ReservoirCouplingSpawnSlaves.hpp

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/*
  Copyright 2024 Equinor ASA
 
  This file is part of the Open Porous Media project (OPM).
 
  OPM is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  OPM 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 General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef OPM_RESERVOIR_COUPLING_SPAWN_SLAVES_HPP
#define OPM_RESERVOIR_COUPLING_SPAWN_SLAVES_HPP
 
#include <opm/simulators/utils/ParallelCommunication.hpp>
#include <opm/simulators/flow/rescoup/ReservoirCoupling.hpp>
#include <opm/simulators/flow/rescoup/ReservoirCouplingMaster.hpp>
 
#include <opm/input/eclipse/Schedule/ResCoup/ReservoirCouplingInfo.hpp>
#include <opm/input/eclipse/Schedule/Schedule.hpp>
#include <opm/common/OpmLog/OpmLog.hpp>
 
#include <mpi.h>
 
#include <filesystem>
#include <vector>
 
namespace Opm {
 
template <class Scalar>
class ReservoirCouplingSpawnSlaves {
public:
    using MessageTag = ReservoirCoupling::MessageTag;
 
    ReservoirCouplingSpawnSlaves(
        ReservoirCouplingMaster<Scalar> &master,
        const ReservoirCoupling::CouplingInfo &rescoup
    );
 
    void spawn();
 
private:
    void createMasterGroupNameOrder_();
    void createMasterGroupToSlaveNameMap_();
    void createSlaveNameToMasterGroupsMap_();
    std::pair<std::vector<char>, std::size_t>
        getMasterGroupNamesForSlave_(std::size_t slave_idx) const;
    std::vector<char *> getSlaveArgv_(
        const std::filesystem::path &data_file,
        const std::string &slave_name,
        std::string &log_filename) const;
    void receiveActivationDateFromSlaves_();
    void receiveSimulationStartDateFromSlaves_();
    void sendMasterGroupNamesToSlaves_();
    void sendSlaveNamesToSlaves_();
    void spawnSlaveProcesses_();
 
    ReservoirCouplingMaster<Scalar> &master_;
    const ReservoirCoupling::CouplingInfo &rescoup_;
    const Parallel::Communication &comm_;
    ReservoirCoupling::Logger logger_;
};
 
} // namespace Opm
#endif // OPM_RESERVOIR_COUPLING_SPAWN_SLAVES_HPP