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Add test to check MatrixFree::reinit() works for multiple ranks and t…
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// --------------------------------------------------------------------- | ||
// | ||
// Copyright (C) 2023 by the deal.II authors | ||
// | ||
// This file is part of the deal.II library. | ||
// | ||
// The deal.II library is free software; you can use it, redistribute | ||
// it, and/or modify it under the terms of the GNU Lesser General | ||
// Public License as published by the Free Software Foundation; either | ||
// version 2.1 of the License, or (at your option) any later version. | ||
// The full text of the license can be found in the file LICENSE.md at | ||
// the top level directory of deal.II. | ||
// | ||
// --------------------------------------------------------------------- | ||
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// Verify that MatrixFree::reinit() works without errors if run with | ||
// multithreadingf and multiple ranks. | ||
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#include <deal.II/distributed/tria.h> | ||
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#include <deal.II/fe/fe_dgq.h> | ||
#include <deal.II/fe/mapping_q1.h> | ||
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#include <deal.II/grid/grid_generator.h> | ||
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#include <deal.II/lac/affine_constraints.h> | ||
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#include <deal.II/matrix_free/matrix_free.h> | ||
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#include <iostream> | ||
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#include "../tests.h" | ||
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using namespace dealii; | ||
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template <int dim, typename Number> | ||
void | ||
do_test(const unsigned int degree, const unsigned int n_refinements) | ||
{ | ||
deallog << "Create Triangulation with " << n_refinements << " refinements..." | ||
<< std::endl; | ||
parallel::distributed::Triangulation<dim> tria(MPI_COMM_WORLD); | ||
GridGenerator::hyper_cube(tria); | ||
tria.refine_global(n_refinements); | ||
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deallog << "Create DoFHandler..." << std::endl; | ||
DoFHandler<dim> dof_handler(tria); | ||
dof_handler.distribute_dofs(FE_DGQ<dim>(degree)); | ||
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deallog << "Setup AffineConstraints..." << std::endl; | ||
AffineConstraints<Number> constraints; | ||
constraints.close(); | ||
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deallog << "Set MatrixFree AdditionalData..." << std::endl; | ||
typename MatrixFree<dim, Number>::AdditionalData data; | ||
data.mapping_update_flags_inner_faces = update_values; | ||
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deallog << "Reinit MatrixFree..." << std::endl; | ||
MatrixFree<dim, Number> matrix_free; | ||
matrix_free.reinit( | ||
MappingQ1<dim>(), dof_handler, constraints, QGauss<dim>(degree + 1), data); | ||
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deallog << "OK" << std::endl << std::endl; | ||
} | ||
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int | ||
main(int argc, char **argv) | ||
{ | ||
// Init with threading enabled | ||
Utilities::MPI::MPI_InitFinalize mpi_init(argc, argv); | ||
mpi_initlog(); | ||
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do_test<2, double>(3, 3); | ||
do_test<3, double>(2, 2); | ||
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deallog << std::endl; | ||
} |
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tests/matrix_free/reinit_matrix_free_threading.with_p4est=true.mpirun=2.output
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DEAL::Create Triangulation with 3 refinements... | ||
DEAL::Create DoFHandler... | ||
DEAL::Setup AffineConstraints... | ||
DEAL::Set MatrixFree AdditionalData... | ||
DEAL::Reinit MatrixFree... | ||
DEAL::OK | ||
DEAL:: | ||
DEAL::Create Triangulation with 2 refinements... | ||
DEAL::Create DoFHandler... | ||
DEAL::Setup AffineConstraints... | ||
DEAL::Set MatrixFree AdditionalData... | ||
DEAL::Reinit MatrixFree... | ||
DEAL::OK | ||
DEAL:: | ||
DEAL:: |