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/*
* 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) 2012-2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2013-2020 Intel, Inc. All rights reserved.
* Copyright (c) 2015-2020 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2020-2022 Amazon.com, Inc. or its affiliates. All Rights
* Copyright (c) 2018-2020 Triad National Security, LLC. All rights
* Copyright (c) 2022 IBM Corporation. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <string.h>
#include "opal/mca/accelerator/accelerator.h"
#include "opal/mca/accelerator/base/base.h"
#include "opal/class/opal_list.h"
#include "opal/constants.h"
#include "opal/mca/base/base.h"
#include "opal/mca/mca.h"
#include "opal/util/output.h"
#include "opal/util/show_help.h"
#include "opal/util/proc.h"
typedef struct accelerator_list_item_t {
opal_list_item_t super;
opal_accelerator_base_component_t *accelerator_component;
opal_accelerator_base_module_t *accelerator_module;
} accelerator_list_item_t;
static void multiple_accelerators_found_help_message(opal_list_t *components);
int opal_accelerator_base_select(void)
{
mca_base_component_list_item_t *cli = NULL;
mca_base_component_t *skip = NULL;
opal_accelerator_base_component_t *component = NULL;
opal_accelerator_base_module_t *module = NULL;
accelerator_list_item_t *ali = NULL, *ali2 = NULL;
opal_list_t ordered_list, initialized_list;
opal_list_item_t *item = NULL;
OBJ_CONSTRUCT(&ordered_list, opal_list_t);
OBJ_CONSTRUCT(&initialized_list, opal_list_t);
/* Traverse the list of available components and create a new ordered list with
the NULL Component on the back of the new list */
OPAL_LIST_FOREACH(cli, &opal_accelerator_base_framework.framework_components, mca_base_component_list_item_t) {
ali = (accelerator_list_item_t*) malloc(sizeof(accelerator_list_item_t));
if (NULL == ali) {
return OPAL_ERR_OUT_OF_RESOURCE;
}
OBJ_CONSTRUCT(ali, opal_list_item_t);
ali->accelerator_component = (opal_accelerator_base_component_t *) cli->cli_component;
if (0 == strcmp(cli->cli_component->mca_component_name, "null")) {
opal_list_append(&ordered_list, (opal_list_item_t*) ali);
}
else {
opal_list_prepend(&ordered_list, (opal_list_item_t*) ali);
}
}
/* Traverse the ordered list of available components and try and initialize every component.
* Save all initialized components in initialized component list. */
OPAL_LIST_FOREACH(ali, &ordered_list, accelerator_list_item_t) {
component = ali->accelerator_component;
if (NULL == component->accelerator_init) {
opal_output_verbose(10, opal_accelerator_base_framework.framework_output,
"select: no init function; ignoring component %s",
component->base_version.mca_component_name);
continue;
}
opal_output_verbose(10, opal_accelerator_base_framework.framework_output,
"select: initializing %s component %s",
component->base_version.mca_type_name,
component->base_version.mca_component_name);
module = component->accelerator_init();
if (NULL != module) {
ali2 = (accelerator_list_item_t*) malloc(sizeof(accelerator_list_item_t));
if (NULL == ali2) {
return OPAL_ERR_OUT_OF_RESOURCE;
}
OBJ_CONSTRUCT(ali2, opal_list_item_t);
ali2->accelerator_component = ali->accelerator_component;
ali2->accelerator_module = module;
opal_list_append(&initialized_list, (opal_list_item_t*) ali2);
}
}
/* There are four possible cases to handle:
* 1. List empty, someone selected a component with --mca accelerator <component> and it fails to initialize
* 2. There is 1 component in the list (NULL will always initialize, or someone selected a component)
* 3. There are 2 components in the list (User Defined, and NULL)
* 4. There are 3+ components in the list (User Defined1, User Defined 2, ..., NULL)
*
* Case 1: Abort and show simple help message
* Case 2 & 3 can be handled the same way by selecting the first component in the list
* Case 4: Show help (with a string containing all initialized components) and abort
*/
if (0 == initialized_list.opal_list_length) {
opal_show_help("help-accelerator-base.txt", "No Accelerators Found", true);
/* leaks memory, but doesn't matter b/c ompi is aborting */
return OPAL_ERR_FATAL;
} else if (2 >= initialized_list.opal_list_length) {
ali = (accelerator_list_item_t *) opal_list_get_first(&initialized_list);
opal_accelerator_base_selected_component = *ali->accelerator_component;
skip = (mca_base_component_t *) ali->accelerator_component;
opal_accelerator = *ali->accelerator_module;
} else {
multiple_accelerators_found_help_message(&initialized_list);
/* leaks memory, but doesn't matter b/c ompi is aborting */
return OPAL_ERR_FATAL;
}
opal_output_verbose(10, opal_accelerator_base_framework.framework_output, "selected %s\n",
opal_accelerator_base_selected_component.base_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_framework_components_close(&opal_accelerator_base_framework, skip);
/* Cleanup Lists */
for (item = opal_list_remove_first(&ordered_list); NULL != item; item = opal_list_remove_first(&ordered_list)) {
OBJ_DESTRUCT(item);
free(item);
}
for (item = opal_list_remove_first(&initialized_list); NULL != item; item = opal_list_remove_first(&initialized_list)) {
OBJ_DESTRUCT(item);
free(item);
}
OBJ_DESTRUCT(&ordered_list);
OBJ_DESTRUCT(&initialized_list);
return OPAL_SUCCESS;
}
static void multiple_accelerators_found_help_message(opal_list_t *components)
{
accelerator_list_item_t *ali = NULL;
int i = 0;
int list_length = components->opal_list_length;
/* NULL Terminator + Do not include NULL component in list */
char* component_names = (char*) malloc(1 + ((list_length - 1) * MCA_BASE_MAX_COMPONENT_NAME_LEN));
component_names[0] = '\0';
OPAL_LIST_FOREACH(ali, components, accelerator_list_item_t) {
strcat(component_names, ali->accelerator_component->base_version.mca_component_name);
/* Do not include NULL component in list */
if (++i == list_length - 1) {
break;
}
strcat(component_names, ", ");
}
opal_show_help("help-accelerator-base.txt", "Multiple Accelerators Found", true, component_names);
free(component_names);
}
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