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test_dof_synchronizer.cc
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Wed, Dec 11, 16:52

test_dof_synchronizer.cc
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/**
* @file test_dof_synchronizer.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Sun Oct 19 2014
* @date last modification: Wed Jan 15 2020
*
* @brief Test the functionality of the DOFSynchronizer class
*
*
* @section LICENSE
*
* Copyright (©) 2010-2021 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 "communicator.hh"
#include "dof_synchronizer.hh"
#include "element_synchronizer.hh"
#include "mesh_io.hh"
#include "mesh_partition_scotch.hh"
/* -------------------------------------------------------------------------- */
#include "io_helper.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char * argv[]) {
const UInt spatial_dimension = 2;
initialize(argc, argv);
const auto & comm = akantu::Communicator::getStaticCommunicator();
Int prank = comm.whoAmI();
Mesh mesh(spatial_dimension);
if (prank == 0)
mesh.read("bar.msh");
mesh.distribute();
DOFManagerDefault dof_manager(mesh, "test_dof_manager");
UInt nb_nodes = mesh.getNbNodes();
/* ------------------------------------------------------------------------ */
/* test the synchronization */
/* ------------------------------------------------------------------------ */
Array<Real> test_synchronize(nb_nodes, spatial_dimension, "Test vector");
dof_manager.registerDOFs("test_synchronize", test_synchronize, _dst_nodal);
auto & equation_number =
dof_manager.getLocalEquationsNumbers("test_synchronize");
DOFSynchronizer & dof_synchronizer = dof_manager.getSynchronizer();
std::cout << "Synchronizing a dof vector" << std::endl;
Array<Int> local_data_array(dof_manager.getLocalSystemSize(), 2);
auto it_data = local_data_array.begin(2);
for (UInt local_dof = 0; local_dof < dof_manager.getLocalSystemSize();
++local_dof) {
UInt equ_number = equation_number(local_dof);
Vector<Int> val;
if (dof_manager.isLocalOrMasterDOF(equ_number)) {
UInt global_dof = dof_manager.localToGlobalEquationNumber(local_dof);
val = {0, 1};
val += global_dof * 2;
} else {
val = {-1, -1};
}
Vector<Int> data = it_data[local_dof];
data = val;
}
dof_synchronizer.synchronizeArray(local_data_array);
auto test_data = [&]() -> void {
auto it_data = local_data_array.begin(2);
for (UInt local_dof = 0; local_dof < dof_manager.getLocalSystemSize();
++local_dof) {
UInt equ_number = equation_number(local_dof);
Vector<Int> exp_val;
UInt global_dof = dof_manager.localToGlobalEquationNumber(local_dof);
if (dof_manager.isLocalOrMasterDOF(equ_number) ||
dof_manager.isSlaveDOF(equ_number)) {
exp_val = {0, 1};
exp_val += global_dof * 2;
} else {
exp_val = {-1, -1};
}
Vector<Int> val = it_data[local_dof];
if (exp_val != val) {
std::cerr << "Failed !" << prank << " DOF: " << global_dof << " - l"
<< local_dof << " value:" << val << " expected: " << exp_val
<< std::endl;
exit(1);
}
}
};
test_data();
if (prank == 0) {
Array<Int> test_gathered(dof_manager.getSystemSize(), 2);
dof_synchronizer.gather(local_data_array, test_gathered);
local_data_array.set(-1);
dof_synchronizer.scatter(local_data_array, test_gathered);
} else {
dof_synchronizer.gather(local_data_array);
local_data_array.set(-1);
dof_synchronizer.scatter(local_data_array);
}
test_data();
finalize();
return 0;
}

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