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slave_element_info_per_processor.cc
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Sat, Nov 23, 00:14

slave_element_info_per_processor.cc
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/**
* Copyright (©) 2016-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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 "element_info_per_processor.hh"
#include "element_synchronizer.hh"
#include "mesh_utils.hh"
/* -------------------------------------------------------------------------- */
#include <algorithm>
#include <iostream>
#include <map>
/* -------------------------------------------------------------------------- */
namespace akantu {
/* -------------------------------------------------------------------------- */
SlaveElementInfoPerProc::SlaveElementInfoPerProc(
ElementSynchronizer & synchronizer, Int message_cnt, Int root)
: ElementInfoPerProc(synchronizer, message_cnt, root, _not_defined) {
Vector<Int> size(5);
comm.receive(size, this->root,
Tag::genTag(this->root, this->message_count, Tag::_sizes));
this->type = (ElementType)size[0];
this->nb_local_element = size[1];
this->nb_ghost_element = size[2];
this->nb_element_to_receive = size[3];
this->nb_tags = size[4];
if (this->type != _not_defined) {
this->nb_nodes_per_element = Mesh::getNbNodesPerElement(type);
}
}
/* -------------------------------------------------------------------------- */
bool SlaveElementInfoPerProc::needSynchronize() {
return this->type != _not_defined;
}
/* -------------------------------------------------------------------------- */
void SlaveElementInfoPerProc::synchronizeConnectivities() {
Array<Idx> local_connectivity(
(this->nb_local_element + this->nb_ghost_element) *
this->nb_nodes_per_element);
AKANTU_DEBUG_INFO("Receiving connectivities from proc " << root);
comm.receive(
local_connectivity, this->root,
Tag::genTag(this->root, this->message_count, Tag::_connectivity));
auto & old_nodes = this->getNodesGlobalIds();
AKANTU_DEBUG_INFO("Renumbering local connectivities");
MeshUtils::renumberMeshNodes(this->mesh, local_connectivity,
this->nb_local_element, this->nb_ghost_element,
this->type, old_nodes);
MeshAccessor mesh_accessor(mesh);
auto & ghost_counter = mesh_accessor.getGhostsCounters(type, _ghost);
ghost_counter.resize(nb_ghost_element, 1);
}
/* -------------------------------------------------------------------------- */
void SlaveElementInfoPerProc::synchronizePartitions() {
Array<Idx> local_partitions(this->nb_element_to_receive +
this->nb_ghost_element * 2);
AKANTU_DEBUG_INFO("Receiving partition informations from proc " << root);
this->comm.receive(local_partitions, this->root,
Tag::genTag(root, this->message_count, Tag::_partitions));
if (Mesh::getSpatialDimension(this->type) ==
this->mesh.getSpatialDimension()) {
AKANTU_DEBUG_INFO("Creating communications scheme");
this->fillCommunicationScheme(local_partitions);
}
}
/* -------------------------------------------------------------------------- */
void SlaveElementInfoPerProc::synchronizeTags() {
AKANTU_DEBUG_IN();
if (this->nb_tags == 0) {
AKANTU_DEBUG_OUT();
return;
}
/* --------<<<<-TAGS------------------------------------------------- */
DynamicCommunicationBuffer mesh_data_sizes_buffer;
comm.broadcast(mesh_data_sizes_buffer, root);
AKANTU_DEBUG_INFO("Size of the information about the mesh data: "
<< mesh_data_sizes_buffer.size());
if (mesh_data_sizes_buffer.empty()) {
return;
}
AKANTU_DEBUG_INFO("Receiving the information about the mesh data tags, addr "
<< (void *)mesh_data_sizes_buffer.data());
std::vector<std::string> tag_names;
std::vector<MeshDataTypeCode> tag_type_codes;
std::vector<Int> tag_nb_component;
tag_names.resize(nb_tags);
tag_type_codes.resize(nb_tags);
tag_nb_component.resize(nb_tags);
CommunicationBuffer mesh_data_buffer;
Int type_code_int;
for (Int i(0); i < nb_tags; ++i) {
mesh_data_sizes_buffer >> tag_names[i];
mesh_data_sizes_buffer >> type_code_int;
tag_type_codes[i] = static_cast<MeshDataTypeCode>(type_code_int);
mesh_data_sizes_buffer >> tag_nb_component[i];
}
auto names_it = tag_names.begin();
auto names_end = tag_names.end();
CommunicationStatus mesh_data_comm_status;
AKANTU_DEBUG_INFO("Checking size of data to receive for mesh data TAG("
<< Tag::genTag(root, this->message_count, Tag::_mesh_data)
<< ")");
comm.probe<char>(root,
Tag::genTag(root, this->message_count, Tag::_mesh_data),
mesh_data_comm_status);
Int mesh_data_buffer_size(mesh_data_comm_status.size());
AKANTU_DEBUG_INFO("Receiving "
<< mesh_data_buffer_size << " bytes of mesh data TAG("
<< Tag::genTag(root, this->message_count, Tag::_mesh_data)
<< ")");
mesh_data_buffer.resize(mesh_data_buffer_size);
comm.receive(mesh_data_buffer, root,
Tag::genTag(root, this->message_count, Tag::_mesh_data));
// Loop over each tag for the current type
Int k(0);
for (; names_it != names_end; ++names_it, ++k) {
this->fillMeshData(mesh_data_buffer, *names_it, tag_type_codes[k],
tag_nb_component[k]);
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void SlaveElementInfoPerProc::synchronizeGroups() {
AKANTU_DEBUG_IN();
const Communicator & comm = mesh.getCommunicator();
auto my_rank = comm.whoAmI();
AKANTU_DEBUG_INFO("Receiving element groups from proc "
<< root << " TAG("
<< Tag::genTag(root, my_rank, Tag::_element_group) << ")");
CommunicationStatus status;
comm.probe<char>(root, Tag::genTag(root, my_rank, Tag::_element_group),
status);
CommunicationBuffer buffer(status.size());
comm.receive(buffer, root, Tag::genTag(root, my_rank, Tag::_element_group));
this->fillElementGroupsFromBuffer(buffer);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
} // namespace akantu

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