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/*
* Copyright (c) 2004-2008 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
* 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 Evergrid, Inc. All rights reserved.
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#ifdef HAVE_UNISTD_H
#include "unistd.h"
#endif
#include "opal/constants.h"
#include "opal/util/output.h"
#include "opal/mca/mca.h"
#include "opal/mca/base/base.h"
#include "opal/mca/base/mca_base_param.h"
#include "opal/mca/crs/crs.h"
#include "opal/mca/crs/base/base.h"
int opal_crs_base_select(void)
{
int ret, exit_status = OPAL_SUCCESS;
opal_crs_base_component_t *best_component = NULL;
opal_crs_base_module_t *best_module = NULL;
int int_value = 0;
/*
* Note: If we are a tool, then we will manually run the selection routine
* for the checkpointer. The tool will set the MCA parameter
* 'crs_base_do_not_select' before opal_init and then reset it after to
* disable the selection logic.
* This is useful for opal_restart because it reads the metadata file
* that indicates the checkpointer to be used after calling opal_init.
* Therefore it would need to select a specific module, but it doesn't
* know which one until later. It will set the MCA parameter 'crs'
* before calling this function.
*/
mca_base_param_reg_int_name("crs",
"base_do_not_select",
"Do not do the selection of the CRS component",
true, false,
false,
&int_value);
if( OPAL_INT_TO_BOOL(int_value) ) {
opal_output_verbose(10, opal_crs_base_output,
"crs:select: Not selecting at this time!");
return OPAL_SUCCESS;
}
/*
* Select the best component
*/
if( OPAL_SUCCESS != mca_base_select("crs", opal_crs_base_output,
&opal_crs_base_components_available,
(mca_base_module_t **) &best_module,
(mca_base_component_t **) &best_component) ) {
/* This will only happen if no component was selected */
exit_status = OPAL_ERROR;
goto cleanup;
}
/* Save the winner */
opal_crs_base_selected_component = *best_component;
opal_crs = *best_module;
/* Initialize the winner */
if (NULL != best_module) {
if (OPAL_SUCCESS != (ret = opal_crs.crs_init()) ) {
exit_status = ret;
goto cleanup;
}
}
cleanup:
return exit_status;
}
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