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static_communicator.hh
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/**
* @file static_communicator.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Sep 01 2010
* @date last modification: Mon Jul 21 2014
*
* @brief Class handling the parallel communications
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 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/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_STATIC_COMMUNICATOR_HH__
#define __AKANTU_STATIC_COMMUNICATOR_HH__
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "aka_event_handler_manager.hh"
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
#define AKANTU_COMMUNICATOR_LIST_0 BOOST_PP_SEQ_NIL
#include "static_communicator_dummy.hh"
#define AKANTU_COMMUNICATOR_LIST_1 \
BOOST_PP_SEQ_PUSH_BACK(AKANTU_COMMUNICATOR_LIST_0, \
(_communicator_dummy, (StaticCommunicatorDummy, BOOST_PP_NIL)))
#if defined(AKANTU_USE_MPI)
# include "static_communicator_mpi.hh"
# define AKANTU_COMMUNICATOR_LIST_ALL \
BOOST_PP_SEQ_PUSH_BACK(AKANTU_COMMUNICATOR_LIST_1, \
(_communicator_mpi, (StaticCommunicatorMPI, BOOST_PP_NIL)))
#else
# define AKANTU_COMMUNICATOR_LIST_ALL AKANTU_COMMUNICATOR_LIST_1
#endif // AKANTU_COMMUNICATOR_LIST
#include "real_static_communicator.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
class RealStaticCommunicator;
struct FinalizeCommunicatorEvent {
FinalizeCommunicatorEvent(const StaticCommunicator & comm) : communicator(comm) {}
const StaticCommunicator & communicator;
};
class CommunicatorEventHandler {
public:
virtual ~CommunicatorEventHandler() {}
virtual void onCommunicatorFinalize(__attribute__((unused)) const StaticCommunicator & communicator) { }
private:
inline void sendEvent(const FinalizeCommunicatorEvent & event) {
onCommunicatorFinalize(event.communicator);
}
template<class EventHandler>
friend class EventHandlerManager;
};
class StaticCommunicator : public EventHandlerManager<CommunicatorEventHandler>{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
protected:
StaticCommunicator(int & argc, char ** & argv,
CommunicatorType type = _communicator_mpi);
public:
virtual ~StaticCommunicator() {
FinalizeCommunicatorEvent *event = new FinalizeCommunicatorEvent(*this);
this->sendEvent(*event);
delete event;
delete real_static_communicator;
};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Point to Point */
/* ------------------------------------------------------------------------ */
template<typename T> inline void send(T * buffer, Int size,
Int receiver, Int tag);
template<typename T> inline void receive(T * buffer, Int size,
Int sender, Int tag);
template<typename T> inline CommunicationRequest * asyncSend(T * buffer,
Int size,
Int receiver,
Int tag);
template<typename T> inline CommunicationRequest * asyncReceive(T * buffer,
Int size,
Int sender,
Int tag);
template<typename T> inline void probe(Int sender, Int tag,
CommunicationStatus & status);
/* ------------------------------------------------------------------------ */
/* Collectives */
/* ------------------------------------------------------------------------ */
template<typename T> inline void allReduce(T * values, int nb_values,
const SynchronizerOperation & op);
template<typename T> inline void allGather(T * values, int nb_values);
template<typename T> inline void allGatherV(T * values, int * nb_values);
template<typename T> inline void gather(T * values, int nb_values,
int root = 0);
template<typename T> inline void gatherV(T * values, int * nb_values,
int root = 0);
template<typename T> inline void broadcast(T * values, int nb_values,
int root = 0);
inline void barrier();
/* ------------------------------------------------------------------------ */
/* Request handling */
/* ------------------------------------------------------------------------ */
inline bool testRequest(CommunicationRequest * request);
inline void wait(CommunicationRequest * request);
inline void waitAll(std::vector<CommunicationRequest *> & requests);
inline void freeCommunicationRequest(CommunicationRequest * request);
inline void freeCommunicationRequest(std::vector<CommunicationRequest *> & requests);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
virtual Int getNbProc() const { return real_static_communicator->psize; };
virtual Int whoAmI() const { return real_static_communicator->prank; };
AKANTU_GET_MACRO(RealStaticCommunicator, *real_static_communicator, const RealStaticCommunicator &);
AKANTU_GET_MACRO_NOT_CONST(RealStaticCommunicator, *real_static_communicator, RealStaticCommunicator &);
template<class Comm>
Comm & getRealStaticCommunicator() { return dynamic_cast<Comm &>(*real_static_communicator); }
static StaticCommunicator & getStaticCommunicator(CommunicatorType type = _communicator_mpi);
static StaticCommunicator & getStaticCommunicator(int & argc, char ** & argv,
CommunicatorType type = _communicator_mpi);
static bool isInstantiated() { return is_instantiated; };
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
static bool is_instantiated;
static StaticCommunicator * static_communicator;
RealStaticCommunicator * real_static_communicator;
CommunicatorType real_type;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "static_communicator_inline_impl.hh"
/* -------------------------------------------------------------------------- */
/* Inline Functions ArrayBase */
/* -------------------------------------------------------------------------- */
inline std::ostream & operator<<(std::ostream & stream, const CommunicationRequest & _this)
{
_this.printself(stream);
return stream;
}
__END_AKANTU__
#endif /* __AKANTU_STATIC_COMMUNICATOR_HH__ */

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