008fa8c5cc
* Various changes to enable 0-dimensional cartesian communicators:
* Set various mtc_* members to NULL when there are 0 dimensions (and
don't bother trying to memcpy these arrays when duplicating the
communicator -- because they're NULL)
* adjust topo_base_cart_sub to correctly handle 0 dimensions
(simplified it a bit)
* adjust a few error codes to return ERR_OUT_OF_RESOURCE
* adjust error checking of CART_CREATE, CART_RANK
* Allow MPI_GRAPH_CREATE to accept 0 == nnodes.
* Bump reported MPI version in mpi.h to 2.1
This commit was SVN r19461.
The following Trac tickets were found above:
Ticket 1236 --> https://svn.open-mpi.org/trac/ompi/ticket/1236
110 строки
3.7 KiB
C
110 строки
3.7 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 (c) 2007-2008 Cisco Systems, Inc. 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/mca/topo/topo.h"
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#include "ompi/memchecker.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Cart_rank = PMPI_Cart_rank
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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_Cart_rank";
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int MPI_Cart_rank(MPI_Comm comm, int *coords, int *rank)
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{
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int i, err;
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mca_topo_base_module_cart_rank_fn_t func;
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MEMCHECKER(
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memchecker_comm(comm);
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);
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/* check the arguments */
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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(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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}
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if (OMPI_COMM_IS_INTER(comm)) {
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return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_COMM,
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FUNC_NAME);
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}
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if (!OMPI_COMM_IS_CART(comm)) {
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return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_TOPOLOGY,
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FUNC_NAME);
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}
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/* Per MPI-2.1, coords is only relevant if the dimension of
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the cartesian comm is >0 */
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if ((NULL == coords && comm->c_topo_comm->mtc_ndims_or_nnodes >= 1) ||
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(NULL == rank)){
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return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_ARG,
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FUNC_NAME);
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}
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/* Check if coords[i] is within the acceptable range if
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dimension i is not periodic */
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for (i = 0; i < comm->c_topo_comm->mtc_ndims_or_nnodes; ++i) {
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if (!comm->c_topo_comm->mtc_periods_or_edges[i] &&
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(coords[i] < 0 ||
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coords[i] > comm->c_topo_comm->mtc_dims_or_index[i])) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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}
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}
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}
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OPAL_CR_ENTER_LIBRARY();
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/* Normalize any coords[i] that is outside the appropriate range
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for dimensions that are periodic */
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for (i = 0; i < comm->c_topo_comm->mtc_ndims_or_nnodes; ++i) {
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if (comm->c_topo_comm->mtc_periods_or_edges[i] &&
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(coords[i] < 0 ||
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coords[i] >= comm->c_topo_comm->mtc_dims_or_index[i])) {
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if (coords[i] < 0) {
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coords[i] = (-coords[i]) %
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comm->c_topo_comm->mtc_dims_or_index[i];
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coords[i] = comm->c_topo_comm->mtc_dims_or_index[i] - coords[i];
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} else {
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coords[i] = coords[i] % comm->c_topo_comm->mtc_dims_or_index[i];
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}
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}
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}
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/* get the function pointer on this communicator */
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func = comm->c_topo->topo_cart_rank;
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/* call the function */
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err = func(comm, coords, rank);
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OPAL_CR_EXIT_LIBRARY();
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if ( MPI_SUCCESS != err ) {
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return OMPI_ERRHANDLER_INVOKE(comm, err, FUNC_NAME);
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}
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return MPI_SUCCESS;
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}
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