9d4a26f47d
Notes:
- This commit also eliminates the need for an available components list in use
in several frameworks. None of the code in question was making use of the
priority field of the priority component list item so these extra lists were
removed.
- Cleaned up selection code in several frameworks to sort lists using opal_list_sort.
- Cleans up the ompi/orte-info functions. Expose the functions that construct the
list of params so they can be used elsewhere.
patches for mtl/portals4 from brian
missed a few output variables in openib
This commit was SVN r28241.
320 строки
12 KiB
C
320 строки
12 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) 2004-2005 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 Cisco Systems, Inc. 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/util/output.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/topo/topo.h"
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#include "ompi/mca/topo/base/base.h"
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#include "ompi/communicator/communicator.h"
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/*
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* Local functions
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*/
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static void fill_null_pointers(mca_topo_base_module_t *module);
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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_topo_base_component_t *om_component;
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mca_topo_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 topo module can be attached to each communicator.
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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 topo_base_open. This function is called on a
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* per-communicator 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 communicator
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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_topo_base_comm_select (struct ompi_communicator_t *comm,
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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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char name[MPI_MAX_OBJECT_NAME+32];
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opal_list_item_t *item;
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mca_base_component_list_item_t *cli;
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mca_topo_base_component_t *component;
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mca_topo_base_component_t *best_component;
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mca_topo_base_module_t *module;
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opal_list_t queried;
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queried_module_t *om;
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char *str;
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int err = MPI_SUCCESS;
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/* Announce */
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/* ANJU:
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* check for names array .... mca_base_var_ */
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snprintf(name, sizeof(name), "%s (cid %d)", comm->c_name,
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comm->c_contextid);
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name[sizeof(name) - 1] = '\0';
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opal_output_verbose(10, ompi_topo_base_framework.framework_output,
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"topo:base:comm_select: new communicator: %s",
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name);
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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, ompi_topo_base_framework.framework_output,
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"topo:base:comm_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_topo_base_component_t *)preferred;
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module = component->topom_comm_query (&priority);
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if (NULL != module &&
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NULL != module->topo_module_init &&
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NULL != module->topo_graph_map &&
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NULL != module->topo_cart_map) {
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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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* communicator 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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comm->c_topo = module;
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comm->c_topo_component = preferred;
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return module->topo_module_init(comm);
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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 communicator
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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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OPAL_LIST_FOREACH(cli, &ompi_topo_base_framework.framework_components, mca_base_component_list_item_t) {
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component = (mca_topo_base_component_t *) cli->cli_component;
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opal_output_verbose(10, ompi_topo_base_framework.framework_output,
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"select: initialising %s component %s",
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component->topom_version.mca_type_name,
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component->topom_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->topom_comm_query) {
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opal_output_verbose(10, ompi_topo_base_framework.framework_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->topom_comm_query (&priority);
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if (NULL == module ||
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NULL == module->topo_module_init ||
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NULL == module->topo_graph_map ||
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NULL == module->topo_cart_map) {
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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, ompi_topo_base_framework.framework_output,
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"select: query returned failure");
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} else {
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opal_output_verbose(10, ompi_topo_base_framework.framework_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->topom_init) */
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} /* end for ... end of traversal */
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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 comm_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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* JMS replace with show_help
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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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comm->c_topo = om->om_module;
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err = om->om_module->topo_module_init(comm);
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comm->c_topo_component = (mca_base_component_t *)best_component;
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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->topom_comm_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->topom_comm_unquery(comm);
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opal_output_verbose(10, ompi_topo_base_framework.framework_output,
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"select: component %s is not selected",
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om->om_component->topom_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, ompi_topo_base_framework.framework_output,
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"select: component %s selected",
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best_component->topom_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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/*
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* This function fills in the null function pointers, in other words,
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* those functions which are not implemented by the module with the
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* pointers from the base function. Somewhere, I need to incoroporate
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* a check for the common minimum funtions being implemented by the
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* module atleast. If not, this module cannot be considered.
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*/
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static void fill_null_pointers(mca_topo_base_module_t *module)
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{
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#define CHECK_FOR_NULL_FUNCTION_POINTER(name) \
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if (NULL == module->topo_##name) { \
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module->topo_##name = mca_topo_base_##name; \
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}
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CHECK_FOR_NULL_FUNCTION_POINTER(cart_coords);
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CHECK_FOR_NULL_FUNCTION_POINTER(cart_create);
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CHECK_FOR_NULL_FUNCTION_POINTER(cart_get);
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CHECK_FOR_NULL_FUNCTION_POINTER(cartdim_get);
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CHECK_FOR_NULL_FUNCTION_POINTER(cart_rank);
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CHECK_FOR_NULL_FUNCTION_POINTER(cart_shift);
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CHECK_FOR_NULL_FUNCTION_POINTER(cart_sub);
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CHECK_FOR_NULL_FUNCTION_POINTER(graph_create);
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CHECK_FOR_NULL_FUNCTION_POINTER(graph_get);
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CHECK_FOR_NULL_FUNCTION_POINTER(graphdims_get);
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CHECK_FOR_NULL_FUNCTION_POINTER(graph_neighbors);
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CHECK_FOR_NULL_FUNCTION_POINTER(graph_neighbors_count);
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#undef CHECK_FOR_NULL_FUNCTION_POINTER
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}
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