150 строки
5.6 KiB
C
150 строки
5.6 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
|
|
/*
|
|
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2010 University of Houston. All rights reserved.
|
|
* Copyright (c) 2012 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2012-2013 Los Alamos National Security, LLC. All rights
|
|
* reserved.
|
|
* Copyright (c) 2015 Research Organization for Information Science
|
|
* and Technology (RIST). All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "ompi_config.h"
|
|
#include <stdio.h>
|
|
|
|
#include "ompi/mpi/c/bindings.h"
|
|
#include "ompi/runtime/params.h"
|
|
#include "ompi/communicator/communicator.h"
|
|
#include "ompi/errhandler/errhandler.h"
|
|
#include "ompi/datatype/ompi_datatype.h"
|
|
#include "ompi/memchecker.h"
|
|
|
|
#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
|
#pragma weak MPI_Neighbor_allgatherv = PMPI_Neighbor_allgatherv
|
|
#endif
|
|
|
|
#if OMPI_PROFILING_DEFINES
|
|
#include "ompi/mpi/c/profile/defines.h"
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Neighbor_allgatherv";
|
|
|
|
|
|
int MPI_Neighbor_allgatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
|
|
void *recvbuf, const int recvcounts[], const int displs[],
|
|
MPI_Datatype recvtype, MPI_Comm comm)
|
|
{
|
|
int i, size, err;
|
|
|
|
MEMCHECKER(
|
|
int rank;
|
|
ptrdiff_t ext;
|
|
|
|
rank = ompi_comm_rank(comm);
|
|
size = ompi_comm_size(comm);
|
|
ompi_datatype_type_extent(recvtype, &ext);
|
|
|
|
memchecker_datatype(recvtype);
|
|
memchecker_comm (comm);
|
|
/* check whether the receive buffer is addressable. */
|
|
for (i = 0; i < size; i++) {
|
|
memchecker_call(&opal_memchecker_base_isaddressable,
|
|
(char *)(recvbuf)+displs[i]*ext,
|
|
recvcounts[i], recvtype);
|
|
}
|
|
|
|
/* check whether the actual send buffer is defined. */
|
|
if (MPI_IN_PLACE == sendbuf) {
|
|
memchecker_call(&opal_memchecker_base_isdefined,
|
|
(char *)(recvbuf)+displs[rank]*ext,
|
|
recvcounts[rank], recvtype);
|
|
} else {
|
|
memchecker_datatype(sendtype);
|
|
memchecker_call(&opal_memchecker_base_isdefined, sendbuf, sendcount, sendtype);
|
|
}
|
|
);
|
|
|
|
if (MPI_PARAM_CHECK) {
|
|
|
|
/* Unrooted operation -- same checks for all ranks on both
|
|
intracommunicators and intercommunicators */
|
|
|
|
err = MPI_SUCCESS;
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
if (ompi_comm_invalid(comm) || !(OMPI_COMM_IS_CART(comm) || OMPI_COMM_IS_GRAPH(comm) ||
|
|
OMPI_COMM_IS_DIST_GRAPH(comm))) {
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
|
|
FUNC_NAME);
|
|
} else if (MPI_IN_PLACE == recvbuf) {
|
|
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
|
|
} else if (MPI_DATATYPE_NULL == recvtype) {
|
|
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
|
|
}
|
|
|
|
if (MPI_IN_PLACE != sendbuf) {
|
|
OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
|
|
}
|
|
OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
|
|
|
|
/* We always define the remote group to be the same as the local
|
|
group in the case of an intracommunicator, so it's safe to
|
|
get the size of the remote group here for both intra- and
|
|
intercommunicators */
|
|
|
|
size = ompi_comm_remote_size(comm);
|
|
for (i = 0; i < size; ++i) {
|
|
if (recvcounts[i] < 0) {
|
|
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
|
|
}
|
|
}
|
|
|
|
if (NULL == displs) {
|
|
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_BUFFER, FUNC_NAME);
|
|
}
|
|
}
|
|
|
|
/* Do we need to do anything? Everyone had to give the same
|
|
signature, which means that everyone must have given a
|
|
sum(recvounts) > 0 if there's anything to do. */
|
|
|
|
if ( OMPI_COMM_IS_INTRA( comm) ) {
|
|
for (i = 0; i < ompi_comm_size(comm); ++i) {
|
|
if (0 != recvcounts[i]) {
|
|
break;
|
|
}
|
|
}
|
|
if (i >= ompi_comm_size(comm)) {
|
|
return MPI_SUCCESS;
|
|
}
|
|
}
|
|
/* There is no rule that can be applied for inter-communicators, since
|
|
recvcount(s)=0 only indicates that the processes in the other group
|
|
do not send anything, sendcount=0 only indicates that I do not send
|
|
anything. However, other processes in my group might very well send
|
|
something */
|
|
|
|
|
|
OPAL_CR_ENTER_LIBRARY();
|
|
|
|
/* Invoke the coll component to perform the back-end operation */
|
|
err = comm->c_coll.coll_neighbor_allgatherv(sendbuf, sendcount, sendtype,
|
|
recvbuf, recvcounts, displs,
|
|
recvtype, comm, comm->c_coll.coll_neighbor_allgatherv_module);
|
|
OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
|
|
}
|
|
|