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periodic_node_synchronizer.cc
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Thu, Dec 12, 12:20

periodic_node_synchronizer.cc
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/**
* Copyright (©) 2018-2023 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 "periodic_node_synchronizer.hh"
#include "mesh.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
/* -------------------------------------------------------------------------- */
PeriodicNodeSynchronizer::PeriodicNodeSynchronizer(
Mesh & mesh, const ID & id, const bool register_to_event_manager,
EventHandlerPriority event_priority)
: NodeSynchronizer(mesh, id + ":masters", register_to_event_manager,
event_priority) {}
/* -------------------------------------------------------------------------- */
void PeriodicNodeSynchronizer::update() {
static int count = 0;
const auto & masters_to_slaves = this->mesh.getPeriodicMasterSlaves();
masters_list.resize(0);
masters_list.reserve(masters_to_slaves.size());
slaves_list.resize(0);
slaves_list.reserve(masters_to_slaves.size());
reset();
std::set<Idx> masters_to_receive;
for (auto && data : masters_to_slaves) {
auto master = std::get<0>(data);
auto slave = std::get<1>(data);
masters_list.push_back(master);
slaves_list.push_back(slave);
if (not(mesh.isMasterNode(master) or mesh.isLocalNode(master))) {
masters_to_receive.insert(master);
}
}
if (not mesh.isDistributed() or nb_proc == 1) {
return;
}
std::map<Int, Array<Idx>> buffers;
for (auto node : masters_to_receive) {
auto && proc = mesh.getNodePrank(node);
auto && scheme = this->communications.createRecvScheme(proc);
scheme.push_back(node);
buffers[proc].push_back(mesh.getNodeGlobalId(node));
}
auto tag = Tag::genTag(0, count, Tag::_modify_scheme);
std::vector<CommunicationRequest> requests;
for (auto && data : buffers) {
auto proc = std::get<0>(data);
auto & buffer = std::get<1>(data);
requests.push_back(communicator.asyncSend(buffer, proc, tag,
CommunicationMode::_synchronous));
std::cout << "Recv from proc : " << proc << " -> "
<< this->communications.getScheme(proc, _recv).size()
<< std::endl;
}
communicator.receiveAnyNumber<Idx>(
requests,
[&](auto && proc, auto && msg) {
auto && scheme = this->communications.createSendScheme(proc);
for (auto node : msg) {
scheme.push_back(mesh.getNodeLocalId(node));
}
std::cout << "Send to proc : " << proc << " -> " << scheme.size()
<< " [" << tag << "]" << std::endl;
},
tag);
++count;
}
/* -------------------------------------------------------------------------- */
void PeriodicNodeSynchronizer::synchronizeOnceImpl(
DataAccessor<Idx> & data_accessor, const SynchronizationTag & tag) const {
NodeSynchronizer::synchronizeOnceImpl(data_accessor, tag);
auto size = data_accessor.getNbData(masters_list, tag);
CommunicationBuffer buffer(size);
data_accessor.packData(buffer, masters_list, tag);
data_accessor.unpackData(buffer, slaves_list, tag);
}
/* -------------------------------------------------------------------------- */
void PeriodicNodeSynchronizer::waitEndSynchronizeImpl(
DataAccessor<Idx> & data_accessor, const SynchronizationTag & tag) {
NodeSynchronizer::waitEndSynchronizeImpl(data_accessor, tag);
auto size = data_accessor.getNbData(masters_list, tag);
CommunicationBuffer buffer(size);
data_accessor.packData(buffer, masters_list, tag);
data_accessor.unpackData(buffer, slaves_list, tag);
}
} // namespace akantu

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