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synchronizer.hh
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/**
* @file synchronizer.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Tue Feb 20 2018
*
* @brief Common interface for synchronizers
*
* @section LICENSE
*
* Copyright (©) 2010-2018 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 "aka_memory.hh"
/* -------------------------------------------------------------------------- */
#include <map>
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_SYNCHRONIZER_HH__
#define __AKANTU_SYNCHRONIZER_HH__
namespace akantu {
class Communicator;
}
namespace akantu {
/* -------------------------------------------------------------------------- */
/* Base class for synchronizers */
/* -------------------------------------------------------------------------- */
class Synchronizer : protected Memory {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
Synchronizer(const Communicator & comm, const ID & id = "synchronizer",
MemoryID memory_id = 0);
Synchronizer(const Synchronizer & other) = default;
~Synchronizer() override = default;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// synchronous communications form slaves to master
template <class DataAccessor>
void slaveReductionOnce(DataAccessor & data_accessor,
const SynchronizationTag & tag) const;
/// synchronize ghosts without state
template <class DataAccessor>
void synchronizeOnce(DataAccessor & data_accessor,
const SynchronizationTag & tag) const;
/// synchronize ghosts
template <class DataAccessor>
void synchronize(DataAccessor & data_accessor,
const SynchronizationTag & tag);
/// asynchronous synchronization of ghosts
template <class DataAccessor>
void asynchronousSynchronize(const DataAccessor & data_accessor,
const SynchronizationTag & tag);
/// wait end of asynchronous synchronization of ghosts
template <class DataAccessor>
void waitEndSynchronize(DataAccessor & data_accessor,
const SynchronizationTag & tag);
/// compute buffer size for a given tag and data accessor
template <class DataAccessor>
void computeBufferSize(const DataAccessor & data_accessor,
const SynchronizationTag & tag);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
AKANTU_GET_MACRO(Communicator, communicator, const Communicator &);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// id of the synchronizer
ID id;
/// hashed version of the id
int hash_id;
/// message counter per tag
std::map<SynchronizationTag, UInt> tag_counter;
/// the static memory instance
const Communicator & communicator;
/// nb processors in the communicator
UInt nb_proc;
/// rank in the communicator
UInt rank;
};
} // namespace akantu
#include "synchronizer_tmpl.hh"
#endif /* __AKANTU_SYNCHRONIZER_HH__ */
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