tboudreaux/meson-mfem
Template
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

feat(linux): portable build works on linux + benchmarks

Browse Source
This commit is contained in:
Emily Boudreaux
2026-09-05 11:01:34 -04:00
parent 7282b2e134
commit 323555b722
10 changed files with 1482 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
examples/parallel_hypre.cpp
View File

@@ -13,12 +13,19 @@ int main(int argc, char **argv)
mfem::Mpi::Init(argc, argv);
mfem::Hypre::Init();
const int rank = mfem::Mpi::WorldRank();
const int ranks = mfem::Mpi::WorldSize();
const char *device_name = argc > 1 ? argv[1] : "cpu";
mfem::Device device(device_name);
mfem::Mesh serial_mesh = mfem::Mesh::MakeCartesian2D(
8, 8, mfem::Element::QUADRILATERAL, true, 1.0, 1.0);
mfem::ParMesh mesh(MPI_COMM_WORLD, serial_mesh);
mfem::Array<int> partitioning(serial_mesh.GetNE());
for (int element = 0; element < serial_mesh.GetNE(); ++element)
{
partitioning[element] = static_cast<long long>(element) * ranks /
serial_mesh.GetNE();
}
mfem::ParMesh mesh(MPI_COMM_WORLD, serial_mesh, partitioning.GetData());
serial_mesh.Clear();
mfem::H1_FECollection elements(2, mesh.Dimension());
@@ -66,10 +73,11 @@ int main(int argc, char **argv)
const double local_norm = solution.Norml2();
double global_norm = 0.0;
MPI_Allreduce(&local_norm, &global_norm, 1, MPI_DOUBLE, MPI_SUM, MPI_COMM_WORLD);
MPI_Allreduce(&local_norm, &global_norm, 1, MPI_DOUBLE, MPI_SUM,
MPI_COMM_WORLD);
if (rank == 0)
{
std::cout << "MFEM parallel Poisson: ranks=" << mfem::Mpi::WorldSize()
std::cout << "MFEM parallel Poisson: ranks=" << ranks
<< " global_dofs=" << space.GlobalTrueVSize()
<< " norm_sum=" << global_norm
<< " device=" << device_name << '\n';