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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
* Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2007 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) 2012 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2013-2014 Intel, Inc. All rights reserved
* Copyright (c) 2015 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2020 Sandia National Laboratories. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <string.h>
#include "opal/class/opal_list.h"
#include "opal/util/output.h"
#include "opal/util/show_help.h"
#include "opal/runtime/opal_progress.h"
#include "ompi/mca/mca.h"
#include "opal/mca/base/base.h"
#include "opal/runtime/opal.h"
#include "opal/mca/pmix/pmix-internal.h"
#include "ompi/constants.h"
#include "ompi/mca/part/part.h"
#include "ompi/mca/part/base/base.h"
#include "ompi/proc/proc.h"
typedef struct opened_component_t {
opal_list_item_t super;
mca_part_base_component_t *om_component;
} opened_component_t;
static bool modex_reqd=false;
/**
* Function for selecting one component from all those that are
* available.
*
* Call the init function on all available components and get their
* priorities. Select the component with the highest priority. All
* other components will be closed and unloaded. The selected component
* will have all of its function pointers saved and returned to the
* caller.
*/
int mca_part_base_select(bool enable_progress_threads,
bool enable_mpi_threads)
{
int i, priority = 0, best_priority = 0, num_part = 0;
opal_list_item_t *item = NULL;
mca_base_component_list_item_t *cli = NULL;
mca_part_base_component_t *component = NULL, *best_component = NULL;
mca_part_base_module_t *module = NULL, *best_module = NULL;
opal_list_t opened;
opened_component_t *om = NULL;
bool found_part;
/* Traverse the list of available components; call their init
functions. */
best_priority = -1;
best_component = NULL;
module = NULL;
OBJ_CONSTRUCT(&opened, opal_list_t);
OPAL_LIST_FOREACH(cli, &ompi_part_base_framework.framework_components, mca_base_component_list_item_t) {
component = (mca_part_base_component_t *) cli->cli_component;
/* if there is an include list - item must be in the list to be included */
found_part = false;
for( i = 0; i < opal_pointer_array_get_size(&mca_part_base_part); i++) {
char * tmp_val = NULL;
tmp_val = (char *) opal_pointer_array_get_item(&mca_part_base_part, i);
if( NULL == tmp_val) {
continue;
}
if(0 == strncmp(component->partm_version.mca_component_name,
tmp_val, strlen(component->partm_version.mca_component_name)) ) {
found_part = true;
break;
}
}
if(!found_part && opal_pointer_array_get_size(&mca_part_base_part)) {
opal_output_verbose( 10, ompi_part_base_framework.framework_output,
"select: component %s not in the include list",
component->partm_version.mca_component_name );
continue;
}
/* if there is no init function - ignore it */
if (NULL == component->partm_init) {
opal_output_verbose( 10, ompi_part_base_framework.framework_output,
"select: no init function; ignoring component %s",
component->partm_version.mca_component_name );
continue;
}
/* this is a part that could be considered */
num_part++;
/* Init component to get its priority */
opal_output_verbose( 10, ompi_part_base_framework.framework_output,
"select: initializing %s component %s",
component->partm_version.mca_type_name,
component->partm_version.mca_component_name );
priority = best_priority;
module = component->partm_init(&priority, enable_progress_threads,
enable_mpi_threads);
if (NULL == module) {
opal_output_verbose( 10, ompi_part_base_framework.framework_output,
"select: init returned failure for component %s",
component->partm_version.mca_component_name );
continue;
}
opal_output_verbose( 10, ompi_part_base_framework.framework_output,
"select: init returned priority %d", priority );
if (priority > best_priority) {
best_priority = priority;
best_component = component;
best_module = module;
}
om = (opened_component_t*)malloc(sizeof(opened_component_t));
if (NULL == om) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
OBJ_CONSTRUCT(om, opal_list_item_t);
om->om_component = component;
opal_list_append(&opened, (opal_list_item_t*) om);
}
/* Finished querying all components. Check for the bozo case. */
if( NULL == best_component ) {
opal_show_help("help-mca-base.txt", "find-available:none found",
true, "part",
opal_process_info.nodename,
"part");
for( i = 0; i < opal_pointer_array_get_size(&mca_part_base_part); i++) {
char * tmp_val = NULL;
tmp_val = (char *) opal_pointer_array_get_item(&mca_part_base_part, i);
if( NULL == tmp_val) {
continue;
}
ompi_rte_abort(1, "PART %s cannot be selected", tmp_val);
}
if(0 == i) {
ompi_rte_abort(2, "No part component available. This shouldn't happen.");
}
}
opal_output_verbose( 10, ompi_part_base_framework.framework_output,
"selected %s best priority %d\n",
best_component->partm_version.mca_component_name, best_priority);
/* if more than one PART could be considered, then we still need the
* modex since we cannot know which one will be selected on all procs
*/
if (1 < num_part) {
modex_reqd = true;
}
/* Finalize all non-selected components */
for (item = opal_list_remove_first(&opened);
NULL != item;
item = opal_list_remove_first(&opened)) {
om = (opened_component_t *) item;
if (om->om_component != best_component
) {
/* Finalize */
if (NULL != om->om_component->partm_finalize) {
/* Blatantly ignore the return code (what would we do to
recover, anyway? This component is going away, so errors
don't matter anymore) */
om->om_component->partm_finalize();
opal_output_verbose(10, ompi_part_base_framework.framework_output,
"select: component %s not selected / finalized",
om->om_component->partm_version.mca_component_name);
}
}
OBJ_DESTRUCT( om );
free(om);
}
OBJ_DESTRUCT( &opened );
/* Save the winner */
mca_part_base_selected_component = *best_component;
mca_part = *best_module;
opal_output_verbose( 10, ompi_part_base_framework.framework_output,
"select: component %s selected",
mca_part_base_selected_component.partm_version.mca_component_name );
/* This base function closes, unloads, and removes from the
available list all unselected components. The available list will
contain only the selected component. */
mca_base_components_close(ompi_part_base_framework.framework_output,
&ompi_part_base_framework.framework_components,
(mca_base_component_t *) best_component);
/* register the winner's callback */
if( NULL != mca_part.part_progress ) {
opal_progress_register(mca_part.part_progress);
}
/* All done */
return OMPI_SUCCESS;
}
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