cf377db823
Features: - Support for an override parameter file (openmpi-mca-param-override.conf). Variable values in this file can not be overridden by any file or environment value. - Support for boolean, unsigned, and unsigned long long variables. - Support for true/false values. - Support for enumerations on integer variables. - Support for MPIT scope, verbosity, and binding. - Support for command line source. - Support for setting variable source via the environment using OMPI_MCA_SOURCE_<var name>=source (either command or file:filename) - Cleaner API. - Support for variable groups (equivalent to MPIT categories). Notes: - Variables must be created with a backing store (char **, int *, or bool *) that must live at least as long as the variable. - Creating a variable with the MCA_BASE_VAR_FLAG_SETTABLE enables the use of mca_base_var_set_value() to change the value. - String values are duplicated when the variable is registered. It is up to the caller to free the original value if necessary. The new value will be freed by the mca_base_var system and must not be freed by the user. - Variables with constant scope may not be settable. - Variable groups (and all associated variables) are deregistered when the component is closed or the component repository item is freed. This prevents a segmentation fault from accessing a variable after its component is unloaded. - After some discussion we decided we should remove the automatic registration of component priority variables. Few component actually made use of this feature. - The enumerator interface was updated to be general enough to handle future uses of the interface. - The code to generate ompi_info output has been moved into the MCA variable system. See mca_base_var_dump(). opal: update core and components to mca_base_var system orte: update core and components to mca_base_var system ompi: update core and components to mca_base_var system This commit also modifies the rmaps framework. The following variables were moved from ppr and lama: rmaps_base_pernode, rmaps_base_n_pernode, rmaps_base_n_persocket. Both lama and ppr create synonyms for these variables. This commit was SVN r28236.
391 строка
15 KiB
C
391 строка
15 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) 2004-2011 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 (c) 2008-2011 University of Houston. 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 "ompi_config.h"
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#include <string.h>
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#include "opal/class/opal_list.h"
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#include "opal/util/argv.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 "ompi/mca/fcoll/fcoll.h"
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#include "ompi/mca/fcoll/base/base.h"
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#include "ompi/mca/io/ompio/io_ompio.h"
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/*
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* This structure is needed so that we can close the modules
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* which are not selected but were opened. mca_base_modules_close
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* which does this job for us requires a opal_list_t which contains
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* these modules
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*/
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struct queried_module_t {
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opal_list_item_t super;
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mca_fcoll_base_component_t *om_component;
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mca_fcoll_base_module_t *om_module;
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};
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typedef struct queried_module_t queried_module_t;
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static OBJ_CLASS_INSTANCE(queried_module_t, opal_list_item_t, NULL, NULL);
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/*
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* Only one fcoll module can be attached to each file.
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*
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* This module calls the query funtion on all the components that were
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* detected by fcoll_base_open. This function is called on a
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* per-file basis. This function has the following function.
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*
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* 1. Iterate over the list of available_components
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* 2. Call the query function on each of these components.
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* 3. query function returns the structure containing pointers
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* to its module and its priority
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* 4. Select the module with the highest priority
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* 5. Call the init function on the selected module so that it does the
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* right setup for the file
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* 6. Call finalize on all the other modules which returned
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* their module but were unfortunate to not get selected
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*/
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int mca_fcoll_base_file_select (struct mca_io_ompio_file_t *file,
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mca_base_component_t *preferred)
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{
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int priority;
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int best_priority;
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opal_list_item_t *item;
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opal_list_item_t *next_item;
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char **name_array;
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int num_names;
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mca_base_component_priority_list_item_t *cpli;
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mca_fcoll_base_component_t *component;
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mca_fcoll_base_component_t *best_component;
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mca_fcoll_base_module_t *module;
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opal_list_t queried;
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queried_module_t *om;
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opal_list_t *selectable;
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char *str;
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int err = MPI_SUCCESS;
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int i;
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bool was_selectable_constructed = false;
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const char **names_value, *names;
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/* Check and see if a preferred component was provided. If it was
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provided then it should be used (if possible) */
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if (NULL != preferred) {
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/* We have a preferred component. Check if it is available
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and if so, whether it wants to run */
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str = &(preferred->mca_component_name[0]);
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opal_output_verbose(10, mca_fcoll_base_output,
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"fcoll:base:file_select: Checking preferred component: %s",
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str);
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/* query the component for its priority and get its module
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structure. This is necessary to proceed */
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component = (mca_fcoll_base_component_t *)preferred;
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module = component->fcollm_file_query (file, &priority);
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if (NULL != module &&
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NULL != module->fcoll_module_init) {
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/* this query seems to have returned something legitimate
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* and we can now go ahead and initialize the
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* file with it * but first, the functions which
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* are null need to be filled in */
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/*fill_null_pointers (module);*/
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file->f_fcoll = module;
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file->f_fcoll_component = preferred;
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return module->fcoll_module_init(file);
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}
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/* His preferred component is present, but is unable to
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* run. This is not a good sign. We should try selecting
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* some other component We let it fall through and select
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* from the list of available components
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*/
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} /*end of selection for preferred component */
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/*
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* We fall till here if one of the two things happened:
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* 1. The preferred component was provided but for some reason was
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* not able to be selected
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* 2. No preferred component was provided
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*
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* All we need to do is to go through the list of available
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* components and find the one which has the highest priority and
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* use that for this file
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*/
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/* Check if anything was requested by means on the name parameters */
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names_value = NULL;
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mca_base_var_get_value (mca_fcoll_base_param, &names_value, NULL, NULL);
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names = names_value ? names_value[0] : NULL;
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if (NULL != names && 0 < strlen(names)) {
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name_array = opal_argv_split (names, ',');
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num_names = opal_argv_count (name_array);
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opal_output_verbose(10, mca_fcoll_base_output,
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"fcoll:base:file_Select: Checking all available module");
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/* since there are somethings which the mca requested through the
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if the intersection is NULL, then we barf saying that the requested
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modules are not being available */
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selectable = OBJ_NEW(opal_list_t);
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was_selectable_constructed = true;
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/* go through the compoents_available list and check against the names
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* to see whether this can be added or not */
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for (item = opal_list_get_first(&mca_fcoll_base_components_available);
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item != opal_list_get_end(&mca_fcoll_base_components_available);
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item = opal_list_get_next(item)) {
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/* convert the opal_list_item_t returned into the proper type */
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cpli = (mca_base_component_priority_list_item_t *) item;
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component = (mca_fcoll_base_component_t *) cpli->super.cli_component;
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opal_output_verbose(10, mca_fcoll_base_output,
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"select: initialising %s component %s",
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component->fcollm_version.mca_type_name,
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component->fcollm_version.mca_component_name);
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/* check if this name is present in the mca_base_var */
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for (i=0; i < num_names; i++) {
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if (0 == strcmp(name_array[i], component->fcollm_version.mca_component_name)) {
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/* this is present, and should be added o the selectable list */
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/* We need to create a seperate object to initialise this list with
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* since we cannot have the same item in 2 lists */
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module = component->fcollm_file_query (file, &priority);
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if (NULL != module &&
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NULL != module->fcoll_module_init) {
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file->f_fcoll = module;
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file->f_fcoll_component = (mca_base_component_t *)component;
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return module->fcoll_module_init(file);
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}
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/*
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selectable_item = OBJ_NEW (mca_base_component_priority_list_item_t);
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*selectable_item = *cpli;
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opal_list_append (selectable, (opal_list_item_t *)selectable_item);
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break;*/
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}
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}
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}
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/* check for a NULL intersection between the available list and the
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* list which was asked for */
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if (0 == opal_list_get_size(selectable)) {
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was_selectable_constructed = true;
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OBJ_RELEASE (selectable);
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opal_output_verbose (10, mca_fcoll_base_output,
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"fcoll:base:file_select: preferred modules were not available");
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return OMPI_ERROR;
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}
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} else { /* if there was no name_array, then we need to simply initialize
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selectable to mca_fcoll_base_components_available */
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selectable = &mca_fcoll_base_components_available;
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}
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best_component = NULL;
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best_priority = -1;
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OBJ_CONSTRUCT(&queried, opal_list_t);
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for (item = opal_list_get_first(selectable);
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item != opal_list_get_end(selectable);
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item = opal_list_get_next(item)) {
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/*
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* convert the opal_list_item_t returned into the proper type
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*/
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cpli = (mca_base_component_priority_list_item_t *) item;
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component = (mca_fcoll_base_component_t *) cpli->super.cli_component;
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opal_output_verbose(10, mca_fcoll_base_output,
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"select: initialising %s component %s",
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component->fcollm_version.mca_type_name,
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component->fcollm_version.mca_component_name);
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/*
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* we can call the query function only if there is a function :-)
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*/
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if (NULL == component->fcollm_file_query) {
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opal_output_verbose(10, mca_fcoll_base_output,
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"select: no query, ignoring the component");
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} else {
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/*
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* call the query function and see what it returns
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*/
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module = component->fcollm_file_query (file, &priority);
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if (NULL == module ||
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NULL == module->fcoll_module_init) {
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/*
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* query did not return any action which can be used
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*/
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opal_output_verbose(10, mca_fcoll_base_output,
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"select: query returned failure");
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} else {
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opal_output_verbose(10, mca_fcoll_base_output,
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"select: query returned priority %d",
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priority);
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/*
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* is this the best component we have found till now?
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*/
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if (priority > best_priority) {
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best_priority = priority;
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best_component = component;
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}
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om = OBJ_NEW(queried_module_t);
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/*
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* check if we have run out of space
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*/
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if (NULL == om) {
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OBJ_DESTRUCT(&queried);
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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om->om_component = component;
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om->om_module = module;
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opal_list_append(&queried, (opal_list_item_t *)om);
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} /* end else of if (NULL == module) */
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} /* end else of if (NULL == component->fcollm_init) */
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} /* end for ... end of traversal */
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/* We have to remove empty out the selectable list if the selectable
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* list was constructed as a duplicate and not as a pointer to the
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* mca_base_components_available list. So, check and destroy */
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if (was_selectable_constructed) {
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/* remove all the items first */
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for (item = opal_list_get_first(&mca_fcoll_base_components_available);
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item != opal_list_get_end(&mca_fcoll_base_components_available);
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item = next_item) {
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next_item = opal_list_get_next(item);
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OBJ_RELEASE (item);
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}
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/* release the list itself */
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OBJ_RELEASE (selectable);
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was_selectable_constructed = false;
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}
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/*
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* Now we have alist of components which successfully returned
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* their module struct. One of these components has the best
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* priority. The rest have to be comm_unqueried to counter the
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* effects of file_query'ing them. Finalize happens only on
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* components which should are initialized.
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*/
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if (NULL == best_component) {
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/*
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* This typically means that there was no component which was
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* able to run properly this time. So, we need to abort
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*/
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OBJ_DESTRUCT(&queried);
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return OMPI_ERROR;
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}
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/*
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* We now have a list of components which have successfully
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* returned their priorities from the query. We now have to
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* unquery() those components which have not been selected and
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* init() the component which was selected
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*/
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for (item = opal_list_remove_first(&queried);
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NULL != item;
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item = opal_list_remove_first(&queried)) {
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om = (queried_module_t *) item;
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if (om->om_component == best_component) {
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/*
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* this is the chosen component, we have to initialise the
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* module of this component.
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*
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* ANJU: a component might not have all the functions
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* defined. Whereever a function pointer is null in the
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* module structure we need to fill it in with the base
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* structure function pointers. This is yet to be done
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*/
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/*
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* We don return here coz we still need to go through and
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* elease the other objects
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*/
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/*fill_null_pointers (om->om_module);*/
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file->f_fcoll = om->om_module;
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err = om->om_module->fcoll_module_init(file);
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file->f_fcoll_component = (mca_base_component_t *)best_component;
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/*
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printf ("SELECTED: %s\n", best_component->fcollm_version.mca_component_name);
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*/
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} else {
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/*
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* this is not the "choosen one", finalize
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*/
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if (NULL != om->om_component->fcollm_file_unquery) {
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/* unquery the component only if they have some clean
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* up job to do. Components which are queried but do
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* not actually do anything typically do not have a
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* unquery. Hence this check is necessary
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*/
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(void) om->om_component->fcollm_file_unquery(file);
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opal_output_verbose(10, mca_fcoll_base_output,
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"select: component %s is not selected",
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om->om_component->fcollm_version.mca_component_name);
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} /* end if */
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} /* if not best component */
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OBJ_RELEASE(om);
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} /* traversing through the entire list */
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opal_output_verbose(10, mca_fcoll_base_output,
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"select: component %s selected",
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best_component->fcollm_version.mca_component_name);
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OBJ_DESTRUCT(&queried);
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return err;
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}
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int mca_fcoll_base_query_table (struct mca_io_ompio_file_t *file, char *name)
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{
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if (!strcmp (name, "individual")) {
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if ((int)file->f_cc_size >= file->f_bytes_per_agg &&
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file->f_cc_size >= file->f_stripe_size) {
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return 1;
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}
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}
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if (!strcmp (name, "dynamic")) {
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if ((int)file->f_cc_size < file->f_bytes_per_agg &&
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file->f_cc_size >= file->f_stripe_size) {
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return 1;
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}
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}
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if (!strcmp (name, "two_phase")) {
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if ((int)file->f_cc_size < file->f_bytes_per_agg &&
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file->f_cc_size < file->f_stripe_size) {
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return 1;
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}
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}
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return 0;
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}
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