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lm_communicator.hh
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/**
* @file communicator.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date Fri Nov 08 12:44:53 2013
*
* @brief Mother class of LM communicators
*
* @section LICENSE
*
* Copyright INRIA and CEA
*
* The LibMultiScale is a C++ parallel framework for the multiscale
* coupling methods dedicated to material simulations. This framework
* provides an API which makes it possible to program coupled simulations
* and integration of already existing codes.
*
* This Project was initiated in a collaboration between INRIA Futurs Bordeaux
* within ScAlApplix team and CEA/DPTA Ile de France.
* The project is now continued at the Ecole Polytechnique Fédérale de Lausanne
* within the LSMS/ENAC laboratory.
*
* This software is governed by the CeCILL-C license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/ or redistribute the software under the terms of the CeCILL-C
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty and the software's author, the holder of the
* economic rights, and the successive licensors have only limited
* liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading, using, modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean that it is complicated to manipulate, and that also
* therefore means that it is reserved for developers and experienced
* professionals having in-depth computer knowledge. Users are therefore
* encouraged to load and test the software's suitability as regards their
* requirements in conditions enabling the security of their systems and/or
* data to be ensured and, more generally, to use and operate it in the
* same conditions as regards security.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL-C license and that you accept its terms.
*
*/
#ifndef __LIBMULTISCALE_COMMUNICATOR_HH__
#define __LIBMULTISCALE_COMMUNICATOR_HH__
/* -------------------------------------------------------------------------- */
#include "comm_group.hh"
#include "id_manager.hh"
#include "tensor.hh"
#include <memory>
#include <mpi.h>
/* -------------------------------------------------------------------------- */
__BEGIN_LIBMULTISCALE__
/* -------------------------------------------------------------------------- */
class Geometry;
/* -------------------------------------------------------------------------- */
class Communicator : public IDManager<CommGroup> {
public:
Communicator();
virtual ~Communicator();
//! return the communicator used
static Communicator &getCommunicator();
//! create the communicator
static void createCommunicator();
//! reset the communicator
void reset();
//! add a group of nb_proc processors
void addGroup(const LMID &id, UInt nb_procs);
//! return the number of registered objects
static UInt getNbGroups();
//! get the groups
static decltype(objects) &getGroups();
//! get a group by its name
static CommGroup &getGroup(const LMID &id);
//! return the number of still free processors
UInt getNumberFreeProcs();
//! wait for unsynchronisated comunications
void waitForPendingComs();
//! datatypes to be sent through MPI coms
static MPI_Datatype mpi_type_processor;
};
/* -------------------------------------------------------------------------- */
__END_LIBMULTISCALE__
/* -------------------------------------------------------------------------- */
#include "comm_group_inline_impl.hh"
#endif /* __LIBMULTISCALE_COMMUNICATOR_HH__ */

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