104 строки
3.5 KiB
C
104 строки
3.5 KiB
C
/*
|
|
* Copyright (c) 2004-2007 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) 2004-2006 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 (c) 2007 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2007-2008 Sun Microsystems, Inc. All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "ompi_config.h"
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "orte/util/show_help.h"
|
|
#include "ompi/mpi/c/bindings.h"
|
|
#include "ompi/constants.h"
|
|
|
|
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
|
#pragma weak MPI_Init = PMPI_Init
|
|
#endif
|
|
|
|
#if OMPI_PROFILING_DEFINES
|
|
#include "ompi/mpi/c/profile/defines.h"
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Init";
|
|
|
|
|
|
int MPI_Init(int *argc, char ***argv)
|
|
{
|
|
int err;
|
|
int provided;
|
|
char *env;
|
|
int required = MPI_THREAD_SINGLE;
|
|
|
|
/* Ensure that we were not already initialized or finalized */
|
|
|
|
if (ompi_mpi_finalized) {
|
|
if (0 == ompi_comm_rank(MPI_COMM_WORLD)) {
|
|
orte_show_help("help-mpi-api.txt",
|
|
"mpi-function-after-finalize", true, FUNC_NAME);
|
|
}
|
|
return ompi_errhandler_invoke(NULL, NULL,
|
|
OMPI_ERRHANDLER_TYPE_COMM,
|
|
MPI_ERR_OTHER, FUNC_NAME);
|
|
} else if (ompi_mpi_initialized) {
|
|
if (0 == ompi_comm_rank(MPI_COMM_WORLD)) {
|
|
orte_show_help("help-mpi-api.txt", "mpi-initialize-twice",
|
|
true, FUNC_NAME);
|
|
}
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_OTHER,
|
|
FUNC_NAME);
|
|
}
|
|
|
|
/* check for environment overrides for required thread level. If
|
|
there is, check to see that it is a valid/supported thread level.
|
|
If not, default to MPI_THREAD_MULTIPLE. */
|
|
|
|
if (NULL != (env = getenv("OMPI_MPI_THREAD_LEVEL"))) {
|
|
required = atoi(env);
|
|
if (required < MPI_THREAD_SINGLE || required > MPI_THREAD_MULTIPLE) {
|
|
required = MPI_THREAD_MULTIPLE;
|
|
}
|
|
}
|
|
|
|
/* Call the back-end initialization function (we need to put as
|
|
little in this function as possible so that if it's profiled, we
|
|
don't lose anything) */
|
|
|
|
if (NULL != argc && NULL != argv) {
|
|
err = ompi_mpi_init(*argc, *argv, required, &provided);
|
|
} else {
|
|
err = ompi_mpi_init(0, NULL, required, &provided);
|
|
}
|
|
|
|
/* Since we don't have a communicator to invoke an errorhandler on
|
|
here, don't use the fancy-schmancy ERRHANDLER macros; they're
|
|
really designed for real communicator objects. Just use the
|
|
back-end function directly. */
|
|
|
|
if (MPI_SUCCESS != err) {
|
|
return ompi_errhandler_invoke(NULL, NULL,
|
|
OMPI_ERRHANDLER_TYPE_COMM,
|
|
err <
|
|
0 ? ompi_errcode_get_mpi_code(err) :
|
|
err, FUNC_NAME);
|
|
}
|
|
|
|
OPAL_CR_INIT_LIBRARY();
|
|
|
|
return MPI_SUCCESS;
|
|
}
|