Copy(c_vdofs);
-            fespace->DofsToVDofs(vd, c_vdofs, old_ndofs);
-
-            x.GetSubVector(f_vdofs, subX);
-            old_DoFTrans[geom]->InvTransformPrimal(subX);
-
-            for (int p = 0; p < f_dofs.Size(); ++p)
-            {
-               if (processed[DecodeDof(f_dofs[p])])
-               {
-                  subX[p] = 0.0;
-               }
-            }
-
-            lP.MultTranspose(subX, subY);
-            doftrans->TransformPrimal(subY);
-            y.AddElementVector(c_vdofs, subY);
-         }
-
-         if (vdoftrans)
-         {
-            doftrans = new_doftrans;
-         }
+         lP.MultTranspose(subX, subY);
+         y.AddElementVector(c_vdofs, subY);
      }

      for (int p = 0; p < f_dofs.Size(); ++p)
@@ -1723,7 +1550,6 @@ void FiniteElementSpace::RefinementOperator
   }
 }

-/// TODO: Implement DofTransformation support
 FiniteElementSpace::DerefinementOperator::DerefinementOperator(
   const FiniteElementSpace *f_fes, const FiniteElementSpace *c_fes,
   BilinearFormIntegrator *mass_integ)
@@ -1881,11 +1707,8 @@ void FiniteElementSpace::GetLocalDerefinementMatrices(Geometry::Type geom,
 }

 SparseMatrix* FiniteElementSpace::DerefinementMatrix(int old_ndofs,
-                                                     const Table* old_elem_dof,
-                                                     const Table* old_elem_fos)
+                                                     const Table* old_elem_dof)
 {
-   /// TODO: Implement DofTransformation support
-
   MFEM_VERIFY(Nonconforming(), "Not implemented for conforming meshes.");
   MFEM_VERIFY(old_ndofs, "Missing previous (finer) space.");
   MFEM_VERIFY(ndofs <= old_ndofs, "Previous space is not finer.");
@@ -1991,7 +1814,6 @@ void FiniteElementSpace::Constructor(Mesh *mesh, NURBSExtension *NURBSext,
   this->ordering = (Ordering::Type) ordering;

   elem_dof = NULL;
-   elem_fos = NULL;
   face_dof = NULL;

   sequence = 0;
@@ -2019,8 +1841,6 @@ void FiniteElementSpace::Constructor(Mesh *mesh, NURBSExtension *NURBSext,
      UpdateNURBS();
      cP = cR = cR_hp = NULL;
      cP_is_set = false;
-
-      ConstructDoFTrans();
   }
   else
   {
@@ -2028,41 +1848,9 @@ void FiniteElementSpace::Constructor(Mesh *mesh, NURBSExtension *NURBSext,
      own_ext = 0;
      Construct();
   }
-
   BuildElementToDofTable();
 }

-void FiniteElementSpace::ConstructDoFTrans()
-{
-   DestroyDoFTrans();
-
-   VDoFTrans.SetVDim(vdim);
-   DoFTrans.SetSize(Geometry::NUM_GEOMETRIES);
-   for (int i=0; i<DoFTrans.Size(); i++)
-   {
-      DoFTrans[i] = NULL;
-   }
-   if (mesh->Dimension() < 3) { return; }
-   if (dynamic_cast<const ND_FECollection*>(fec))
-   {
-      const FiniteElement * nd_tri =
-         fec->FiniteElementForGeometry(Geometry::TRIANGLE);
-      if (nd_tri)
-      {
-         DoFTrans[Geometry::TRIANGLE] =
-            new ND_TriDofTransformation(nd_tri->GetOrder());
-      }
-
-      const FiniteElement * nd_tet =
-         fec->FiniteElementForGeometry(Geometry::TETRAHEDRON);
-      if (nd_tet)
-      {
-         DoFTrans[Geometry::TETRAHEDRON] =
-            new ND_TetDofTransformation(nd_tet->GetOrder());
-      }
-   }
-}
-
 NURBSExtension *FiniteElementSpace::StealNURBSext()
 {
   if (NURBSext && !own_ext)
@@ -2158,9 +1946,7 @@ void FiniteElementSpace::Construct()
               "Variable order space requires a nonconforming mesh.");

   elem_dof = NULL;
-   elem_fos = NULL;
   bdr_elem_dof = NULL;
-   bdr_elem_fos = NULL;
   face_dof = NULL;

   ndofs = 0;
@@ -2258,8 +2044,6 @@ void FiniteElementSpace::Construct()

   ndofs = nvdofs + nedofs + nfdofs + nbdofs;

-   ConstructDoFTrans();
-
   // record the current mesh sequence number to detect refinement etc.
   mesh_sequence = mesh->GetSequence();

@@ -2511,22 +2295,14 @@ int FiniteElementSpace::GetNVariants(int entity, int index) const
 static const char* msg_orders_changed =
   "Element orders changed, you need to Update() the space first.";

-DofTransformation *
-FiniteElementSpace::GetElementDofs(int elem, Array<int> &dofs) const
+void FiniteElementSpace::GetElementDofs(int elem, Array<int> &dofs) const
 {
   MFEM_VERIFY(!orders_changed, msg_orders_changed);

   if (elem_dof)
   {
      elem_dof->GetRow(elem, dofs);
-
-      if (DoFTrans[mesh->GetElementBaseGeometry(elem)])
-      {
-         Array<int> Fo;
-         elem_fos -> GetRow (elem, Fo);
-         DoFTrans[mesh->GetElementBaseGeometry(elem)]->SetFaceOrientations(Fo);
-      }
-      return DoFTrans[mesh->GetElementBaseGeometry(elem)];
+      return;
   }

   Array<int> V, E, Eo, F, Fo; // TODO: LocalArray
@@ -2550,11 +2326,6 @@ FiniteElementSpace::GetElementDofs(int elem, Array<int> &dofs) const
      {
         nfd += fec->GetNumDof(mesh->GetFaceGeometry(F[i]), order);
      }
-      if (DoFTrans[mesh->GetElementBaseGeometry(elem)])
-      {
-         DoFTrans[mesh->GetElementBaseGeometry(elem)]
-         -> SetFaceOrientations(Fo);
-      }
   }

   dofs.SetSize(0);
@@ -2612,7 +2383,6 @@ FiniteElementSpace::GetElementDofs(int elem, Array<int> &dofs) const
         dofs.Append(bbase + j);
      }
   }
-   return DoFTrans[mesh->GetElementBaseGeometry(elem)];
 }

 const FiniteElement *FiniteElementSpace::GetFE(int i) const
@@ -2645,27 +2415,18 @@ const FiniteElement *FiniteElementSpace::GetFE(int i) const
   return FE;
 }

-DofTransformation *
-FiniteElementSpace::GetBdrElementDofs(int bel, Array<int> &dofs) const
+void FiniteElementSpace::GetBdrElementDofs(int bel, Array<int> &dofs) const
 {
   MFEM_VERIFY(!orders_changed, msg_orders_changed);

   if (bdr_elem_dof)
   {
      bdr_elem_dof->GetRow(bel, dofs);
-
-      if (DoFTrans[mesh->GetBdrElementBaseGeometry(bel)])
-      {
-         Array<int> Fo;
-         bdr_elem_fos -> GetRow (bel, Fo);
-         DoFTrans[mesh->GetBdrElementBaseGeometry(bel)]->
-         SetFaceOrientations(Fo);
-      }
-      return DoFTrans[mesh->GetBdrElementBaseGeometry(bel)];
+      return;
   }

-   Array<int> V, E, Eo, Fo; // TODO: LocalArray
-   int F, oF;
+   Array<int> V, E, Eo; // TODO: LocalArray
+   int F, Fo;

   int dim = mesh->Dimension();
   auto geom = mesh->GetBdrElementGeometry(bel);
@@ -2684,17 +2445,7 @@ FiniteElementSpace::GetBdrElementDofs(int bel, Array<int> &dofs) const

   if (nv) { mesh->GetBdrElementVertices(bel, V); }
   if (ne) { mesh->GetBdrElementEdges(bel, E, Eo); }
-   if (nf)
-   {
-      mesh->GetBdrElementFace(bel, &F, &oF);
-
-      if (DoFTrans[mesh->GetBdrElementBaseGeometry(bel)])
-      {
-         Fo.Append(oF);
-         DoFTrans[mesh->GetBdrElementBaseGeometry(bel)]->
-         SetFaceOrientations(Fo);
-      }
-   }
+   if (nf) { mesh->GetBdrElementFace(bel, &F, &Fo); }

   dofs.SetSize(0);
   dofs.Reserve(nv*V.Size() + ne*E.Size() + nf);
@@ -2727,15 +2478,13 @@ FiniteElementSpace::GetBdrElementDofs(int bel, Array<int> &dofs) const
   if (nf) // face DOFs
   {
      int fbase = (var_face_dofs.Size() > 0) ? FindFaceDof(F, nf) : F*nf;
-      const int *ind = fec->GetDofOrdering(geom, order, oF);
+      const int *ind = fec->GetDofOrdering(geom, order, Fo);

      for (int j = 0; j < nf; j++)
      {
         dofs.Append(EncodeDof(nvdofs + nedofs + fbase, ind[j]));
      }
   }
-
-   return DoFTrans[mesh->GetBdrElementBaseGeometry(bel)];
 }

 int FiniteElementSpace::GetFaceDofs(int face, Array<int> &dofs,
@@ -3045,8 +2794,6 @@ void FiniteElementSpace::Destroy()
   }
   E2BFQ_array.SetSize(0);

-   DestroyDoFTrans();
-
   dof_elem_array.DeleteAll();
   dof_ldof_array.DeleteAll();

@@ -3059,9 +2806,7 @@ void FiniteElementSpace::Destroy()
   else
   {
      delete elem_dof;
-      delete elem_fos;
      delete bdr_elem_dof;
-      delete bdr_elem_fos;
      delete face_dof;

      delete [] bdofs;
@@ -3069,15 +2814,6 @@ void FiniteElementSpace::Destroy()
   ceed::RemoveBasisAndRestriction(this);
 }

-void FiniteElementSpace::DestroyDoFTrans()
-{
-   for (int i = 0; i < DoFTrans.Size(); i++)
-   {
-      delete DoFTrans[i];
-   }
-   DoFTrans.SetSize(0);
-}
-
 void FiniteElementSpace::GetTransferOperator(
   const FiniteElementSpace &coarse_fes, OperatorHandle &T) const
 {
@@ -3095,8 +2831,6 @@ void FiniteElementSpace::GetTransferOperator(
      }
      T.Reset(RefinementMatrix_main(coarse_fes.GetNDofs(),
                                    coarse_fes.GetElementToDofTable(),
-                                    coarse_fes.
-                                    GetElementToFaceOrientationTable(),
                                    localP));
   }
   else
@@ -3199,7 +2933,6 @@ void FiniteElementSpace::Update(bool want_transform)
   }

   Table* old_elem_dof = NULL;
-   Table* old_elem_fos = NULL;
   int old_ndofs;
   bool old_orders_changed = orders_changed;

@@ -3207,9 +2940,7 @@ void FiniteElementSpace::Update(bool want_transform)
   if (want_transform)
   {
      old_elem_dof = elem_dof;
-      old_elem_fos = elem_fos;
      elem_dof = NULL;
-      elem_fos = NULL;
      old_ndofs = ndofs;
   }

@@ -3235,18 +2966,15 @@ void FiniteElementSpace::Update(bool want_transform)
         {
            if (Th.Type() != Operator::MFEM_SPARSEMAT)
            {
-               Th.Reset(new RefinementOperator(this, old_elem_dof,
-                                               old_elem_fos, old_ndofs));
+               Th.Reset(new RefinementOperator(this, old_elem_dof, old_ndofs));
               // The RefinementOperator takes ownership of 'old_elem_dof', so
               // we no longer own it:
               old_elem_dof = NULL;
-               old_elem_fos = NULL;
            }
            else
            {
               // calculate fully assembled matrix
-               Th.Reset(RefinementMatrix(old_ndofs, old_elem_dof,
-                                         old_elem_fos));
+               Th.Reset(RefinementMatrix(old_ndofs, old_elem_dof));
            }
            break;
         }
@@ -3254,7 +2982,7 @@ void FiniteElementSpace::Update(bool want_transform)
         case Mesh::DEREFINE:
         {
            BuildConformingInterpolation();
-            Th.Reset(DerefinementMatrix(old_ndofs, old_elem_dof, old_elem_fos));
+            Th.Reset(DerefinementMatrix(old_ndofs, old_elem_dof));
            if (cP && cR)
            {
               Th.SetOperatorOwner(false);
@@ -3269,7 +2997,6 @@ void FiniteElementSpace::Update(bool want_transform)
      }

      delete old_elem_dof;
-      delete old_elem_fos;
   }
 }

@@ -16,7 +16,6 @@
 #include "../linalg/sparsemat.hpp"
 #include "../mesh/mesh.hpp"
 #include "fe_coll.hpp"
-#include "doftrans.hpp"
 #include "restriction.hpp"
 #include <iostream>
 #include <unordered_map>
@@ -129,9 +128,7 @@ protected:

   // precalculated DOFs for each element, boundary element, and face
   mutable Table *elem_dof; // owned (except in NURBS FE space)
-   mutable Table *elem_fos; // face orientations by element index
   mutable Table *bdr_elem_dof; // owned (except in NURBS FE space)
-   mutable Table *bdr_elem_fos; // bdr face orientations by bdr element index
   mutable Table *face_dof; // owned; in var-order space contains variant 0 DOFs

   Array<int> dof_elem_array, dof_ldof_array;
@@ -140,9 +137,6 @@ protected:
   int own_ext;
   mutable Array<int> face_to_be; // NURBS FE space only

-   Array<DofTransformation*> DoFTrans;
-   mutable VDofTransformation VDoFTrans;
-
   /** Matrix representing the prolongation from the global conforming dofs to
       a set of intermediate partially conforming dofs, e.g. the dofs associated
       with a "cut" space on a non-conforming mesh. */
@@ -170,7 +164,7 @@ protected:
                + 8 * (int)std::get<3>(k);
      }
   };
-   using map_L2F = std::unordered_map<const key_face,FaceRestriction*,key_hash>;
+   using map_L2F = std::unordered_map<const key_face,Operator*,key_hash>;
   mutable map_L2F L2F;

   mutable Array<QuadratureInterpolator*> E2Q_array;
@@ -195,9 +189,6 @@ protected:
   void Construct();
   void Destroy();

-   void ConstructDoFTrans();
-   void DestroyDoFTrans();
-
   void BuildElementToDofTable() const;
   void BuildBdrElementToDofTable() const;
   void BuildFaceToDofTable() const;
@@ -292,19 +283,12 @@ protected:
      const FiniteElementSpace* fespace;
      DenseTensor localP[Geometry::NumGeom];
      Table* old_elem_dof; // Owned.
-      Table* old_elem_fos; // Owned.
-
-      Array<DofTransformation*> old_DoFTrans;
-      mutable VDofTransformation old_VDoFTrans;
-
-      void ConstructDoFTrans();

   public:
      /** Construct the operator based on the elem_dof table of the original
          (coarse) space. The class takes ownership of the table. */
      RefinementOperator(const FiniteElementSpace* fespace,
-                         Table *old_elem_dof/*takes ownership*/,
-                         Table *old_elem_fos/*takes ownership*/, int old_ndofs);
+                         Table *old_elem_dof/*takes ownership*/, int old_ndofs);
      RefinementOperator(const FiniteElementSpace *fespace,
                         const FiniteElementSpace *coarse_fes);
      virtual void Mult(const Vector &x, Vector &y) const;
@@ -318,7 +302,6 @@ protected:
      const FiniteElementSpace *fine_fes; // Not owned.
      DenseTensor localR[Geometry::NumGeom];
      Table *coarse_elem_dof; // Owned.
-      // Table *coarse_elem_fos; // Owned.
      Table coarse_to_fine;
      Array<int> coarse_to_ref_type;
      Array<Geometry::Type> ref_type_to_geom;
@@ -340,7 +323,6 @@ protected:
       the same vector dimension, vdim. */
   SparseMatrix *RefinementMatrix_main(const int coarse_ndofs,
                                       const Table &coarse_elem_dof,
-                                       const Table *coarse_elem_fos,
                                       const DenseTensor localP[]) const;

   void GetLocalRefinementMatrices(Geometry::Type geom,
@@ -351,12 +333,10 @@ protected:
   /** Calculate explicit GridFunction interpolation matrix (after mesh
       refinement). NOTE: consider using the RefinementOperator class instead
       of the fully assembled matrix, which can take a lot of memory. */
-   SparseMatrix* RefinementMatrix(int old_ndofs, const Table* old_elem_dof,
-                                  const Table* old_elem_fos);
+   SparseMatrix* RefinementMatrix(int old_ndofs, const Table* old_elem_dof);

   /// Calculate GridFunction restriction matrix after mesh derefinement.
-   SparseMatrix* DerefinementMatrix(int old_ndofs, const Table* old_elem_dof,
-                                    const Table* old_elem_fos);
+   SparseMatrix* DerefinementMatrix(int old_ndofs, const Table* old_elem_dof);

   /** @brief Return in @a localP the local refinement matrices that map
       between fespaces after mesh refinement. */
@@ -508,7 +488,7 @@ public:
   const Operator *GetElementRestriction(ElementDofOrdering e_ordering) const;

   /// Return an Operator that converts L-vectors to E-vectors on each face.
-   virtual const FaceRestriction *GetFaceRestriction(
+   virtual const Operator *GetFaceRestriction(
      ElementDofOrdering e_ordering, FaceType,
      L2FaceValues mul = L2FaceValues::DoubleValued) const;

@@ -634,11 +614,10 @@ public:
   int GetBdrAttribute(int i) const { return mesh->GetBdrAttribute(i); }

   /// Returns indices of degrees of freedom of element 'elem'.
-   virtual DofTransformation *GetElementDofs(int elem, Array<int> &dofs) const;
+   virtual void GetElementDofs(int elem, Array<int> &dofs) const;

   /// Returns indices of degrees of freedom for boundary element 'bel'.
-   virtual DofTransformation *GetBdrElementDofs(int bel,
-                                                Array<int> &dofs) const;
+   virtual void GetBdrElementDofs(int bel, Array<int> &dofs) const;

   /** @brief Returns the indices of the degrees of freedom for the specified
       face, including the DOFs for the edges and the vertices of the face. */
@@ -687,10 +666,10 @@ public:
   static void AdjustVDofs(Array<int> &vdofs);

   /// Returns indexes of degrees of freedom in array dofs for i'th element.
-   DofTransformation *GetElementVDofs(int i, Array<int> &vdofs) const;
+   void GetElementVDofs(int i, Array<int> &vdofs) const;

   /// Returns indexes of degrees of freedom for i'th boundary element.
-   DofTransformation *GetBdrElementVDofs(int i, Array<int> &vdofs) const;
+   void GetBdrElementVDofs(int i, Array<int> &vdofs) const;

   /// Returns indexes of degrees of freedom for i'th face element (2D and 3D).
   void GetFaceVDofs(int i, Array<int> &vdofs) const;
@@ -716,8 +695,6 @@ public:
       is preserved. */
   void ReorderElementToDofTable();

-   const Table *GetElementToFaceOrientationTable() const { return elem_fos; }
-
   /** @brief Return a reference to the internal Table that stores the lists of
       scalar dofs, for each mesh element, as returned by GetElementDofs(). */
   const Table &GetElementToDofTable() const { return *elem_dof; }
@@ -1,46 +0,0 @@
-// Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-// LICENSE and NOTICE for details. LLNL-CODE-806117.
-//
-// This file is part of the MFEM library. For more information and source code
-// availability visit https://mfem.org.
-//
-// MFEM is free software; you can redistribute it and/or modify it under the
-// terms of the BSD-3 license. We welcome feedback and contributions, see file
-// CONTRIBUTING.md for details.
-
-#ifndef FMS_CONVERT
-#define FMS_CONVERT
-
-#include "../config/config.hpp"
-#include "datacollection.hpp"
-
-#ifdef MFEM_USE_FMS
-#include <fms.h>
-
-namespace mfem
-{
-
-/** In-memory conversion of FMS data collection to an MFEM data collection.
-    @param dc The FMS data collection to convert.
-    @param[out] mfem_dc A pointer to a new MFEM DataCollection containing the
-    FMS data.
-    @return 0 on success; non-zero on failure.
-*/
-int FmsDataCollectionToDataCollection(FmsDataCollection dc,
-                                      DataCollection **mfem_dc);
-
-/** In-memory conversion of MFEM data collection to an FMS data collection.
-    @param mfem_dc The MFEM data collection to convert.
-    @param[out] dc A pointer to a new FmsDataCollection containing the MFEM
-    data.
-    @return 0 on success; non-zero on failure.
-*/
-int DataCollectionToFmsDataCollection(DataCollection *mfem_dc,
-                                      FmsDataCollection *dc);
-
-} // namespace mfem
-
-#endif
-
-#endif
@@ -1,167 +0,0 @@
-// Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-// LICENSE and NOTICE for details. LLNL-CODE-806117.
-//
-// This file is part of the MFEM library. For more information and source code
-// availability visit https://mfem.org.
-//
-// MFEM is free software; you can redistribute it and/or modify it under the
-// terms of the BSD-3 license. We welcome feedback and contributions, see file
-// CONTRIBUTING.md for details.
-
-#include "../config/config.hpp"
-
-#ifdef MFEM_USE_FMS
-
-#include "fem.hpp"
-#include "../general/text.hpp"
-
-#include <fmsio.h>
-
-#include <string>
-#include <sstream>
-
-namespace mfem
-{
-
-// class FMSDataCollection implementation
-
-FMSDataCollection::FMSDataCollection(const std::string& coll_name,
-                                     Mesh *mesh)
-   : DataCollection(coll_name, mesh),
-     fms_protocol("ascii")
-{
-   appendRankToFileName = false; // always include rank in file names
-   cycle = 0;                   // always include cycle in directory names
-}
-
-#ifdef MFEM_USE_MPI
-
-FMSDataCollection::FMSDataCollection(MPI_Comm comm,
-                                     const std::string& coll_name,
-                                     Mesh *mesh)
-   : DataCollection(coll_name, mesh),
-     fms_protocol("ascii")
-{
-   m_comm = comm;
-   MPI_Comm_rank(comm, &myid);
-   MPI_Comm_size(comm, &num_procs);
-   appendRankToFileName = true; // always include rank in file names
-   cycle = 0;                   // always include cycle in directory names
-}
-
-#endif
-
-FMSDataCollection::~FMSDataCollection()
-{
-   // empty
-}
-
-void FMSDataCollection::Save()
-{
-   // Convert this to FmsDataCollection.
-
-   FmsDataCollection dc;
-   if (DataCollectionToFmsDataCollection(this, &dc) == 0)
-   {
-      std::string root(RootFileName());
-      int err = FmsIOWrite(root.c_str(), fms_protocol.c_str(), dc);
-      FmsDataCollectionDestroy(&dc);
-      if (err)
-      {
-         MFEM_ABORT("Error creating FMS file: " << root);
-      }
-   }
-   else
-   {
-      MFEM_ABORT("Error converting data collection");
-   }
-}
-
-void FMSDataCollection::Load(int cycle)
-{
-   DeleteAll();
-   this->cycle = cycle;
-
-   FmsDataCollection dc;
-   std::string root(RootFileName());
-   int err = FmsIORead(root.c_str(), fms_protocol.c_str(), &dc);
-
-   if (err == 0)
-   {
-      DataCollection *mdc = nullptr;
-      if (FmsDataCollectionToDataCollection(dc,&mdc) == 0)
-      {
-         // Tell the data collection we read that it does not own data.
-         // We will steal its data.
-         mdc->SetOwnData(false);
-
-         SetCycle(mdc->GetCycle());
-         SetTime(mdc->GetTime());
-         SetTimeStep(mdc->GetTimeStep());
-         name = mdc->GetCollectionName();
-
-         // Set mdc's mesh as our mesh.
-         SetMesh(mdc->GetMesh());
-
-         // Set mdc's fields/qfields as ours.
-         std::vector<std::string> names;
-         for (const auto &pair : mdc->GetFieldMap())
-         {
-            names.push_back(pair.first);
-            RegisterField(pair.first, pair.second);
-         }
-         for (const auto &name : names)
-         {
-            mdc->DeregisterField(name);
-         }
-
-         names.clear();
-         for (const auto &pair : mdc->GetQFieldMap())
-         {
-            names.push_back(pair.first);
-            RegisterQField(pair.first, pair.second);
-         }
-         for (const auto &name : names)
-         {
-            mdc->DeregisterField(name);
-         }
-
-         // Indicate that we own the data.
-         SetOwnData(true);
-
-         // Delete mdc. We stole its contents.
-         delete mdc;
-      }
-      FmsDataCollectionDestroy(&dc);
-   }
-   else
-   {
-      MFEM_ABORT("Error reading data collection: " << root);
-   }
-}
-
-void FMSDataCollection::SetProtocol(const std::string &protocol)
-{
-   fms_protocol = protocol;
-}
-
-std::string FMSDataCollection::RootFileName()
-{
-   std::string res;
-   if (pad_digits_cycle)
-   {
-      res = prefix_path + name + "_" +
-            to_padded_string(cycle, pad_digits_cycle) +
-            ".fms";
-   }
-   else
-   {
-      res = prefix_path + name + ".fms";
-   }
-   return res;
-}
-
-} // namespace mfem
-
-#endif
@@ -1,74 +0,0 @@
-// Copyright (c) 2010-2021, Lawrence Livermore National Security, LLC. Produced
-// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
-// LICENSE and NOTICE for details. LLNL-CODE-806117.
-//
-// This file is part of the MFEM library. For more information and source code
-// availability visit https://mfem.org.
-//
-// MFEM is free software; you can redistribute it and/or modify it under the
-// terms of the BSD-3 license. We welcome feedback and contributions, see file
-// CONTRIBUTING.md for details.
-
-#ifndef MFEM_FMSDATACOLLECTION
-#define MFEM_FMSDATACOLLECTION
-
-#include "../config/config.hpp"
-
-#ifdef MFEM_USE_FMS
-
-#include "datacollection.hpp"
-#include <fms.h>
-
-namespace mfem
-{
-
-/** @brief Data collection that uses FMS. */
-/** FMSDataCollection lets MFEM read/write data using FMS.
-
-    For more information, see:
-    - FMS project, https://ceed.exascaleproject.org/fms/
-*/
-
-/// Data collection with FMS I/O routines
-class FMSDataCollection : public DataCollection
-{
-protected:
-   // file name helpers
-
-   /// Returns file name for the current cycle
-   std::string RootFileName();
-
-   // holds currently active i/o protocol
-   std::string fms_protocol;
-
-public:
-   /// Constructor. The collection name is used when saving the data.
-   /** If @a mesh is NULL, then the mesh can be set later by calling either
-       SetMesh() or Load(). The latter works only in serial. */
-   FMSDataCollection(const std::string& collection_name,
-                     Mesh *mesh = NULL);
-#ifdef MFEM_USE_MPI
-   /// Construct a parallel FMSDataCollection.
-   FMSDataCollection(MPI_Comm comm, const std::string& collection_name,
-                     Mesh *mesh = NULL);
-#endif
-
-   /// We will delete the mesh and fields if we own them
-   virtual ~FMSDataCollection();
-
-   /// Set the FMS relay i/o protocol to use
-   /** Supported options: ascii (default), json, yaml, hdf5 */
-   void SetProtocol(const std::string &protocol);
-
-   /// Save the collection and a FMS blueprint root file
-   virtual void Save();
-
-   /// Load the collection based blueprint data
-   virtual void Load(int cycle = 0);
-};
-
-} // namespace mfem
-
-#endif
-
-#endif
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
psocratis	2a31d5ebc0	make style	2021-06-28 19:15:44 -07:00
psocratis	e8f2e129be	Adding Mesh::ExtractSurfaceMesh	2021-06-28 19:11:01 -07:00
psocratis	aaf8bcd0b0	revert pmesh.hpp to master	2021-06-28 14:44:30 -07:00
psocratis	3e6b09835c	removing pmesh extraction dev	2021-06-28 14:42:24 -07:00
psocratis	674e39e37d	minor	2021-06-28 14:35:14 -07:00
psocratis	db8407e363	identified bug in ParMesh::ExtractMesh_	2021-06-26 14:31:50 -07:00
psocratis	a8f60b6984	extracting a sub parmesh from a parmesh in 2D	2021-06-25 21:05:54 -07:00
psocratis	84afb563e2	adding example extracting a surface from a periodic mesh	2021-06-22 19:02:10 -07:00
psocratis	b392800178	Fixed orientation issue for surface meshes	2021-06-22 19:00:41 -07:00
psocratis	4828306a43	mesh/surface extraction for periodic meshes	2021-06-21 20:05:21 -07:00
psocratis	4882e5707c	Build Prolongation maps between Subsurfaces/submeshes and mesh	2021-06-18 17:50:43 -07:00
psocratis	ed3eb071fb	extracting surface meshes	2021-06-17 19:54:48 -07:00
psocratis	9e11d5edb3	fixing makefile header	2021-06-17 10:41:51 -07:00
psocratis	d476650a29	Serial mesh ->submesh extraction	2021-06-16 19:46:25 -07:00