125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
// Copyright (c) 2010-2022, 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.
|
|
//
|
|
// -------------------------------------------------------------------
|
|
// Load DC Miniapp: Visualize fields saved via DataCollection classes
|
|
// -------------------------------------------------------------------
|
|
//
|
|
// This miniapp loads and visualizes (in GLVis) previously saved data using
|
|
// DataCollection sub-classes, see e.g. Example 5/5p. Currently, only the
|
|
// VisItDataCollection class is supported.
|
|
//
|
|
// Compile with: make load-dc
|
|
//
|
|
// Serial sample runs:
|
|
// > load-dc -r ../../examples/Example5
|
|
//
|
|
// Parallel sample runs:
|
|
// > mpirun -np 4 load-dc -r ../../examples/Example5-Parallel
|
|
|
|
#include "mfem.hpp"
|
|
|
|
using namespace std;
|
|
using namespace mfem;
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
#ifdef MFEM_USE_MPI
|
|
MPI_Session mpi;
|
|
if (!mpi.Root()) { mfem::out.Disable(); mfem::err.Disable(); }
|
|
Hypre::Init();
|
|
#endif
|
|
|
|
// Parse command-line options.
|
|
const char *coll_name = NULL;
|
|
int cycle = 0;
|
|
bool visualization = true;
|
|
|
|
OptionsParser args(argc, argv);
|
|
args.AddOption(&coll_name, "-r", "--root-file",
|
|
"Set the VisIt data collection root file prefix.", true);
|
|
args.AddOption(&cycle, "-c", "--cycle", "Set the cycle index to read.");
|
|
args.AddOption(&visualization, "-vis", "--visualization", "-no-vis",
|
|
"--no-visualization",
|
|
"Enable or disable GLVis visualization.");
|
|
args.Parse();
|
|
if (!args.Good())
|
|
{
|
|
args.PrintUsage(mfem::out);
|
|
return 1;
|
|
}
|
|
args.PrintOptions(mfem::out);
|
|
|
|
#ifdef MFEM_USE_MPI
|
|
VisItDataCollection dc(MPI_COMM_WORLD, coll_name);
|
|
#else
|
|
VisItDataCollection dc(coll_name);
|
|
#endif
|
|
dc.Load(cycle);
|
|
|
|
if (dc.Error() != DataCollection::NO_ERROR)
|
|
{
|
|
mfem::out << "Error loading VisIt data collection: " << coll_name << endl;
|
|
return 1;
|
|
}
|
|
|
|
typedef DataCollection::FieldMapType fields_t;
|
|
const fields_t &fields = dc.GetFieldMap();
|
|
// Print the names of all fields.
|
|
mfem::out << "fields: [ ";
|
|
for (fields_t::const_iterator it = fields.begin(); it != fields.end(); ++it)
|
|
{
|
|
if (it != fields.begin()) { mfem::out << ", "; }
|
|
mfem::out << it->first;
|
|
}
|
|
mfem::out << " ]" << endl;
|
|
|
|
if (!visualization) { return 0; }
|
|
|
|
char vishost[] = "localhost";
|
|
int visport = 19916;
|
|
|
|
// Visualize all fields. If there are no fields, visualize the mesh.
|
|
for (fields_t::const_iterator it = fields.begin();
|
|
it != fields.end() || fields.begin() == fields.end(); ++it)
|
|
{
|
|
socketstream sol_sock(vishost, visport);
|
|
bool succeeded = sol_sock.good();
|
|
#ifdef MFEM_USE_MPI
|
|
bool all_succeeded;
|
|
MPI_Allreduce(&succeeded, &all_succeeded, 1,
|
|
MPI_C_BOOL, MPI_LAND, MPI_COMM_WORLD);
|
|
succeeded = all_succeeded;
|
|
#endif
|
|
if (!succeeded)
|
|
{
|
|
mfem::out << "Connection to " << vishost << ':' << visport
|
|
<< " failed." << endl;
|
|
return 1;
|
|
}
|
|
#ifdef MFEM_USE_MPI
|
|
sol_sock << "parallel " << mpi.WorldSize() << " " << mpi.WorldRank()
|
|
<< "\n";
|
|
#endif
|
|
if (fields.begin() == fields.end())
|
|
{
|
|
// no fields, just mesh:
|
|
sol_sock << "mesh\n" << *dc.GetMesh() << flush;
|
|
break;
|
|
}
|
|
sol_sock.precision(8);
|
|
sol_sock << "solution\n" << *dc.GetMesh() << *it->second
|
|
<< "window_title '" << it->first << "'\n" << flush;
|
|
}
|
|
|
|
return 0;
|
|
}
|