233 строки
7.7 KiB
C
233 строки
7.7 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mpi.h"
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#include "ompi/include/constants.h"
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#include "opal/class/opal_list.h"
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#include "opal/util/output.h"
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#include "opal/util/show_help.h"
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#include "mca/mca.h"
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#include "mca/base/base.h"
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#include "mca/coll/coll.h"
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#include "mca/coll/base/base.h"
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/*
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* Global variables
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*/
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bool mca_coll_base_components_available_valid = false;
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opal_list_t mca_coll_base_components_available;
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const mca_coll_base_component_1_0_0_t *mca_coll_base_basic_component = NULL;
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/*
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* Private functions
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*/
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static int init_query(const mca_base_component_t *ls,
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mca_base_component_priority_list_item_t *entry,
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bool enable_progress_threads,
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bool enable_mpi_threads);
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static int init_query_1_0_0(const mca_base_component_t *ls,
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mca_base_component_priority_list_item_t *entry,
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bool enable_progress_threads,
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bool enable_mpi_threads);
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/*
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* Scan down the list of successfully opened components and query each of
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* them (the opened list will be one or more components. If the user
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* requested a specific component, it will be the only component in the
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* opened list). Create and populate the available list of all
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* components who indicate that they want to be considered for selection.
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* Close all components who do not want to be considered for selection,
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* and destroy the opened list.
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*
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* Also find the basic component while we're doing all of this, and save
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* it in a global variable so that we can find it easily later (e.g.,
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* during scope selection).
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*/
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int mca_coll_base_find_available(bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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bool found = false;
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mca_base_component_priority_list_item_t *entry;
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opal_list_item_t *p;
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const mca_base_component_t *component;
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/* Initialize the list */
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OBJ_CONSTRUCT(&mca_coll_base_components_available, opal_list_t);
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mca_coll_base_components_available_valid = true;
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/* The list of components that we should check has already been
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established in mca_coll_base_open. */
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for (found = false,
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p = opal_list_remove_first(&mca_coll_base_components_opened);
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p != NULL;
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p = opal_list_remove_first(&mca_coll_base_components_opened)) {
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component = ((mca_base_component_list_item_t *) p)->cli_component;
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/* Call a subroutine to do the work, because the component may
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represent different versions of the coll MCA. */
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entry = OBJ_NEW(mca_base_component_priority_list_item_t);
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entry->super.cli_component = component;
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entry->cpli_priority = 0;
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if (OMPI_SUCCESS == init_query(component, entry,
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enable_progress_threads,
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enable_mpi_threads)) {
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/* Is this the basic component? If so, save it, because it's
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special. Keep it off the available list -- we'll use it
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specially in the selection process. */
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if (0 == strcmp(component->mca_component_name, "basic")) {
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mca_coll_base_basic_component =
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(mca_coll_base_component_1_0_0_t *) component;
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OBJ_RELEASE(entry);
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}
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/* Otherwise, save the results in the list. The priority isn't
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relevant, because selection is decided at
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communicator-constructor time. But we save the thread
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arguments (set in the init_query() function) so that the
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initial selection algorithm can negotiate the overall thread
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level for this process. */
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else {
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opal_list_append(&mca_coll_base_components_available,
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(opal_list_item_t *) entry);
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}
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/* Either way, we found something :-) */
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found = true;
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} else {
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/* If the component doesn't want to run, then close it. It's
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already had its close() method invoked; now close it out of
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the DSO repository (if it's there). */
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mca_base_component_repository_release(component);
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OBJ_RELEASE(entry);
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}
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/* Free the entry from the "opened" list */
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OBJ_RELEASE(p);
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}
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/* The opened list is now no longer useful and we can free it */
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OBJ_DESTRUCT(&mca_coll_base_components_opened);
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mca_coll_base_components_opened_valid = false;
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/* If we have no collective components available, it's an error.
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Thanks for playing! */
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if (!found) {
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/* Need to free all items in the list */
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OBJ_DESTRUCT(&mca_coll_base_components_available);
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mca_coll_base_components_available_valid = false;
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opal_output_verbose(10, mca_coll_base_output,
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"coll:find_available: no coll components available!");
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opal_show_help("help-mca-base", "find-available:none-found", true,
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"coll");
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return OMPI_ERROR;
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}
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/* All done */
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return OMPI_SUCCESS;
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}
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/*
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* Query a component, see if it wants to run at all. If it does, save
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* some information. If it doesn't, close it.
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*/
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static int init_query(const mca_base_component_t *m,
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mca_base_component_priority_list_item_t *entry,
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bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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int ret;
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opal_output_verbose(10, mca_coll_base_output,
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"coll:find_available: querying coll component %s",
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m->mca_component_name);
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/* This component has already been successfully opened. So now query
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it. */
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if (1 == m->mca_type_major_version &&
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0 == m->mca_type_minor_version &&
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0 == m->mca_type_release_version) {
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ret = init_query_1_0_0(m, entry, enable_progress_threads,
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enable_mpi_threads);
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} else {
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/* Unrecognized coll API version */
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opal_output_verbose(10, mca_coll_base_output,
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"coll:find_available: unrecognized coll API version (%d.%d.%d, ignored)",
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m->mca_type_major_version,
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m->mca_type_minor_version,
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m->mca_type_release_version);
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return OMPI_ERROR;
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}
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/* Query done -- look at the return value to see what happened */
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if (OMPI_SUCCESS != ret) {
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opal_output_verbose(10, mca_coll_base_output,
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"coll:find_available: coll component %s is not available",
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m->mca_component_name);
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if (NULL != m->mca_close_component) {
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m->mca_close_component();
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}
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} else {
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opal_output_verbose(10, mca_coll_base_output,
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"coll:find_available: coll component %s is available",
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m->mca_component_name);
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}
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/* All done */
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return ret;
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}
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/*
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* Query a specific component, coll v1.0.0
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*/
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static int init_query_1_0_0(const mca_base_component_t *component,
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mca_base_component_priority_list_item_t *entry,
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bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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mca_coll_base_component_1_0_0_t *coll =
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(mca_coll_base_component_1_0_0_t *) component;
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return coll->collm_init_query(enable_progress_threads,
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enable_mpi_threads);
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}
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