c15cd5e4ab
unselected PLS. This decrease the footprint of all Open MPI based processes. This commit was SVN r14322.
139 строки
4.9 KiB
C
139 строки
4.9 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2007 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* 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 "orte_config.h"
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#include "orte/orte_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 "opal/mca/mca.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/base/mca_base_component_repository.h"
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#include "orte/util/proc_info.h"
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#include "orte/mca/errmgr/errmgr.h"
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#include "orte/mca/pls/base/pls_private.h"
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#include "orte/mca/pls/base/base.h"
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/**
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* Function for selecting one component from all those that are
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* available.
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*/
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int orte_pls_base_select(void)
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{
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opal_list_item_t *item;
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mca_base_component_list_item_t *cli;
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orte_pls_base_component_t *component, *best_component = NULL;
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orte_pls_base_module_t *module, *best_module = NULL;
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int priority, best_priority = -1;
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int rc;
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/* Query all the opened components and see if they want to run */
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for (item = opal_list_get_first(&orte_pls_base.available_components);
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opal_list_get_end(&orte_pls_base.available_components) != item;
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item = opal_list_get_next(item)) {
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cli = (mca_base_component_list_item_t *) item;
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component = (orte_pls_base_component_t *) cli->cli_component;
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opal_output_verbose(10, orte_pls_base.pls_output,
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"orte:base:select: querying component %s",
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component->pls_version.mca_component_name);
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/* Call the component's init function and see if it wants to be
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selected */
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module = component->pls_init(&priority);
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/* If we got a non-NULL module back, then the component wants
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to be considered for selection */
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if (NULL != module) {
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/* If this is the best one, save it */
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if (priority > best_priority) {
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/* If there was a previous best one, finalize */
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if (NULL != best_module) {
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best_module->finalize();
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}
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/* Save the new best one */
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best_module = module;
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best_component = component;
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/* update the best priority */
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best_priority = priority;
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} else {
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opal_output_verbose(10, orte_pls_base.pls_output,
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"orte:base:select: component %s does did not win the election",
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component->pls_version.mca_component_name);
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if (NULL == module->finalize) {
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opal_output(orte_pls_base.pls_output,
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"It appears you are the victim of a stale library - please delete your installation lib directory and reinstall");
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} else {
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module->finalize();
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}
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}
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}
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}
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/* If we didn't find one to select, barf */
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if (NULL == best_component) {
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return ORTE_ERROR;
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}
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/* We have happiness -- save the component and module for later
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usage */
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orte_pls = *best_module;
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orte_pls_base.selected_component = *best_component;
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orte_pls_base.selected = true;
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/* unload all components that were not selected */
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item = opal_list_get_first(&orte_pls_base.available_components);
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while(item != opal_list_get_end(&orte_pls_base.available_components)) {
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opal_list_item_t* next = opal_list_get_next(item);
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orte_pls_base_component_t* component;
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cli = (mca_base_component_list_item_t *) item;
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component = (orte_pls_base_component_t *) cli->cli_component;
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if(component != best_component) {
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opal_output_verbose(10, orte_pls_base.pls_output,
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"orte_pls_base_select: module %s unloaded",
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component->pls_version.mca_component_name);
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mca_base_component_repository_release((mca_base_component_t *) component);
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opal_list_remove_item(&orte_pls_base.available_components, item);
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OBJ_RELEASE(item);
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}
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item = next;
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}
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/* if we are an HNP, then start our receive */
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if (orte_process_info.seed) {
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if (ORTE_SUCCESS != (rc = orte_pls_base_comm_start())) {
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ORTE_ERROR_LOG(rc);
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return rc;
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}
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}
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return ORTE_SUCCESS;
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}
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