2004-01-21 03:05:46 +03:00
|
|
|
/*
|
2004-11-22 04:38:40 +03:00
|
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University.
|
|
|
|
* All rights reserved.
|
|
|
|
* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
|
|
|
|
* All rights reserved.
|
2004-11-28 23:09:25 +03:00
|
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
|
|
* University of Stuttgart. All rights reserved.
|
2004-11-22 04:38:40 +03:00
|
|
|
* $COPYRIGHT$
|
|
|
|
*
|
|
|
|
* Additional copyrights may follow
|
|
|
|
*
|
2004-10-15 23:31:47 +04:00
|
|
|
* $HEADER$
|
2004-01-21 03:05:46 +03:00
|
|
|
*/
|
2004-06-07 19:33:53 +04:00
|
|
|
#include "ompi_config.h"
|
2004-01-21 03:05:46 +03:00
|
|
|
#include <stdio.h>
|
|
|
|
|
|
|
|
#include "mpi.h"
|
2004-03-17 21:45:16 +03:00
|
|
|
#include "mpi/c/bindings.h"
|
2004-04-22 00:55:54 +04:00
|
|
|
#include "communicator/communicator.h"
|
|
|
|
#include "mca/topo/topo.h"
|
|
|
|
#include "errhandler/errhandler.h"
|
2004-01-21 03:05:46 +03:00
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
2004-01-21 03:05:46 +03:00
|
|
|
#pragma weak MPI_Cart_create = PMPI_Cart_create
|
|
|
|
#endif
|
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
#if OMPI_PROFILING_DEFINES
|
2004-04-20 22:50:43 +04:00
|
|
|
#include "mpi/c/profile/defines.h"
|
|
|
|
#endif
|
|
|
|
|
2004-07-30 06:58:53 +04:00
|
|
|
static const char FUNC_NAME[] = "MPI_Cart_create";
|
|
|
|
|
|
|
|
|
2004-01-21 03:05:46 +03:00
|
|
|
int MPI_Cart_create(MPI_Comm old_comm, int ndims, int *dims,
|
2004-04-22 00:55:54 +04:00
|
|
|
int *periods, int reorder, MPI_Comm *comm_cart) {
|
|
|
|
|
|
|
|
int err;
|
2004-07-21 02:21:47 +04:00
|
|
|
bool re_order = false;
|
2004-04-22 00:55:54 +04:00
|
|
|
|
|
|
|
/* check the arguments */
|
|
|
|
if (MPI_PARAM_CHECK) {
|
2004-07-30 06:58:53 +04:00
|
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
2004-04-22 00:55:54 +04:00
|
|
|
if (MPI_COMM_NULL == old_comm) {
|
2004-06-07 19:33:53 +04:00
|
|
|
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_COMM,
|
2004-07-30 06:58:53 +04:00
|
|
|
FUNC_NAME);
|
2004-04-22 00:55:54 +04:00
|
|
|
}
|
2004-06-07 19:33:53 +04:00
|
|
|
if (OMPI_COMM_IS_INTER(old_comm)) {
|
|
|
|
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_COMM,
|
2004-07-30 06:58:53 +04:00
|
|
|
FUNC_NAME);
|
2004-04-22 00:55:54 +04:00
|
|
|
}
|
|
|
|
if (1 > ndims) {
|
2004-06-07 19:33:53 +04:00
|
|
|
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_ARG,
|
2004-07-30 06:58:53 +04:00
|
|
|
FUNC_NAME);
|
2004-04-22 00:55:54 +04:00
|
|
|
}
|
|
|
|
if (NULL == dims || NULL == periods || NULL == comm_cart) {
|
2004-06-07 19:33:53 +04:00
|
|
|
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_ARG,
|
2004-07-30 06:58:53 +04:00
|
|
|
FUNC_NAME);
|
2004-04-22 00:55:54 +04:00
|
|
|
}
|
2004-07-21 02:21:47 +04:00
|
|
|
if (0 > reorder || 1 < reorder) {
|
|
|
|
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_ARG,
|
2004-07-30 06:58:53 +04:00
|
|
|
FUNC_NAME);
|
2004-07-21 02:21:47 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* check if the number of processes on the grid are corrct */
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
int *p = dims;
|
|
|
|
int count_nodes = 1;
|
|
|
|
int parent_procs = ompi_comm_size(old_comm);
|
|
|
|
|
|
|
|
for (i=0; i < ndims; i++) {
|
|
|
|
count_nodes *= *p;
|
|
|
|
p++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (parent_procs < count_nodes) {
|
|
|
|
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_ARG,
|
2004-07-30 06:58:53 +04:00
|
|
|
FUNC_NAME);
|
2004-07-21 02:21:47 +04:00
|
|
|
}
|
|
|
|
}
|
2004-04-22 00:55:54 +04:00
|
|
|
}
|
|
|
|
|
2004-07-21 02:21:47 +04:00
|
|
|
/* everything seems to be alright with the communicator, we can go
|
|
|
|
* ahead and select a topology module for this purpose and create
|
|
|
|
* the new cartesian communicator
|
|
|
|
*/
|
|
|
|
|
|
|
|
re_order = (1 == reorder)? true :false;
|
|
|
|
|
|
|
|
err = ompi_topo_create (old_comm,
|
|
|
|
ndims,
|
|
|
|
dims,
|
|
|
|
periods,
|
|
|
|
re_order,
|
|
|
|
comm_cart,
|
|
|
|
OMPI_COMM_CART);
|
|
|
|
|
|
|
|
/* check the error status */
|
|
|
|
if (MPI_SUCCESS != err) {
|
2004-07-30 06:58:53 +04:00
|
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, err, FUNC_NAME);
|
2004-04-22 00:55:54 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* All done */
|
2004-01-21 03:05:46 +03:00
|
|
|
return MPI_SUCCESS;
|
|
|
|
}
|