From: Martin Kronbichler Date: Sat, 29 Oct 2016 14:04:10 +0000 (+0200) Subject: Test shared tria with matrix-free X-Git-Tag: v8.5.0-rc1~526^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F3313%2Fhead;p=dealii.git Test shared tria with matrix-free --- diff --git a/tests/matrix_free/matrix_vector_19.cc b/tests/matrix_free/matrix_vector_19.cc new file mode 100644 index 0000000000..fd1cf7fc3b --- /dev/null +++ b/tests/matrix_free/matrix_vector_19.cc @@ -0,0 +1,220 @@ +// --------------------------------------------------------------------- +// +// Copyright (C) 2016 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 at +// the top level of the deal.II distribution. +// +// --------------------------------------------------------------------- + + + +// same as matrix_vector_10 but using parallel::shared::Triangulation rather +// than parallel::distributed::Triangulation + +#include "../tests.h" + +#include "matrix_vector_mf.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + + + + +template +void test () +{ + typedef double number; + + parallel::shared::Triangulation tria (MPI_COMM_WORLD); + GridGenerator::hyper_cube (tria); + tria.refine_global(1); + typename Triangulation::active_cell_iterator + cell = tria.begin_active (), + endc = tria.end(); + cell = tria.begin_active (); + for (; cell!=endc; ++cell) + if (cell->center().norm()<0.2) + cell->set_refine_flag(); + tria.execute_coarsening_and_refinement(); + if (dim < 3 && fe_degree < 2) + tria.refine_global(2); + else + tria.refine_global(1); + tria.begin(tria.n_levels()-1)->set_refine_flag(); + tria.last()->set_refine_flag(); + tria.execute_coarsening_and_refinement(); + cell = tria.begin_active (); + for (unsigned int i=0; i<10-3*dim; ++i) + { + cell = tria.begin_active (); + unsigned int counter = 0; + for (; cell!=endc; ++cell, ++counter) + if (counter % (7-i) == 0) + cell->set_refine_flag(); + tria.execute_coarsening_and_refinement(); + } + + FE_Q fe (fe_degree); + DoFHandler dof (tria); + dof.distribute_dofs(fe); + + IndexSet owned_set = dof.locally_owned_dofs(); + IndexSet relevant_set; + DoFTools::extract_locally_relevant_dofs (dof, relevant_set); + + ConstraintMatrix constraints (relevant_set); + DoFTools::make_hanging_node_constraints(dof, constraints); + VectorTools::interpolate_boundary_values (dof, 0, ZeroFunction(), + constraints); + constraints.close(); + + deallog << "Testing " << dof.get_fe().get_name() << std::endl; + //std::cout << "Number of cells: " << tria.n_global_active_cells() << std::endl; + //std::cout << "Number of degrees of freedom: " << dof.n_dofs() << std::endl; + //std::cout << "Number of constraints: " << constraints.n_constraints() << std::endl; + + MatrixFree mf_data; + { + const QGauss<1> quad (fe_degree+1); + typename MatrixFree::AdditionalData data; + data.mpi_communicator = MPI_COMM_WORLD; + data.tasks_parallel_scheme = + MatrixFree::AdditionalData::none; + data.tasks_block_size = 7; + mf_data.reinit (dof, constraints, quad, data); + } + + MatrixFreeTest > mf (mf_data); + LinearAlgebra::distributed::Vector in, out, ref; + mf_data.initialize_dof_vector (in); + out.reinit (in); + ref.reinit (in); + + for (unsigned int i=0; i quadrature_formula(fe_degree+1); + + FEValues fe_values (dof.get_fe(), quadrature_formula, + update_values | update_gradients | + update_JxW_values); + + const unsigned int dofs_per_cell = dof.get_fe().dofs_per_cell; + const unsigned int n_q_points = quadrature_formula.size(); + + FullMatrix cell_matrix (dofs_per_cell, dofs_per_cell); + std::vector local_dof_indices (dofs_per_cell); + + typename DoFHandler::active_cell_iterator + cell = dof.begin_active(), + endc = dof.end(); + for (; cell!=endc; ++cell) + if (cell->is_locally_owned()) + { + cell_matrix = 0; + fe_values.reinit (cell); + + for (unsigned int q_point=0; q_pointget_dof_indices(local_dof_indices); + constraints.distribute_local_to_global (cell_matrix, + local_dof_indices, + sparse_matrix); + } + } + sparse_matrix.compress(VectorOperation::add); + + sparse_matrix.vmult (ref, in); + out -= ref; + const double diff_norm = out.linfty_norm(); + + deallog << "Norm of difference: " << diff_norm << std::endl << std::endl; +} + + +int main (int argc, char **argv) +{ + Utilities::MPI::MPI_InitFinalize mpi_initialization (argc, argv, testing_max_num_threads()); + + unsigned int myid = Utilities::MPI::this_mpi_process (MPI_COMM_WORLD); + deallog.push(Utilities::int_to_string(myid)); + + if (myid == 0) + { + std::ofstream logfile("output"); + deallog.attach(logfile); + deallog << std::setprecision(4); + deallog.threshold_double(1.e-10); + + deallog.push("2d"); + test<2,1>(); + test<2,2>(); + deallog.pop(); + + deallog.push("3d"); + test<3,1>(); + test<3,2>(); + deallog.pop(); + } + else + { + test<2,1>(); + test<2,2>(); + test<3,1>(); + test<3,2>(); + } +} diff --git a/tests/matrix_free/matrix_vector_19.with_metis=true.with_trilinos=true.with_mpi=true.with_p4est=true.mpirun=4.output b/tests/matrix_free/matrix_vector_19.with_metis=true.with_trilinos=true.with_mpi=true.with_p4est=true.mpirun=4.output new file mode 100644 index 0000000000..25e13d5f8f --- /dev/null +++ b/tests/matrix_free/matrix_vector_19.with_metis=true.with_trilinos=true.with_mpi=true.with_p4est=true.mpirun=4.output @@ -0,0 +1,13 @@ + +DEAL:0:2d::Testing FE_Q<2>(1) +DEAL:0:2d::Norm of difference: 0 +DEAL:0:2d:: +DEAL:0:2d::Testing FE_Q<2>(2) +DEAL:0:2d::Norm of difference: 0 +DEAL:0:2d:: +DEAL:0:3d::Testing FE_Q<3>(1) +DEAL:0:3d::Norm of difference: 0 +DEAL:0:3d:: +DEAL:0:3d::Testing FE_Q<3>(2) +DEAL:0:3d::Norm of difference: 0 +DEAL:0:3d::