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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2017 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 (c) 2008-2014 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2012 Los Alamos National Security, LLC.
* All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2019 Intel, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mpi.h"
#include "opal/util/show_help.h"
#include "ompi/constants.h"
#include "opal/class/opal_list.h"
#include "opal/util/output.h"
#include "ompi/mca/mca.h"
#include "opal/mca/base/base.h"
#include "opal/mca/base/mca_base_component_repository.h"
#include "ompi/runtime/ompi_rte.h"
#include "ompi/mca/coll/coll.h"
#include "ompi/mca/coll/base/base.h"
/*
* Private functions
*/
static int init_query(const mca_base_component_t * ls,
bool enable_progress_threads,
bool enable_mpi_threads);
/*
* Scan down the list of successfully opened components and query each of
* them (the opened list will be one or more components. If the user
* requested a specific component, it will be the only component in the
* opened list). Create and populate the available list of all
* components who indicate that they want to be considered for selection.
* Close all components who do not want to be considered for selection,
* and destroy the opened list.
*
* Also find the basic component while we're doing all of this, and save
* it in a global variable so that we can find it easily later (e.g.,
* during scope selection).
*/
int mca_coll_base_find_available(bool enable_progress_threads,
bool enable_mpi_threads)
{
mca_base_component_list_item_t *cli, *next;
const mca_base_component_t *component;
/* The list of components that we should check has already been
established in mca_coll_base_open. */
OPAL_LIST_FOREACH_SAFE(cli, next, &ompi_coll_base_framework.framework_components, mca_base_component_list_item_t) {
component = cli->cli_component;
/* Call a subroutine to do the work, because the component may
represent different versions of the coll MCA. */
if (OMPI_SUCCESS != init_query(component, enable_progress_threads,
enable_mpi_threads)) {
/* If the component doesn't want to run, then close it.
Now close it out and release it from the DSO repository (if it's there). */
opal_list_remove_item(&ompi_coll_base_framework.framework_components, &cli->super);
mca_base_component_close(component, ompi_coll_base_framework.framework_output);
OBJ_RELEASE(cli);
}
}
/* If we have no collective components available, it's an error.
Thanks for playing! */
if (opal_list_get_size(&ompi_coll_base_framework.framework_components) == 0) {
opal_output_verbose(10, ompi_coll_base_framework.framework_output,
"coll:find_available: no coll components available!");
opal_show_help("help-mca-base.txt", "find-available:not-valid", true,
"coll");
return OMPI_ERROR;
}
/* All done */
return OMPI_SUCCESS;
}
/*
* Query a specific component, coll v2.4.0
*/
static inline int
init_query_2_4_0(const mca_base_component_t * component,
bool enable_progress_threads,
bool enable_mpi_threads)
{
mca_coll_base_component_2_4_0_t *coll =
(mca_coll_base_component_2_4_0_t *) component;
return coll->collm_init_query(enable_progress_threads,
enable_mpi_threads);
}
/*
* Query a component, see if it wants to run at all. If it does, save
* some information. If it doesn't, close it.
*/
static int init_query(const mca_base_component_t * component,
bool enable_progress_threads, bool enable_mpi_threads)
{
int ret;
opal_output_verbose(10, ompi_coll_base_framework.framework_output,
"coll:find_available: querying coll component %s",
component->mca_component_name);
/* This component has already been successfully opened. So now
query it. */
if (2 == component->mca_type_major_version &&
4 == component->mca_type_minor_version &&
0 == component->mca_type_release_version) {
ret = init_query_2_4_0(component, enable_progress_threads,
enable_mpi_threads);
} else {
/* Unrecognized coll API version */
opal_output_verbose(10, ompi_coll_base_framework.framework_output,
"coll:find_available: unrecognized coll API version (%d.%d.%d, ignored)",
component->mca_type_major_version,
component->mca_type_minor_version,
component->mca_type_release_version);
return OMPI_ERROR;
}
/* Query done -- look at the return value to see what happened */
opal_output_verbose(10, ompi_coll_base_framework.framework_output,
"coll:find_available: coll component %s is %savailable",
component->mca_component_name,
(OMPI_SUCCESS == ret) ? "": "not ");
return ret;
}
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