5fae72b9aa
This patch reshape the way we deal with topologies completely. Where our topologies were mainly storage components (they were not capable of creating the new communicator), the new version is built around a [possibly] common representation (in mca/topo/topo.h), but the functions to attach and retrieve the topological information are specific to each component. As a result the ompi_create_cart and ompi_create_graph functions become useless and have been removed. In addition to adding the internal infrastructure to manage the topology information, it updates the MPI interface, and the debuggers support and provides all Fortran interfaces. This commit was SVN r28687.
162 строки
5.5 KiB
C
162 строки
5.5 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) 2004-2008 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 (c) 2006-2012 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2006-2009 University of Houston. 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 <string.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/errhandler/errhandler.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/proc/proc.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_Intercomm_merge = PMPI_Intercomm_merge
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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_Intercomm_merge";
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int MPI_Intercomm_merge(MPI_Comm intercomm, int high,
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MPI_Comm *newcomm)
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{
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ompi_communicator_t *newcomp=MPI_COMM_NULL;
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ompi_proc_t **procs=NULL;
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int local_size, remote_size;
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int first;
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int total_size;
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int rc=MPI_SUCCESS;
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int thigh = high;
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ompi_group_t *new_group_pointer;
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MEMCHECKER(
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memchecker_comm(intercomm);
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);
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if ( MPI_PARAM_CHECK ) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_comm_invalid ( intercomm ) ||
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!( intercomm->c_flags & OMPI_COMM_INTER ) )
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return OMPI_ERRHANDLER_INVOKE ( MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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if ( NULL == newcomm )
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return OMPI_ERRHANDLER_INVOKE ( intercomm, MPI_ERR_ARG,
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FUNC_NAME);
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}
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OPAL_CR_ENTER_LIBRARY();
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local_size = ompi_comm_size ( intercomm );
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remote_size = ompi_comm_remote_size ( intercomm );
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total_size = local_size + remote_size;
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procs = (ompi_proc_t **) malloc ( total_size * sizeof(ompi_proc_t *));
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if ( NULL == procs ) {
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rc = MPI_ERR_INTERN;
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goto exit;
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}
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first = ompi_comm_determine_first ( intercomm, thigh );
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if ( MPI_UNDEFINED == first ) {
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rc = MPI_ERR_INTERN;
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goto exit;
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}
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if ( first ) {
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ompi_group_union ( intercomm->c_local_group, intercomm->c_remote_group, &new_group_pointer );
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}
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else {
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ompi_group_union ( intercomm->c_remote_group, intercomm->c_local_group, &new_group_pointer );
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}
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rc = ompi_comm_set ( &newcomp, /* new comm */
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intercomm, /* old comm */
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total_size, /* local_size */
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NULL, /* local_procs*/
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0, /* remote_size */
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NULL, /* remote_procs */
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NULL, /* attrs */
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intercomm->error_handler, /* error handler*/
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false, /* don't copy the topo */
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new_group_pointer, /* local group */
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NULL /* remote group */
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);
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if ( NULL == newcomp ) {
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rc = MPI_ERR_INTERN;
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goto exit;
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}
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if ( MPI_SUCCESS != rc ) {
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goto exit;
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}
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ompi_group_decrement_proc_count(new_group_pointer);
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OBJ_RELEASE(new_group_pointer);
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new_group_pointer = MPI_GROUP_NULL;
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/* Determine context id. It is identical to f_2_c_handle */
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rc = ompi_comm_nextcid ( newcomp, /* new comm */
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intercomm, /* old comm */
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NULL, /* bridge comm */
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NULL, /* local leader */
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NULL, /* remote_leader */
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OMPI_COMM_CID_INTER, /* mode */
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-1 ); /* send_first */
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if ( OMPI_SUCCESS != rc ) {
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goto exit;
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}
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/* activate communicator and init coll-module */
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rc = ompi_comm_activate( &newcomp, /* new comm */
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intercomm, /* old comm */
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NULL, /* bridge comm */
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NULL, /* local leader */
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NULL, /* remote_leader */
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OMPI_COMM_CID_INTER, /* mode */
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-1 ); /* send_first */
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if ( OMPI_SUCCESS != rc ) {
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goto exit;
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}
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exit:
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OPAL_CR_EXIT_LIBRARY();
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if ( NULL != procs ) {
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free ( procs );
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}
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if ( MPI_SUCCESS != rc ) {
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if ( MPI_COMM_NULL != newcomp && NULL != newcomp ) {
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OBJ_RELEASE(newcomp);
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}
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*newcomm = MPI_COMM_NULL;
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return OMPI_ERRHANDLER_INVOKE(intercomm, rc, FUNC_NAME);
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}
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*newcomm = newcomp;
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return MPI_SUCCESS;
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}
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