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https://github.com/OPM/opm-simulators.git
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108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/*
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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Consult the COPYING file in the top-level source directory of this
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module for the precise wording of the license and the list of
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copyright holders.
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*/
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#ifndef ECL_MPI_SERIALIZER_HH
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#define ECL_MPI_SERIALIZER_HH
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#include <opm/simulators/utils/ParallelRestart.hpp>
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namespace Opm {
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class EclMpiSerializer {
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public:
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enum class Operation {
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PACKSIZE,
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PACK,
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UNPACK
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};
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explicit EclMpiSerializer(Dune::CollectiveCommunication<Dune::MPIHelper::MPICommunicator> comm) :
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m_comm(comm)
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{}
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template<class T>
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void operator()(const T& data)
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{
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if (m_op == Operation::PACKSIZE)
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m_packSize += Mpi::packSize(data, m_comm);
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else if (m_op == Operation::PACK)
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Mpi::pack(data, m_buffer, m_position, m_comm);
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else if (m_op == Operation::UNPACK)
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Mpi::unpack(const_cast<T&>(data), m_buffer, m_position, m_comm);
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}
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template<class T>
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void pack(T& data)
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{
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m_op = Operation::PACKSIZE;
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m_packSize = 0;
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data.serializeOp(*this);
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m_position = 0;
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m_buffer.resize(m_packSize);
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m_op = Operation::PACK;
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data.serializeOp(*this);
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}
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template<class T>
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void unpack(T& data)
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{
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m_position = 0;
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m_op = Operation::UNPACK;
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data.serializeOp(*this);
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}
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template<class T>
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void broadcast(T& data)
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{
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if (m_comm.size() == 1)
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return;
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#if HAVE_MPI
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if (m_comm.rank() == 0) {
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pack(data);
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m_comm.broadcast(&m_position, 1, 0);
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m_comm.broadcast(m_buffer.data(), m_position, 0);
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} else {
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m_comm.broadcast(&m_packSize, 1, 0);
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m_buffer.resize(m_packSize);
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m_comm.broadcast(m_buffer.data(), m_packSize, 0);
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unpack(data);
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}
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#endif
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}
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size_t position() const
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{
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return m_position;
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}
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protected:
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Dune::CollectiveCommunication<Dune::MPIHelper::MPICommunicator> m_comm;
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Operation m_op = Operation::PACKSIZE;
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size_t m_packSize = 0;
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int m_position = 0;
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std::vector<char> m_buffer;
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};
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}
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#endif
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