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rCADDMESH/third-party/akantu/test/test_solver/test_sparse_matrix_profile.cc
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test_sparse_matrix_profile.cc
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/**
* @file test_sparse_matrix_profile.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Mon Dec 13 2010
* @date last modification: Sun Oct 19 2014
*
* @brief test the profile generation of the SparseMatrix class
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014, 2015 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Akantu is free software: you can 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 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include <cstdlib>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "sparse_matrix.hh"
#include "dof_synchronizer.hh"
#ifdef AKANTU_USE_SCOTCH
#include "mesh_partition_scotch.hh"
#endif
/* -------------------------------------------------------------------------- */
int main(int argc, char *argv[]) {
akantu::initialize(argc, argv);
akantu::UInt spatial_dimension = 2;
akantu::Mesh mesh(spatial_dimension);
akantu::MeshIOMSH mesh_io;
mesh_io.read("triangle.msh", mesh);
akantu::SparseMatrix sparse_matrix_hand(10, akantu::_symmetric, "hand");
for(akantu::UInt i = 0; i < 10; ++i) {
sparse_matrix_hand.addToProfile(i, i);
}
sparse_matrix_hand.addToProfile(0,9);
for(akantu::UInt i = 0; i < 10; ++i) {
sparse_matrix_hand.addToMatrix(i, i, i*10);
}
sparse_matrix_hand.addToMatrix(0,9, 100);
sparse_matrix_hand.saveProfile("profile_hand.mtx");
sparse_matrix_hand.saveMatrix("matrix_hand.mtx");
/* ------------------------------------------------------------------------ */
akantu::UInt nb_nodes = mesh.getNbNodes();
akantu::SparseMatrix sparse_matrix(nb_nodes * spatial_dimension, akantu::_symmetric, "mesh");
akantu::DOFSynchronizer dof_synchronizer(mesh, spatial_dimension);
dof_synchronizer.initGlobalDOFEquationNumbers();
sparse_matrix.buildProfile(mesh, dof_synchronizer, spatial_dimension);
sparse_matrix.saveProfile("profile.mtx");
/* ------------------------------------------------------------------------ */
#ifdef AKANTU_USE_SCOTCH
mesh_io.write("triangle_breorder.msh", mesh);
akantu::MeshPartition * partition = new akantu::MeshPartitionScotch(mesh, spatial_dimension);
partition->reorder();
delete partition;
akantu::DOFSynchronizer dof_synchronizer_re(mesh, spatial_dimension);
dof_synchronizer_re.initGlobalDOFEquationNumbers();
sparse_matrix.buildProfile(mesh, dof_synchronizer_re, spatial_dimension);
sparse_matrix.saveProfile("profile_reorder.mtx");
mesh_io.write("triangle_reorder.msh", mesh);
#endif
akantu::finalize();
return EXIT_SUCCESS;
}
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