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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2020 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2008 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) 2006-2015 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2010-2012 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Intel, Inc. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include "opal/util/show_help.h"
#include "opal/util/printf.h"
#include "ompi/info/info.h"
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/runtime/mpiruntime.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/dpm/dpm.h"
#include "ompi/memchecker.h"
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Comm_spawn = PMPI_Comm_spawn
#endif
#define MPI_Comm_spawn PMPI_Comm_spawn
#endif
static const char FUNC_NAME[] = "MPI_Comm_spawn";
int MPI_Comm_spawn(const char *command, char *argv[], int maxprocs, MPI_Info info,
int root, MPI_Comm comm, MPI_Comm *intercomm,
int array_of_errcodes[])
{
int rank, rc=OMPI_SUCCESS, i, flag;
bool send_first = false; /* we wait to be contacted */
ompi_communicator_t *newcomp=MPI_COMM_NULL;
char port_name[MPI_MAX_PORT_NAME]; char *port_string = NULL;
bool non_mpi = false;
MEMCHECKER(
memchecker_comm(comm);
);
if ( MPI_PARAM_CHECK ) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if ( ompi_comm_invalid (comm)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_COMM,
FUNC_NAME);
}
if ( OMPI_COMM_IS_INTER(comm)) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COMM,
FUNC_NAME);
}
if ( (0 > root) || (ompi_comm_size(comm) <= root) ) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG,
FUNC_NAME);
}
if ( NULL == intercomm ) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG,
FUNC_NAME);
}
}
#if OPAL_ENABLE_FT_MPI
if( OPAL_UNLIKELY(!ompi_comm_iface_coll_check(comm, &rc)) ) {
return OMPI_ERRHANDLER_INVOKE(comm, rc, FUNC_NAME);
}
#endif
rank = ompi_comm_rank ( comm );
if ( MPI_PARAM_CHECK ) {
if ( rank == root ) {
if ( NULL == command ) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG,
FUNC_NAME);
}
if ( 0 > maxprocs ) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG,
FUNC_NAME);
}
if (NULL == info || ompi_info_is_freed(info)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_INFO,
FUNC_NAME);
}
}
}
if (!ompi_mpi_dynamics_is_enabled(FUNC_NAME)) {
return OMPI_ERRHANDLER_INVOKE(comm, OMPI_ERR_NOT_SUPPORTED, FUNC_NAME);
}
/* initialize the port name to avoid problems */
memset(port_name, 0, MPI_MAX_PORT_NAME);
/* See if the info key "ompi_non_mpi" was set to true */
if (rank == root) {
ompi_info_get_bool(info, "ompi_non_mpi", &non_mpi, &flag);
}
if ( rank == root ) {
if (!non_mpi) {
/* Open a port. The port_name is passed as an environment
variable to the children. */
if (OMPI_SUCCESS != (rc = ompi_dpm_open_port (port_name))) {
goto error;
}
} else if (1 < ompi_comm_size(comm)) {
/* we do not support non_mpi spawns on comms this size */
rc = OMPI_ERR_NOT_SUPPORTED;
goto error;
}
if (OMPI_SUCCESS != (rc = ompi_dpm_spawn (1, &command, &argv, &maxprocs,
&info, port_name))) {
goto error;
}
}
error:
if (OMPI_SUCCESS != rc) {
/* There was an error in one of the above stages,
* we still need to do the connect_accept stage so that
* non-root ranks do not deadlock.
* Add the error code to the port string for connect_accept
* to propagate the error code. */
(void)opal_asprintf(&port_string, "%s:error=%d", port_name, rc);
}
else {
port_string = port_name;
}
if (non_mpi) {
newcomp = MPI_COMM_NULL;
} else {
rc = ompi_dpm_connect_accept (comm, root, port_string, send_first, &newcomp);
}
if (OPAL_ERR_NOT_SUPPORTED == rc) {
opal_show_help("help-mpi-api.txt",
"MPI function not supported",
true,
FUNC_NAME,
"Underlying runtime environment does not support spawn functionality");
}
if(port_string != port_name) {
free(port_string);
}
/* close the port */
if (rank == root && !non_mpi) {
ompi_dpm_close_port(port_name);
}
/* set error codes */
if (MPI_ERRCODES_IGNORE != array_of_errcodes) {
for ( i=0; i < maxprocs; i++ ) {
array_of_errcodes[i]=rc;
}
}
*intercomm = newcomp;
OMPI_ERRHANDLER_RETURN (rc, comm, rc, FUNC_NAME);
}
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