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rAKA/src/synchronizer/static_communicator_mpi.cc
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static_communicator_mpi.cc
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/**
* @file static_communicator_mpi.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Sun Sep 26 2010
* @date last modification: Mon Jul 21 2014
*
* @brief StaticCommunicatorMPI implementation
*
* @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/>.
*
*/
/* -------------------------------------------------------------------------- */
#include <iostream>
/* -------------------------------------------------------------------------- */
#include "static_communicator_mpi.hh"
#include "mpi_type_wrapper.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
MPI_Op MPITypeWrapper::synchronizer_operation_to_mpi_op[_so_null + 1] = {
MPI_SUM,
MPI_MIN,
MPI_MAX,
MPI_OP_NULL
};
class CommunicationRequestMPI : public CommunicationRequest {
public:
CommunicationRequestMPI(UInt source, UInt dest);
~CommunicationRequestMPI();
MPI_Request * getMPIRequest() { return request; };
private:
MPI_Request * request;
};
/* -------------------------------------------------------------------------- */
/* Implementation */
/* -------------------------------------------------------------------------- */
CommunicationRequestMPI::CommunicationRequestMPI(UInt source, UInt dest) :
CommunicationRequest(source, dest) {
request = new MPI_Request;
}
/* -------------------------------------------------------------------------- */
CommunicationRequestMPI::~CommunicationRequestMPI() {
delete request;
}
/* -------------------------------------------------------------------------- */
StaticCommunicatorMPI::StaticCommunicatorMPI(int & argc, char ** & argv) :
RealStaticCommunicator(argc, argv) {
if(argc != 0) {
MPI_Init(&argc, &argv);
}
mpi_data = new MPITypeWrapper(*this);
mpi_data->setMPICommunicator(MPI_COMM_WORLD);
}
/* -------------------------------------------------------------------------- */
StaticCommunicatorMPI::~StaticCommunicatorMPI() {
MPI_Finalize();
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::send(T * buffer, Int size,
Int receiver, Int tag) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Send(buffer, size, type, receiver, tag, communicator);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Send.");
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::receive(T * buffer, Int size,
Int sender, Int tag) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
MPI_Status status;
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Recv(buffer, size, type, sender, tag, communicator, &status);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Recv.");
}
/* -------------------------------------------------------------------------- */
template<typename T>
CommunicationRequest * StaticCommunicatorMPI::asyncSend(T * buffer, Int size,
Int receiver, Int tag) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
CommunicationRequestMPI * request = new CommunicationRequestMPI(prank, receiver);
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Isend(buffer, size, type, receiver, tag, communicator, request->getMPIRequest());
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Isend.");
return request;
}
/* -------------------------------------------------------------------------- */
template<typename T>
CommunicationRequest * StaticCommunicatorMPI::asyncReceive(T * buffer, Int size,
Int sender, Int tag) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
CommunicationRequestMPI * request = new CommunicationRequestMPI(sender, prank);
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Irecv(buffer, size, type, sender, tag, communicator, request->getMPIRequest());
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Irecv.");
return request;
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::probe(Int sender, Int tag,
CommunicationStatus & status) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
MPI_Status mpi_status;
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Probe(sender, tag, communicator, &mpi_status);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Probe.");
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
int count;
MPI_Get_count(&mpi_status, type, &count);
status.setSource(mpi_status.MPI_SOURCE);
status.setTag(mpi_status.MPI_TAG);
status.setSize(count);
}
/* -------------------------------------------------------------------------- */
bool StaticCommunicatorMPI::testRequest(CommunicationRequest * request) {
MPI_Status status;
int flag;
CommunicationRequestMPI * req_mpi = static_cast<CommunicationRequestMPI *>(request);
MPI_Request * req = req_mpi->getMPIRequest();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Test(req, &flag, &status);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Test.");
return (flag != 0);
}
/* -------------------------------------------------------------------------- */
void StaticCommunicatorMPI::wait(CommunicationRequest * request) {
MPI_Status status;
CommunicationRequestMPI * req_mpi = static_cast<CommunicationRequestMPI *>(request);
MPI_Request * req = req_mpi->getMPIRequest();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Wait(req, &status);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Wait.");
}
/* -------------------------------------------------------------------------- */
void StaticCommunicatorMPI::waitAll(std::vector<CommunicationRequest *> & requests) {
MPI_Status status;
std::vector<CommunicationRequest *>::iterator it;
for(it = requests.begin(); it != requests.end(); ++it) {
MPI_Request * req = static_cast<CommunicationRequestMPI *>(*it)->getMPIRequest();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Wait(req, &status);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Wait.");
}
}
/* -------------------------------------------------------------------------- */
void StaticCommunicatorMPI::barrier() {
MPI_Comm communicator = mpi_data->getMPICommunicator();
MPI_Barrier(communicator);
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::allReduce(T * values, Int nb_values,
const SynchronizerOperation & op) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Allreduce(MPI_IN_PLACE, values, nb_values, type,
MPITypeWrapper::getMPISynchronizerOperation(op),
communicator);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Allreduce.");
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::allGather(T * values, Int nb_values) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Allgather(MPI_IN_PLACE, nb_values, type, values, nb_values, type, communicator);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Allgather.");
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::allGatherV(T * values, Int * nb_values) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
Int * displs = new Int[psize];
displs[0] = 0;
for (Int i = 1; i < psize; ++i) {
displs[i] = displs[i-1] + nb_values[i-1];
}
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Allgatherv(MPI_IN_PLACE, *nb_values, type, values, nb_values, displs, type, communicator);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Gather.");
delete [] displs;
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::gather(T * values, Int nb_values, Int root) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
T * send_buf = NULL, * recv_buf = NULL;
if(prank == root) {
send_buf = (T *) MPI_IN_PLACE;
recv_buf = values;
} else {
send_buf = values;
}
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Gather(send_buf, nb_values, type, recv_buf, nb_values, type, root, communicator);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Gather.");
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::gatherV(T * values, Int * nb_values, Int root) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
Int * displs = NULL;
if(prank == root) {
displs = new Int[psize];
displs[0] = 0;
for (Int i = 1; i < psize; ++i) {
displs[i] = displs[i-1] + nb_values[i-1];
}
}
T * send_buf = NULL, * recv_buf = NULL;
if(prank == root) {
send_buf = (T *) MPI_IN_PLACE;
recv_buf = values;
} else send_buf = values;
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Gatherv(send_buf, *nb_values, type, recv_buf, nb_values, displs, type, root, communicator);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Gather.");
if(prank == root) {
delete [] displs;
}
}
/* -------------------------------------------------------------------------- */
template<typename T>
void StaticCommunicatorMPI::broadcast(T * values, Int nb_values, Int root) {
MPI_Comm communicator = mpi_data->getMPICommunicator();
MPI_Datatype type = MPITypeWrapper::getMPIDatatype<T>();
#if !defined(AKANTU_NDEBUG)
int ret =
#endif
MPI_Bcast(values, nb_values, type, root, communicator);
AKANTU_DEBUG_ASSERT(ret == MPI_SUCCESS, "Error in MPI_Gather.");
}
/* -------------------------------------------------------------------------- */
// template<typename T>
// MPI_Datatype StaticCommunicatorMPI::getMPIDatatype() {
// return MPI_DATATYPE_NULL;
// }
template<>
MPI_Datatype MPITypeWrapper::getMPIDatatype<char>() {
return MPI_CHAR;
}
template<>
MPI_Datatype MPITypeWrapper::getMPIDatatype<Real>() {
return MPI_DOUBLE;
}
template<>
MPI_Datatype MPITypeWrapper::getMPIDatatype<UInt>() {
return MPI_UNSIGNED;
}
template<>
MPI_Datatype MPITypeWrapper::getMPIDatatype<Int>() {
return MPI_INT;
}
/* -------------------------------------------------------------------------- */
/* Template instantiation */
/* -------------------------------------------------------------------------- */
#define AKANTU_MPI_COMM_INSTANTIATE(T) \
template void StaticCommunicatorMPI::send<T> (T * buffer, Int size, Int receiver, Int tag); \
template void StaticCommunicatorMPI::receive<T>(T * buffer, Int size, Int sender, Int tag); \
template CommunicationRequest * StaticCommunicatorMPI::asyncSend<T> (T * buffer, Int size, Int receiver, Int tag); \
template CommunicationRequest * StaticCommunicatorMPI::asyncReceive<T>(T * buffer, Int size, Int sender, Int tag); \
template void StaticCommunicatorMPI::probe<T>(Int sender, Int tag, CommunicationStatus & status); \
template void StaticCommunicatorMPI::allGather<T> (T * values, Int nb_values); \
template void StaticCommunicatorMPI::allGatherV<T>(T * values, Int * nb_values); \
template void StaticCommunicatorMPI::gather<T> (T * values, Int nb_values, Int root); \
template void StaticCommunicatorMPI::gatherV<T>(T * values, Int * nb_values, Int root); \
template void StaticCommunicatorMPI::broadcast<T>(T * values, Int nb_values, Int root); \
template void StaticCommunicatorMPI::allReduce<T>(T * values, Int nb_values, const SynchronizerOperation & op);
AKANTU_MPI_COMM_INSTANTIATE(Real);
AKANTU_MPI_COMM_INSTANTIATE(UInt);
AKANTU_MPI_COMM_INSTANTIATE(Int);
AKANTU_MPI_COMM_INSTANTIATE(char);
__END_AKANTU__
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