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mfem/fem/integ/bilininteg_hcurl_kernels.cpp
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// Copyright (c) 2010-2025, 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 "bilininteg_hcurl_kernels.hpp"
namespace mfem
{
namespace internal
{
void PAHcurlMassAssembleDiagonal2D(const int D1D,
const int Q1D,
const int NE,
const bool symmetric,
const Array<real_t> &bo,
const Array<real_t> &bc,
const Vector &pa_data,
Vector &diag)
{
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto Bc = Reshape(bc.Read(), Q1D, D1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, symmetric ? 3 : 4, NE);
auto D = Reshape(diag.ReadWrite(), 2*(D1D-1)*D1D, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int VDIM = 2;
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
real_t mass[MAX_Q1D];
for (int dy = 0; dy < D1Dy; ++dy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
mass[qx] = 0.0;
for (int qy = 0; qy < Q1D; ++qy)
{
const real_t wy = (c == 1) ? Bo(qy,dy) : Bc(qy,dy);
mass[qx] += wy * wy * ((c == 0) ? op(qx,qy,0,e) :
op(qx,qy,symmetric ? 2 : 3, e));
}
}
for (int dx = 0; dx < D1Dx; ++dx)
{
for (int qx = 0; qx < Q1D; ++qx)
{
const real_t wx = ((c == 0) ? Bo(qx,dx) : Bc(qx,dx));
D(dx + (dy * D1Dx) + osc, e) += mass[qx] * wx * wx;
}
}
}
osc += D1Dx * D1Dy;
} // loop c
}); // end of element loop
}
void PAHcurlMassAssembleDiagonal3D(const int D1D,
const int Q1D,
const int NE,
const bool symmetric,
const Array<real_t> &bo,
const Array<real_t> &bc,
const Vector &pa_data,
Vector &diag)
{
MFEM_VERIFY(D1D <= DeviceDofQuadLimits::Get().HCURL_MAX_D1D,
"Error: D1D > MAX_D1D");
MFEM_VERIFY(Q1D <= DeviceDofQuadLimits::Get().HCURL_MAX_Q1D,
"Error: Q1D > MAX_Q1D");
constexpr static int VDIM = 3;
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto Bc = Reshape(bc.Read(), Q1D, D1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, Q1D, symmetric ? 6 : 9, NE);
auto D = Reshape(diag.ReadWrite(), 3*(D1D-1)*D1D*D1D, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y, z components
{
const int D1Dz = (c == 2) ? D1D - 1 : D1D;
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
const int opc = (c == 0) ? 0 : ((c == 1) ? (symmetric ? 3 : 4) :
(symmetric ? 5 : 8));
real_t mass[MAX_Q1D];
for (int dz = 0; dz < D1Dz; ++dz)
{
for (int dy = 0; dy < D1Dy; ++dy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
mass[qx] = 0.0;
for (int qy = 0; qy < Q1D; ++qy)
{
const real_t wy = (c == 1) ? Bo(qy,dy) : Bc(qy,dy);
for (int qz = 0; qz < Q1D; ++qz)
{
const real_t wz = (c == 2) ? Bo(qz,dz) : Bc(qz,dz);
mass[qx] += wy * wy * wz * wz * op(qx,qy,qz,opc,e);
}
}
}
for (int dx = 0; dx < D1Dx; ++dx)
{
for (int qx = 0; qx < Q1D; ++qx)
{
const real_t wx = ((c == 0) ? Bo(qx,dx) : Bc(qx,dx));
D(dx + ((dy + (dz * D1Dy)) * D1Dx) + osc, e) += mass[qx] * wx * wx;
}
}
}
}
osc += D1Dx * D1Dy * D1Dz;
} // loop c
}); // end of element loop
}
void PAHcurlMassApply2D(const int D1D,
const int Q1D,
const int NE,
const bool symmetric,
const Array<real_t> &bo,
const Array<real_t> &bc,
const Array<real_t> &bot,
const Array<real_t> &bct,
const Vector &pa_data,
const Vector &x,
Vector &y)
{
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto Bc = Reshape(bc.Read(), Q1D, D1D);
auto Bot = Reshape(bot.Read(), D1D-1, Q1D);
auto Bct = Reshape(bct.Read(), D1D, Q1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, symmetric ? 3 : 4, NE);
auto X = Reshape(x.Read(), 2*(D1D-1)*D1D, NE);
auto Y = Reshape(y.ReadWrite(), 2*(D1D-1)*D1D, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int VDIM = 2;
constexpr static int MAX_D1D = DofQuadLimits::HCURL_MAX_D1D;
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
real_t mass[MAX_Q1D][MAX_Q1D][VDIM];
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
for (int c = 0; c < VDIM; ++c)
{
mass[qy][qx][c] = 0.0;
}
}
}
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
for (int dy = 0; dy < D1Dy; ++dy)
{
real_t massX[MAX_Q1D];
for (int qx = 0; qx < Q1D; ++qx)
{
massX[qx] = 0.0;
}
for (int dx = 0; dx < D1Dx; ++dx)
{
const real_t t = X(dx + (dy * D1Dx) + osc, e);
for (int qx = 0; qx < Q1D; ++qx)
{
massX[qx] += t * ((c == 0) ? Bo(qx,dx) : Bc(qx,dx));
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
const real_t wy = (c == 1) ? Bo(qy,dy) : Bc(qy,dy);
for (int qx = 0; qx < Q1D; ++qx)
{
mass[qy][qx][c] += massX[qx] * wy;
}
}
}
osc += D1Dx * D1Dy;
} // loop (c) over components
// Apply D operator.
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
const real_t O11 = op(qx,qy,0,e);
const real_t O21 = op(qx,qy,1,e);
const real_t O12 = symmetric ? O21 : op(qx,qy,2,e);
const real_t O22 = symmetric ? op(qx,qy,2,e) : op(qx,qy,3,e);
const real_t massX = mass[qy][qx][0];
const real_t massY = mass[qy][qx][1];
mass[qy][qx][0] = (O11*massX)+(O12*massY);
mass[qy][qx][1] = (O21*massX)+(O22*massY);
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
real_t massX[MAX_D1D];
for (int dx = 0; dx < D1Dx; ++dx)
{
massX[dx] = 0.0;
}
for (int qx = 0; qx < Q1D; ++qx)
{
for (int dx = 0; dx < D1Dx; ++dx)
{
massX[dx] += mass[qy][qx][c] * ((c == 0) ? Bot(dx,qx) : Bct(dx,qx));
}
}
for (int dy = 0; dy < D1Dy; ++dy)
{
const real_t wy = (c == 1) ? Bot(dy,qy) : Bct(dy,qy);
for (int dx = 0; dx < D1Dx; ++dx)
{
Y(dx + (dy * D1Dx) + osc, e) += massX[dx] * wy;
}
}
osc += D1Dx * D1Dy;
} // loop c
} // loop qy
}); // end of element loop
}
void PAHcurlMassApply3D(const int D1D,
const int Q1D,
const int NE,
const bool symmetric,
const Array<real_t> &bo,
const Array<real_t> &bc,
const Array<real_t> &bot,
const Array<real_t> &bct,
const Vector &pa_data,
const Vector &x,
Vector &y)
{
MFEM_VERIFY(D1D <= DeviceDofQuadLimits::Get().HCURL_MAX_D1D,
"Error: D1D > MAX_D1D");
MFEM_VERIFY(Q1D <= DeviceDofQuadLimits::Get().HCURL_MAX_Q1D,
"Error: Q1D > MAX_Q1D");
constexpr static int VDIM = 3;
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto Bc = Reshape(bc.Read(), Q1D, D1D);
auto Bot = Reshape(bot.Read(), D1D-1, Q1D);
auto Bct = Reshape(bct.Read(), D1D, Q1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, Q1D, symmetric ? 6 : 9, NE);
auto X = Reshape(x.Read(), 3*(D1D-1)*D1D*D1D, NE);
auto Y = Reshape(y.ReadWrite(), 3*(D1D-1)*D1D*D1D, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int MAX_D1D = DofQuadLimits::HCURL_MAX_D1D;
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
real_t mass[MAX_Q1D][MAX_Q1D][MAX_Q1D][VDIM];
for (int qz = 0; qz < Q1D; ++qz)
{
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
for (int c = 0; c < VDIM; ++c)
{
mass[qz][qy][qx][c] = 0.0;
}
}
}
}
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y, z components
{
const int D1Dz = (c == 2) ? D1D - 1 : D1D;
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
for (int dz = 0; dz < D1Dz; ++dz)
{
real_t massXY[MAX_Q1D][MAX_Q1D];
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
massXY[qy][qx] = 0.0;
}
}
for (int dy = 0; dy < D1Dy; ++dy)
{
real_t massX[MAX_Q1D];
for (int qx = 0; qx < Q1D; ++qx)
{
massX[qx] = 0.0;
}
for (int dx = 0; dx < D1Dx; ++dx)
{
const real_t t = X(dx + ((dy + (dz * D1Dy)) * D1Dx) + osc, e);
for (int qx = 0; qx < Q1D; ++qx)
{
massX[qx] += t * ((c == 0) ? Bo(qx,dx) : Bc(qx,dx));
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
const real_t wy = (c == 1) ? Bo(qy,dy) : Bc(qy,dy);
for (int qx = 0; qx < Q1D; ++qx)
{
const real_t wx = massX[qx];
massXY[qy][qx] += wx * wy;
}
}
}
for (int qz = 0; qz < Q1D; ++qz)
{
const real_t wz = (c == 2) ? Bo(qz,dz) : Bc(qz,dz);
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
mass[qz][qy][qx][c] += massXY[qy][qx] * wz;
}
}
}
}
osc += D1Dx * D1Dy * D1Dz;
} // loop (c) over components
// Apply D operator.
for (int qz = 0; qz < Q1D; ++qz)
{
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
const real_t O11 = op(qx,qy,qz,0,e);
const real_t O12 = op(qx,qy,qz,1,e);
const real_t O13 = op(qx,qy,qz,2,e);
const real_t O21 = symmetric ? O12 : op(qx,qy,qz,3,e);
const real_t O22 = symmetric ? op(qx,qy,qz,3,e) : op(qx,qy,qz,4,e);
const real_t O23 = symmetric ? op(qx,qy,qz,4,e) : op(qx,qy,qz,5,e);
const real_t O31 = symmetric ? O13 : op(qx,qy,qz,6,e);
const real_t O32 = symmetric ? O23 : op(qx,qy,qz,7,e);
const real_t O33 = symmetric ? op(qx,qy,qz,5,e) : op(qx,qy,qz,8,e);
const real_t massX = mass[qz][qy][qx][0];
const real_t massY = mass[qz][qy][qx][1];
const real_t massZ = mass[qz][qy][qx][2];
mass[qz][qy][qx][0] = (O11*massX)+(O12*massY)+(O13*massZ);
mass[qz][qy][qx][1] = (O21*massX)+(O22*massY)+(O23*massZ);
mass[qz][qy][qx][2] = (O31*massX)+(O32*massY)+(O33*massZ);
}
}
}
for (int qz = 0; qz < Q1D; ++qz)
{
real_t massXY[MAX_D1D][MAX_D1D];
osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y, z components
{
const int D1Dz = (c == 2) ? D1D - 1 : D1D;
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
for (int dy = 0; dy < D1Dy; ++dy)
{
for (int dx = 0; dx < D1Dx; ++dx)
{
massXY[dy][dx] = 0.0;
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
real_t massX[MAX_D1D];
for (int dx = 0; dx < D1Dx; ++dx)
{
massX[dx] = 0;
}
for (int qx = 0; qx < Q1D; ++qx)
{
for (int dx = 0; dx < D1Dx; ++dx)
{
massX[dx] += mass[qz][qy][qx][c] * ((c == 0) ? Bot(dx,qx) : Bct(dx,qx));
}
}
for (int dy = 0; dy < D1Dy; ++dy)
{
const real_t wy = (c == 1) ? Bot(dy,qy) : Bct(dy,qy);
for (int dx = 0; dx < D1Dx; ++dx)
{
massXY[dy][dx] += massX[dx] * wy;
}
}
}
for (int dz = 0; dz < D1Dz; ++dz)
{
const real_t wz = (c == 2) ? Bot(dz,qz) : Bct(dz,qz);
for (int dy = 0; dy < D1Dy; ++dy)
{
for (int dx = 0; dx < D1Dx; ++dx)
{
Y(dx + ((dy + (dz * D1Dy)) * D1Dx) + osc, e) += massXY[dy][dx] * wz;
}
}
}
osc += D1Dx * D1Dy * D1Dz;
} // loop c
} // loop qz
}); // end of element loop
}
void PACurlCurlSetup2D(const int Q1D,
const int NE,
const Array<real_t> &w,
const Vector &j,
Vector &coeff,
Vector &op)
{
const int NQ = Q1D*Q1D;
auto W = w.Read();
auto J = Reshape(j.Read(), NQ, 2, 2, NE);
auto C = Reshape(coeff.Read(), NQ, NE);
auto y = Reshape(op.Write(), NQ, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
for (int q = 0; q < NQ; ++q)
{
const real_t J11 = J(q,0,0,e);
const real_t J21 = J(q,1,0,e);
const real_t J12 = J(q,0,1,e);
const real_t J22 = J(q,1,1,e);
const real_t detJ = (J11*J22)-(J21*J12);
y(q,e) = W[q] * C(q,e) / detJ;
}
});
}
void PACurlCurlSetup3D(const int Q1D,
const int coeffDim,
const int NE,
const Array<real_t> &w,
const Vector &j,
Vector &coeff,
Vector &op)
{
const int NQ = Q1D*Q1D*Q1D;
const bool symmetric = (coeffDim != 9);
auto W = w.Read();
auto J = Reshape(j.Read(), NQ, 3, 3, NE);
auto C = Reshape(coeff.Read(), coeffDim, NQ, NE);
auto y = Reshape(op.Write(), NQ, symmetric ? 6 : 9, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
for (int q = 0; q < NQ; ++q)
{
const real_t J11 = J(q,0,0,e);
const real_t J21 = J(q,1,0,e);
const real_t J31 = J(q,2,0,e);
const real_t J12 = J(q,0,1,e);
const real_t J22 = J(q,1,1,e);
const real_t J32 = J(q,2,1,e);
const real_t J13 = J(q,0,2,e);
const real_t J23 = J(q,1,2,e);
const real_t J33 = J(q,2,2,e);
const real_t detJ = J11 * (J22 * J33 - J32 * J23) -
J21 * (J12 * J33 - J32 * J13) +
J31 * (J12 * J23 - J22 * J13);
const real_t c_detJ = W[q] / detJ;
if (coeffDim == 6 || coeffDim == 9) // Matrix coefficient version
{
// Set y to the 6 or 9 entries of J^T M J / det
const real_t M11 = C(0, q, e);
const real_t M12 = C(1, q, e);
const real_t M13 = C(2, q, e);
const real_t M21 = (!symmetric) ? C(3, q, e) : M12;
const real_t M22 = (!symmetric) ? C(4, q, e) : C(3, q, e);
const real_t M23 = (!symmetric) ? C(5, q, e) : C(4, q, e);
const real_t M31 = (!symmetric) ? C(6, q, e) : M13;
const real_t M32 = (!symmetric) ? C(7, q, e) : M23;
const real_t M33 = (!symmetric) ? C(8, q, e) : C(5, q, e);
// First compute R = MJ
const real_t R11 = M11*J11 + M12*J21 + M13*J31;
const real_t R12 = M11*J12 + M12*J22 + M13*J32;
const real_t R13 = M11*J13 + M12*J23 + M13*J33;
const real_t R21 = M21*J11 + M22*J21 + M23*J31;
const real_t R22 = M21*J12 + M22*J22 + M23*J32;
const real_t R23 = M21*J13 + M22*J23 + M23*J33;
const real_t R31 = M31*J11 + M32*J21 + M33*J31;
const real_t R32 = M31*J12 + M32*J22 + M33*J32;
const real_t R33 = M31*J13 + M32*J23 + M33*J33;
// Now set y to J^T R / det
y(q,0,e) = c_detJ * (J11*R11 + J21*R21 + J31*R31); // 1,1
const real_t Y12 = c_detJ * (J11*R12 + J21*R22 + J31*R32);
y(q,1,e) = Y12; // 1,2
y(q,2,e) = c_detJ * (J11*R13 + J21*R23 + J31*R33); // 1,3
const real_t Y21 = c_detJ * (J12*R11 + J22*R21 + J32*R31);
const real_t Y22 = c_detJ * (J12*R12 + J22*R22 + J32*R32);
const real_t Y23 = c_detJ * (J12*R13 + J22*R23 + J32*R33);
const real_t Y33 = c_detJ * (J13*R13 + J23*R23 + J33*R33);
y(q,3,e) = symmetric ? Y22 : Y21; // 2,2 or 2,1
y(q,4,e) = symmetric ? Y23 : Y22; // 2,3 or 2,2
y(q,5,e) = symmetric ? Y33 : Y23; // 3,3 or 2,3
if (!symmetric)
{
y(q,6,e) = c_detJ * (J13*R11 + J23*R21 + J33*R31); // 3,1
y(q,7,e) = c_detJ * (J13*R12 + J23*R22 + J33*R32); // 3,2
y(q,8,e) = Y33; // 3,3
}
}
else // Vector or scalar coefficient version
{
// Set y to the 6 entries of J^T D J / det^2
const real_t D1 = C(0, q, e);
const real_t D2 = coeffDim == 3 ? C(1, q, e) : D1;
const real_t D3 = coeffDim == 3 ? C(2, q, e) : D1;
y(q,0,e) = c_detJ * (D1*J11*J11 + D2*J21*J21 + D3*J31*J31); // 1,1
y(q,1,e) = c_detJ * (D1*J11*J12 + D2*J21*J22 + D3*J31*J32); // 1,2
y(q,2,e) = c_detJ * (D1*J11*J13 + D2*J21*J23 + D3*J31*J33); // 1,3
y(q,3,e) = c_detJ * (D1*J12*J12 + D2*J22*J22 + D3*J32*J32); // 2,2
y(q,4,e) = c_detJ * (D1*J12*J13 + D2*J22*J23 + D3*J32*J33); // 2,3
y(q,5,e) = c_detJ * (D1*J13*J13 + D2*J23*J23 + D3*J33*J33); // 3,3
}
}
});
}
void PACurlCurlAssembleDiagonal2D(const int D1D, const int Q1D, const bool,
const int NE, const Array<real_t> &bo,
const Array<real_t> &, const Array<real_t> &,
const Array<real_t> &gc,
const Vector &pa_data, Vector &diag)
{
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto Gc = Reshape(gc.Read(), Q1D, D1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, NE);
auto D = Reshape(diag.ReadWrite(), 2*(D1D-1)*D1D, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int VDIM = 2;
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
real_t t[MAX_Q1D];
for (int dy = 0; dy < D1Dy; ++dy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
t[qx] = 0.0;
for (int qy = 0; qy < Q1D; ++qy)
{
const real_t wy = (c == 1) ? Bo(qy,dy) : -Gc(qy,dy);
t[qx] += wy * wy * op(qx,qy,e);
}
}
for (int dx = 0; dx < D1Dx; ++dx)
{
for (int qx = 0; qx < Q1D; ++qx)
{
const real_t wx = ((c == 0) ? Bo(qx,dx) : Gc(qx,dx));
D(dx + (dy * D1Dx) + osc, e) += t[qx] * wx * wx;
}
}
}
osc += D1Dx * D1Dy;
} // loop c
}); // end of element loop
}
void PACurlCurlApply2D(const int D1D, const int Q1D, const bool, const int NE,
const Array<real_t> &bo, const Array<real_t> &,
const Array<real_t> &bot, const Array<real_t> &,
const Array<real_t> &gc, const Array<real_t> &gct,
const Vector &pa_data, const Vector &x, Vector &y,
const bool useAbs)
{
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto Bot = Reshape(bot.Read(), D1D-1, Q1D);
auto Gc = Reshape(gc.Read(), Q1D, D1D);
auto Gct = Reshape(gct.Read(), D1D, Q1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, NE);
auto X = Reshape(x.Read(), 2*(D1D-1)*D1D, NE);
auto Y = Reshape(y.ReadWrite(), 2*(D1D-1)*D1D, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int VDIM = 2;
constexpr static int MAX_D1D = DofQuadLimits::HCURL_MAX_D1D;
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
real_t curl[MAX_Q1D][MAX_Q1D];
// curl[qy][qx] will be computed as du_y/dx - du_x/dy
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
curl[qy][qx] = 0.0;
}
}
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
for (int dy = 0; dy < D1Dy; ++dy)
{
real_t gradX[MAX_Q1D];
for (int qx = 0; qx < Q1D; ++qx)
{
gradX[qx] = 0;
}
for (int dx = 0; dx < D1Dx; ++dx)
{
const real_t t = X(dx + (dy * D1Dx) + osc, e);
for (int qx = 0; qx < Q1D; ++qx)
{
gradX[qx] += t * ((c == 0) ? Bo(qx,dx) : Gc(qx,dx));
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
const int sign = useAbs ? 1 : -1;
const real_t wy = (c == 0) ? (sign*Gc(qy,dy)) : Bo(qy,dy);
for (int qx = 0; qx < Q1D; ++qx)
{
curl[qy][qx] += gradX[qx] * wy;
}
}
}
osc += D1Dx * D1Dy;
} // loop (c) over components
// Apply D operator.
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
curl[qy][qx] *= op(qx,qy,e);
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
real_t gradX[MAX_D1D];
for (int dx = 0; dx < D1Dx; ++dx)
{
gradX[dx] = 0.0;
}
for (int qx = 0; qx < Q1D; ++qx)
{
for (int dx = 0; dx < D1Dx; ++dx)
{
gradX[dx] += curl[qy][qx] * ((c == 0) ? Bot(dx,qx) : Gct(dx,qx));
}
}
for (int dy = 0; dy < D1Dy; ++dy)
{
const int sign = useAbs ? 1 : -1;
const real_t wy = (c == 0) ? (sign*Gct(dy,qy)) : Bot(dy,qy);
for (int dx = 0; dx < D1Dx; ++dx)
{
Y(dx + (dy * D1Dx) + osc, e) += gradX[dx] * wy;
}
}
osc += D1Dx * D1Dy;
} // loop c
} // loop qy
}); // end of element loop
}
void PAHcurlL2Setup2D(const int Q1D,
const int NE,
const Array<real_t> &w,
Vector &coeff,
Vector &op)
{
const int NQ = Q1D*Q1D;
auto W = w.Read();
auto C = Reshape(coeff.Read(), NQ, NE);
auto y = Reshape(op.Write(), NQ, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
for (int q = 0; q < NQ; ++q)
{
y(q,e) = W[q] * C(q,e);
}
});
}
void PAHcurlL2Setup3D(const int NQ,
const int coeffDim,
const int NE,
const Array<real_t> &w,
Vector &coeff,
Vector &op)
{
auto W = w.Read();
auto C = Reshape(coeff.Read(), coeffDim, NQ, NE);
auto y = Reshape(op.Write(), coeffDim, NQ, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
for (int q = 0; q < NQ; ++q)
{
for (int c=0; c<coeffDim; ++c)
{
y(c,q,e) = W[q] * C(c,q,e);
}
}
});
}
void PAHcurlL2Apply2D(const int D1D,
const int D1Dtest,
const int Q1D,
const int NE,
const Array<real_t> &bo,
const Array<real_t> &bot,
const Array<real_t> &bt,
const Array<real_t> &gc,
const Vector &pa_data,
const Vector &x, // trial = H(curl)
Vector &y) // test = L2 or H1
{
const int H1 = (D1Dtest == D1D);
MFEM_VERIFY(y.Size() == NE*D1Dtest*D1Dtest, "Test vector of wrong dimension");
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto Bot = Reshape(bot.Read(), D1D-1, Q1D);
auto Bt = Reshape(bt.Read(), D1D, Q1D);
auto Gc = Reshape(gc.Read(), Q1D, D1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, NE);
auto X = Reshape(x.Read(), 2*(D1D-1)*D1D, NE);
auto Y = Reshape(y.ReadWrite(), D1Dtest, D1Dtest, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int VDIM = 2;
constexpr static int MAX_D1D = DofQuadLimits::HCURL_MAX_D1D;
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
real_t curl[MAX_Q1D][MAX_Q1D];
// curl[qy][qx] will be computed as du_y/dx - du_x/dy
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
curl[qy][qx] = 0.0;
}
}
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
for (int dy = 0; dy < D1Dy; ++dy)
{
real_t gradX[MAX_Q1D];
for (int qx = 0; qx < Q1D; ++qx)
{
gradX[qx] = 0;
}
for (int dx = 0; dx < D1Dx; ++dx)
{
const real_t t = X(dx + (dy * D1Dx) + osc, e);
for (int qx = 0; qx < Q1D; ++qx)
{
gradX[qx] += t * ((c == 0) ? Bo(qx,dx) : Gc(qx,dx));
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
const real_t wy = (c == 0) ? -Gc(qy,dy) : Bo(qy,dy);
for (int qx = 0; qx < Q1D; ++qx)
{
curl[qy][qx] += gradX[qx] * wy;
}
}
}
osc += D1Dx * D1Dy;
} // loop (c) over components
// Apply D operator.
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
curl[qy][qx] *= op(qx,qy,e);
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
real_t sol_x[MAX_D1D];
for (int dx = 0; dx < D1Dtest; ++dx)
{
sol_x[dx] = 0.0;
}
for (int qx = 0; qx < Q1D; ++qx)
{
const real_t s = curl[qy][qx];
for (int dx = 0; dx < D1Dtest; ++dx)
{
sol_x[dx] += s * ((H1 == 1) ? Bt(dx,qx) : Bot(dx,qx));
}
}
for (int dy = 0; dy < D1Dtest; ++dy)
{
const real_t wy = (H1 == 1) ? Bt(dy,qy) : Bot(dy,qy);
for (int dx = 0; dx < D1Dtest; ++dx)
{
Y(dx,dy,e) += sol_x[dx] * wy;
}
}
} // loop qy
}); // end of element loop
}
void PAHcurlL2ApplyTranspose2D(const int D1D,
const int D1Dtest,
const int Q1D,
const int NE,
const Array<real_t> &bo,
const Array<real_t> &bot,
const Array<real_t> &b,
const Array<real_t> &gct,
const Vector &pa_data,
const Vector &x, // trial = H(curl)
Vector &y) // test = L2 or H1
{
const int H1 = (D1Dtest == D1D);
MFEM_VERIFY(x.Size() == NE*D1Dtest*D1Dtest, "Test vector of wrong dimension");
auto Bo = Reshape(bo.Read(), Q1D, D1D-1);
auto B = Reshape(b.Read(), Q1D, D1D);
auto Bot = Reshape(bot.Read(), D1D-1, Q1D);
auto Gct = Reshape(gct.Read(), D1D, Q1D);
auto op = Reshape(pa_data.Read(), Q1D, Q1D, NE);
auto X = Reshape(x.Read(), D1Dtest, D1Dtest, NE);
auto Y = Reshape(y.ReadWrite(), 2*(D1D-1)*D1D, NE);
mfem::forall(NE, [=] MFEM_HOST_DEVICE (int e)
{
constexpr static int VDIM = 2;
constexpr static int MAX_D1D = DofQuadLimits::HCURL_MAX_D1D;
constexpr static int MAX_Q1D = DofQuadLimits::HCURL_MAX_Q1D;
real_t mass[MAX_Q1D][MAX_Q1D];
// Zero-order term in L2 or H1 test space
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
mass[qy][qx] = 0.0;
}
}
for (int dy = 0; dy < D1Dtest; ++dy)
{
real_t sol_x[MAX_Q1D];
for (int qy = 0; qy < Q1D; ++qy)
{
sol_x[qy] = 0.0;
}
for (int dx = 0; dx < D1Dtest; ++dx)
{
const real_t s = X(dx,dy,e);
for (int qx = 0; qx < Q1D; ++qx)
{
sol_x[qx] += s * ((H1 == 1) ? B(qx,dx) : Bo(qx,dx));
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
const real_t d2q = (H1 == 1) ? B(qy,dy) : Bo(qy,dy);
for (int qx = 0; qx < Q1D; ++qx)
{
mass[qy][qx] += d2q * sol_x[qx];
}
}
}
// Apply D operator.
for (int qy = 0; qy < Q1D; ++qy)
{
for (int qx = 0; qx < Q1D; ++qx)
{
mass[qy][qx] *= op(qx,qy,e);
}
}
for (int qy = 0; qy < Q1D; ++qy)
{
int osc = 0;
for (int c = 0; c < VDIM; ++c) // loop over x, y components
{
const int D1Dy = (c == 1) ? D1D - 1 : D1D;
const int D1Dx = (c == 0) ? D1D - 1 : D1D;
real_t gradX[MAX_D1D];
for (int dx = 0; dx < D1Dx; ++dx)
{
gradX[dx] = 0.0;
}
for (int qx = 0; qx < Q1D; ++qx)
{
for (int dx = 0; dx < D1Dx; ++dx)
{
gradX[dx] += mass[qy][qx] * ((c == 0) ? Bot(dx,qx) : Gct(dx,qx));
}
}
for (int dy = 0; dy < D1Dy; ++dy)
{
const real_t wy = (c == 0) ? -Gct(dy,qy) : Bot(dy,qy);
for (int dx = 0; dx < D1Dx; ++dx)
{
Y(dx + (dy * D1Dx) + osc, e) += gradX[dx] * wy;
}
}
osc += D1Dx * D1Dy;
} // loop c
} // loop qy
}); // end of element loop
}
} // namespace internal
} // namespace mfem