201 строка
7.8 KiB
C
201 строка
7.8 KiB
C
/*
|
|
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2006 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) 2007-2010 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2010-2011 Los Alamos National Security, LLC.
|
|
* All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "opal_config.h"
|
|
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif /* HAVE_STRING_H */
|
|
|
|
#include "opal/constants.h"
|
|
#include "opal/util/output.h"
|
|
#include "opal/mca/mca.h"
|
|
#include "opal/mca/base/base.h"
|
|
#include "opal/mca/shmem/shmem.h"
|
|
#include "opal/mca/shmem/base/base.h"
|
|
|
|
/*
|
|
* globals
|
|
*/
|
|
bool opal_shmem_base_selected = false;
|
|
const opal_shmem_base_component_2_0_0_t *opal_shmem_base_component = NULL;
|
|
const opal_shmem_base_module_2_0_0_t *opal_shmem_base_module = NULL;
|
|
|
|
/* ////////////////////////////////////////////////////////////////////////// */
|
|
char *
|
|
opal_shmem_base_best_runnable_component_name(void)
|
|
{
|
|
mca_base_component_t *best_component = NULL;
|
|
mca_base_module_t *best_module = NULL;
|
|
|
|
opal_output_verbose(10, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: best_runnable_component_name: "
|
|
"Searching for best runnable component.");
|
|
/* select the best component so we can get its name. */
|
|
if (OPAL_SUCCESS != opal_shmem_base_runtime_query(&best_module,
|
|
&best_component)) {
|
|
/* fail! */
|
|
return NULL;
|
|
}
|
|
else {
|
|
if (NULL != best_component) {
|
|
opal_output_verbose(10, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: best_runnable_component_name: "
|
|
"Found best runnable component: (%s).",
|
|
best_component->mca_component_name);
|
|
return strdup(best_component->mca_component_name);
|
|
}
|
|
else {
|
|
opal_output_verbose(10, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: best_runnable_component_name: "
|
|
"Could not find runnable component.");
|
|
/* no component returned, so return NULL */
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* ////////////////////////////////////////////////////////////////////////// */
|
|
int
|
|
opal_shmem_base_runtime_query(mca_base_module_t **best_module,
|
|
mca_base_component_t **best_component)
|
|
{
|
|
mca_base_component_list_item_t *cli = NULL;
|
|
mca_base_component_t *component = NULL;
|
|
mca_base_module_t *module = NULL;
|
|
int priority = 0, best_priority = INT32_MIN;
|
|
|
|
*best_module = NULL;
|
|
*best_component = NULL;
|
|
|
|
opal_output_verbose(10, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: runtime_query: "
|
|
"Auto-selecting shmem components");
|
|
|
|
/* traverse the list of available components.
|
|
* for each call their 'run-time query' functions to determine relative
|
|
* priority.
|
|
*/
|
|
OPAL_LIST_FOREACH(cli, &opal_shmem_base_framework.framework_components, mca_base_component_list_item_t) {
|
|
component = (mca_base_component_t *)cli->cli_component;
|
|
|
|
/* if there is a run-time query function then use it. otherwise, skip
|
|
* the component.
|
|
*/
|
|
if (NULL == ((opal_shmem_base_component_2_0_0_t *)
|
|
component)->runtime_query) {
|
|
opal_output_verbose(5, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: runtime_query: "
|
|
"(shmem) Skipping component [%s]. It does not "
|
|
"implement a run-time query function",
|
|
component->mca_component_name);
|
|
continue;
|
|
}
|
|
|
|
/* query this component for the module and priority */
|
|
opal_output_verbose(5, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: runtime_query: "
|
|
"(shmem) Querying component (run-time) [%s]",
|
|
component->mca_component_name);
|
|
|
|
((opal_shmem_base_component_2_0_0_t *)
|
|
component)->runtime_query(&module, &priority, opal_shmem_base_RUNTIME_QUERY_hint);
|
|
|
|
/* if no module was returned, then skip component.
|
|
* this probably means that the run-time test deemed the shared memory
|
|
* backing facility unusable or unsafe.
|
|
*/
|
|
if (NULL == module) {
|
|
opal_output_verbose(5, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: runtime_query: "
|
|
"(shmem) Skipping component [%s]. Run-time "
|
|
"Query failed to return a module",
|
|
component->mca_component_name);
|
|
continue;
|
|
}
|
|
|
|
/* determine if this is the best module we have seen by looking the
|
|
* priority
|
|
*/
|
|
opal_output_verbose(5, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: runtime_query: "
|
|
"(%5s) Query of component [%s] set priority to %d",
|
|
"shmem", component->mca_component_name, priority);
|
|
if (priority > best_priority) {
|
|
best_priority = priority;
|
|
*best_module = module;
|
|
*best_component = component;
|
|
}
|
|
}
|
|
|
|
/* finished querying all components.
|
|
* make sure we found something in the process.
|
|
*/
|
|
if (NULL == *best_component) {
|
|
opal_output_verbose(5, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: runtime_query: "
|
|
"(%5s) No component selected!", "shmem");
|
|
return OPAL_ERR_NOT_FOUND;
|
|
}
|
|
|
|
opal_output_verbose(5, opal_shmem_base_framework.framework_output,
|
|
"shmem: base: runtime_query: "
|
|
"(%5s) Selected component [%s]", "shmem",
|
|
(*best_component)->mca_component_name);
|
|
|
|
/* close the non-selected components */
|
|
(void) mca_base_framework_components_close (&opal_shmem_base_framework,
|
|
(mca_base_component_t *)(*best_component));
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
/* ////////////////////////////////////////////////////////////////////////// */
|
|
int
|
|
opal_shmem_base_select(void)
|
|
{
|
|
opal_shmem_base_component_2_0_0_t *best_component = NULL;
|
|
opal_shmem_base_module_2_0_0_t *best_module = NULL;
|
|
/* select the best component */
|
|
if (OPAL_SUCCESS != opal_shmem_base_runtime_query(
|
|
(mca_base_module_t **)&best_module,
|
|
(mca_base_component_t **)&best_component)) {
|
|
/* it is NOT okay if we don't find a module because we need at
|
|
* least one shared memory backing facility component instance.
|
|
*/
|
|
return OPAL_ERROR;
|
|
}
|
|
|
|
/* save the winner */
|
|
opal_shmem_base_component = best_component;
|
|
opal_shmem_base_module = best_module;
|
|
opal_shmem_base_selected = true;
|
|
|
|
/* initialize the winner */
|
|
if (NULL != opal_shmem_base_module) {
|
|
return opal_shmem_base_module->module_init();
|
|
}
|
|
else {
|
|
return OPAL_ERROR;
|
|
}
|
|
}
|
|
|