6c5532072a
OMPI and a language agnostic part in OPAL. The convertor is completely moved into OPAL. This offers several benefits as described in RFC http://www.open-mpi.org/community/lists/devel/2009/07/6387.php namely: - Fewer basic types (int* and float* types, boolean and wchar - Fixing naming scheme to ompi-nomenclature. - Usability outside of the ompi-layer. - Due to the fixed nature of simple opal types, their information is completely known at compile time and therefore constified - With fewer datatypes (22), the actual sizes of bit-field types may be reduced from 64 to 32 bits, allowing reorganizing the opal_datatype structure, eliminating holes and keeping data required in convertor (upon send/recv) in one cacheline... This has implications to the convertor-datastructure and other parts of the code. - Several performance tests have been run, the netpipe latency does not change with this patch on Linux/x86-64 on the smoky cluster. - Extensive tests have been done to verify correctness (no new regressions) using: 1. mpi_test_suite on linux/x86-64 using clean ompi-trunk and ompi-ddt: a. running both trunk and ompi-ddt resulted in no differences (except for MPI_SHORT_INT and MPI_TYPE_MIX_LB_UB do now run correctly). b. with --enable-memchecker and running under valgrind (one buglet when run with static found in test-suite, commited) 2. ibm testsuite on linux/x86-64 using clean ompi-trunk and ompi-ddt: all passed (except for the dynamic/ tests failed!! as trunk/MTT) 3. compilation and usage of HDF5 tests on Jaguar using PGI and PathScale compilers. 4. compilation and usage on Scicortex. - Please note, that for the heterogeneous case, (-m32 compiled binaries/ompi), neither ompi-trunk, nor ompi-ddt branch would successfully launch. This commit was SVN r21641.
131 строка
4.3 KiB
C
131 строка
4.3 KiB
C
/*
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* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <stdio.h>
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/runtime/params.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/errhandler/errhandler.h"
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#include "ompi/datatype/ompi_datatype.h"
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#include "ompi/memchecker.h"
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#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Allgatherv = PMPI_Allgatherv
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "ompi/mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Allgatherv";
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int MPI_Allgatherv(void *sendbuf, int sendcount, MPI_Datatype sendtype,
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void *recvbuf, int *recvcounts,
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int *displs, MPI_Datatype recvtype, MPI_Comm comm)
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{
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int i, size, err;
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MEMCHECKER(
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int rank;
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ptrdiff_t ext;
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rank = ompi_comm_rank(comm);
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size = ompi_comm_size(comm);
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ompi_datatype_type_extent(recvtype, &ext);
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memchecker_datatype(recvtype);
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memchecker_comm (comm);
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/* check whether the receive buffer is addressable. */
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for (i = 0; i < size; i++) {
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memchecker_call(&opal_memchecker_base_isaddressable,
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(char *)(recvbuf)+displs[i]*ext,
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recvcounts[i], recvtype);
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}
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/* check whether the actual send buffer is defined. */
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if (MPI_IN_PLACE == sendbuf) {
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memchecker_call(&opal_memchecker_base_isdefined,
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(char *)(recvbuf)+displs[rank]*ext,
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recvcounts[rank], recvtype);
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} else {
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memchecker_datatype(sendtype);
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memchecker_call(&opal_memchecker_base_isdefined, sendbuf, sendcount, sendtype);
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}
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);
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if (MPI_PARAM_CHECK) {
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/* Unrooted operation -- same checks for all ranks on both
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intracommunicators and intercommunicators */
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err = MPI_SUCCESS;
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_comm_invalid(comm)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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} else if (MPI_IN_PLACE == recvbuf) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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} else if (MPI_DATATYPE_NULL == recvtype) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
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}
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if (MPI_IN_PLACE != sendbuf) {
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OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
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}
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OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
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size = ompi_comm_size(comm);
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for (i = 0; i < size; ++i) {
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if (recvcounts[i] < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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}
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if (NULL == displs) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_BUFFER, FUNC_NAME);
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}
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}
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/* Do we need to do anything? Everyone had to give the same
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signature, which means that everyone must have given a
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sum(recvounts) > 0 if there's anything to do. */
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for (i = 0; i < ompi_comm_size(comm); ++i) {
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if (0 != recvcounts[i]) {
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break;
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}
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}
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if (i >= ompi_comm_size(comm)) {
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return MPI_SUCCESS;
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}
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OPAL_CR_ENTER_LIBRARY();
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/* Invoke the coll component to perform the back-end operation */
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err = comm->c_coll.coll_allgatherv(sendbuf, sendcount, sendtype,
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recvbuf, recvcounts,
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displs, recvtype, comm,
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comm->c_coll.coll_allgatherv_module);
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OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
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}
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