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openmpi/ompi/mca/topo/base/topo_base_cart_get.c
Brian Barrett 566a050c23 Next step in the project split, mainly source code re-arranging
- move files out of toplevel include/ and etc/, moving it into the
    sub-projects
  - rather than including config headers with <project>/include, 
    have them as <project>
  - require all headers to be included with a project prefix, with
    the exception of the config headers ({opal,orte,ompi}_config.h
    mpi.h, and mpif.h)

This commit was SVN r8985.
2006-02-12 01:33:29 +00:00

65 строки
2.1 KiB
C

/*
* Copyright (c) 2004-2005 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) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mca/topo/base/base.h"
#include "ompi/communicator/communicator.h"
#include "ompi/mca/topo/topo.h"
/*
* function - retrieves Cartesian topology information associated with a
* communicator
*
* @param comm communicator with cartesian structure (handle)
* @param maxdims length of vectors 'dims', 'periods', and 'coords'
* in the calling program (integer)
* @param dims number of processes for each cartesian dimension (array of integer)
* @param periods periodicity (true/false) for each cartesian dimension
* (array of logical)
* @param coords coordinates of calling process in cartesian structure
* (array of integer)
*
* @retval MPI_SUCCESS
*/
int mca_topo_base_cart_get (MPI_Comm comm,
int maxdims,
int *dims,
int *periods,
int *coords){
int i;
int *d;
int *c;
d = comm->c_topo_comm->mtc_dims_or_index;
c = comm->c_topo_comm->mtc_coords;
for (i = 0; (i < comm->c_topo_comm->mtc_ndims_or_nnodes) && (i < maxdims); ++i) {
if (*d > 0) {
*dims++ = *d++;
*periods++ = 0;
} else {
*dims++ = -(*d++);
*periods++ = 1;
}
*coords++ = *c++;
}
return MPI_SUCCESS;
}