382 строки
13 KiB
C
382 строки
13 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) 2007 Lawrence Livermore National Security, LLC. All
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* rights reserved.
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* Copyright (c) 2008 Sun Microsystems, Inc. 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 <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "mpi.h"
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#include "ompi/communicator/communicator.h"
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#include "opal/util/argv.h"
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#include "orte/util/show_help.h"
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#include "opal/class/opal_list.h"
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#include "opal/class/opal_object.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/coll/coll.h"
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#include "ompi/mca/coll/base/base.h"
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/*
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* Local types
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*/
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struct avail_coll_t {
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opal_list_item_t super;
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int ac_priority;
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mca_coll_base_module_2_0_0_t *ac_module;
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};
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typedef struct avail_coll_t avail_coll_t;
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/*
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* Local functions
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*/
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static opal_list_t *check_components(opal_list_t * components,
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ompi_communicator_t * comm,
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char **names, int num_names);
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static int check_one_component(ompi_communicator_t * comm,
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const mca_base_component_t * component,
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mca_coll_base_module_2_0_0_t ** module);
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static int query(const mca_base_component_t * component,
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ompi_communicator_t * comm, int *priority,
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mca_coll_base_module_2_0_0_t ** module);
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static int query_2_0_0(const mca_coll_base_component_2_0_0_t *
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coll_component, ompi_communicator_t * comm,
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int *priority,
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mca_coll_base_module_2_0_0_t ** module);
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/*
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* Stuff for the OBJ interface
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*/
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static OBJ_CLASS_INSTANCE(avail_coll_t, opal_list_item_t, NULL, NULL);
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#define COPY(module, comm, func) \
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do { \
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if (NULL != module->coll_ ## func) { \
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if (NULL != comm->c_coll.coll_ ## func ## _module) { \
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OBJ_RELEASE(comm->c_coll.coll_ ## func ## _module); \
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} \
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comm->c_coll.coll_ ## func = module->coll_ ## func; \
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comm->c_coll.coll_ ## func ## _module = module; \
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OBJ_RETAIN(module); \
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} \
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} while (0)
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/*
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* This function is called at the initialization time of every
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* communicator. It is used to select which coll component will be
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* active for a given communicator.
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*
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* This selection logic is not for the weak.
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*/
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int mca_coll_base_comm_select(ompi_communicator_t * comm)
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{
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int ret, num_names;
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char name[MPI_MAX_OBJECT_NAME + 32];
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char *names, **name_array;
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opal_list_t *selectable;
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opal_list_item_t *item;
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/* Announce */
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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, mca_coll_base_output,
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"coll:base:comm_select: new communicator: %s",
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name);
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/* Initialize all the relevant pointers, since they're used as
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* sentinel values */
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memset(&comm->c_coll, 0, sizeof(mca_coll_base_comm_coll_t));
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/* See if a set of component was requested by the MCA parameter.
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Don't check for error. */
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names = NULL;
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mca_base_param_lookup_string(mca_coll_base_param, &names);
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if (NULL != names && 0 < strlen(names)) {
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/* mca param based */
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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_coll_base_output,
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"coll:base:comm_select: Checking specific modules: %s",
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names);
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selectable = check_components(&mca_coll_base_components_available,
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comm, name_array, num_names);
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opal_argv_free(name_array);
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} else {
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/* no specific components given -- try all */
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opal_output_verbose(10, mca_coll_base_output,
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"coll:base:comm_select: Checking all available modules");
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selectable = check_components(&mca_coll_base_components_available,
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comm, NULL, 0);
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}
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/* Upon return from the above, the modules list will contain the
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list of modules that returned (priority >= 0). If we have no
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collective modules available, then print error and return. */
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if (NULL == selectable) {
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/* There's no modules available */
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orte_show_help("help-mca-coll-base",
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"comm-select:none-available", true);
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return OMPI_ERROR;
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}
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/* FIX ME - Do some kind of collective operation to find a module
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that everyone has available */
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/* do the selection loop */
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for (item = opal_list_remove_first(selectable);
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NULL != item; item = opal_list_remove_first(selectable)) {
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avail_coll_t *avail = (avail_coll_t *) item;
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/* initialize the module */
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ret = avail->ac_module->coll_module_enable(avail->ac_module, comm);
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if (OMPI_SUCCESS != ret) {
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mca_coll_base_comm_unselect(comm);
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continue;
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}
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/* copy over any of the pointers */
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COPY(avail->ac_module, comm, allgather);
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COPY(avail->ac_module, comm, allgatherv);
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COPY(avail->ac_module, comm, allreduce);
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COPY(avail->ac_module, comm, alltoall);
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COPY(avail->ac_module, comm, alltoallv);
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COPY(avail->ac_module, comm, alltoallw);
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COPY(avail->ac_module, comm, barrier);
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COPY(avail->ac_module, comm, bcast);
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COPY(avail->ac_module, comm, exscan);
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COPY(avail->ac_module, comm, gather);
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COPY(avail->ac_module, comm, gatherv);
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COPY(avail->ac_module, comm, reduce);
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COPY(avail->ac_module, comm, reduce_scatter);
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COPY(avail->ac_module, comm, scan);
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COPY(avail->ac_module, comm, scatter);
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COPY(avail->ac_module, comm, scatterv);
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/* release the original module reference and the list item */
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OBJ_RELEASE(avail->ac_module);
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OBJ_RELEASE(avail);
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}
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/* Done with the list from the check_components() call so release it. */
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OBJ_RELEASE(selectable);
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/* check to make sure no NULLs */
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if ((NULL == comm->c_coll.coll_allgather) ||
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(NULL == comm->c_coll.coll_allgatherv) ||
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(NULL == comm->c_coll.coll_allreduce) ||
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(NULL == comm->c_coll.coll_alltoall) ||
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(NULL == comm->c_coll.coll_alltoallv) ||
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(NULL == comm->c_coll.coll_alltoallw) ||
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(NULL == comm->c_coll.coll_barrier) ||
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(NULL == comm->c_coll.coll_bcast) ||
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((OMPI_COMM_IS_INTRA(comm)) && (NULL == comm->c_coll.coll_exscan))
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|| (NULL == comm->c_coll.coll_gather)
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|| (NULL == comm->c_coll.coll_gatherv)
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|| (NULL == comm->c_coll.coll_reduce)
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|| (NULL == comm->c_coll.coll_reduce_scatter)
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|| ((OMPI_COMM_IS_INTRA(comm)) && (NULL == comm->c_coll.coll_scan))
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|| (NULL == comm->c_coll.coll_scatter)
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|| (NULL == comm->c_coll.coll_scatterv)) {
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mca_coll_base_comm_unselect(comm);
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return OMPI_ERR_NOT_FOUND;
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}
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return OMPI_SUCCESS;
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}
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/*
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* For each module in the list, if it is in the list of names (or the
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* list of names is NULL), then check and see if it wants to run, and
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* do the resulting priority comparison. Make a list of modules to be
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* only those who returned that they want to run, and put them in
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* priority order.
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*/
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static opal_list_t *check_components(opal_list_t * components,
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ompi_communicator_t * comm,
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char **names, int num_names)
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{
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int i, priority;
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const mca_base_component_t *component;
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opal_list_item_t *item, *item2;
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mca_coll_base_module_2_0_0_t *module;
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bool want_to_check;
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opal_list_t *selectable;
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avail_coll_t *avail, *avail2;
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/* Make a list of the components that query successfully */
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selectable = OBJ_NEW(opal_list_t);
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/* Scan through the list of components. This nested loop is O(N^2),
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but we should never have too many components and/or names, so this
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*hopefully* shouldn't matter... */
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for (item = opal_list_get_first(components);
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item != opal_list_get_end(components);
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item = opal_list_get_next(item)) {
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component = ((mca_base_component_priority_list_item_t *)
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item)->super.cli_component;
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/* If we have a list of names, scan through it */
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if (0 == num_names) {
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want_to_check = true;
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} else {
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want_to_check = false;
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for (i = 0; i < num_names; ++i) {
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if (0 == strcmp(names[i], component->mca_component_name)) {
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want_to_check = true;
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}
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}
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}
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/* If we determined that we want to check this component, then do
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* so */
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if (want_to_check) {
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priority = check_one_component(comm, component, &module);
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if (priority >= 0) {
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/* We have a component that indicated that it wants to run by
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* giving us a module */
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avail = OBJ_NEW(avail_coll_t);
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avail->ac_priority = priority;
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avail->ac_module = module;
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/* Put this item on the list in priority order (lowest
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* priority first). Should it go first? */
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for (item2 = opal_list_get_first(selectable);
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item2 != opal_list_get_end(selectable);
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item2 = opal_list_get_next(item2)) {
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avail2 = (avail_coll_t *) item2;
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if (avail->ac_priority < avail2->ac_priority) {
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opal_list_insert_pos(selectable,
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item2,
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(opal_list_item_t *) avail);
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break;
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}
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}
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if (opal_list_get_end(selectable) == item2) {
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opal_list_append(selectable,
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(opal_list_item_t *) avail);
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}
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}
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}
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}
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/* If we didn't find any available components, return an error */
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if (0 == opal_list_get_size(selectable)) {
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OBJ_RELEASE(selectable);
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return NULL;
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}
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/* All done */
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return selectable;
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}
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/*
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* Check a single component
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*/
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static int check_one_component(ompi_communicator_t * comm,
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const mca_base_component_t * component,
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mca_coll_base_module_2_0_0_t ** module)
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{
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int err;
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int priority = -1;
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err = query(component, comm, &priority, module);
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if (OMPI_SUCCESS == err) {
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priority = (priority < 100) ? priority : 100;
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opal_output_verbose(10, mca_coll_base_output,
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"coll:base:comm_select: component available: %s, priority: %d",
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component->mca_component_name, priority);
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} else {
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priority = -1;
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opal_output_verbose(10, mca_coll_base_output,
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"coll:base:comm_select: component not available: %s",
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component->mca_component_name);
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}
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return priority;
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}
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/**************************************************************************
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* Query functions
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**************************************************************************/
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/*
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* Take any version of a coll module, query it, and return the right
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* module struct
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*/
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static int query(const mca_base_component_t * component,
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ompi_communicator_t * comm,
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int *priority, mca_coll_base_module_2_0_0_t ** module)
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{
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*module = NULL;
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if (2 == component->mca_type_major_version &&
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0 == component->mca_type_minor_version &&
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0 == component->mca_type_release_version) {
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const mca_coll_base_component_2_0_0_t *coll100 =
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(mca_coll_base_component_2_0_0_t *) component;
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return query_2_0_0(coll100, comm, priority, module);
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}
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/* Unknown coll API version -- return error */
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return OMPI_ERROR;
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}
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static int query_2_0_0(const mca_coll_base_component_2_0_0_t * component,
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ompi_communicator_t * comm, int *priority,
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mca_coll_base_module_2_0_0_t ** module)
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{
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mca_coll_base_module_2_0_0_t *ret;
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/* There's currently no need for conversion */
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ret = component->collm_comm_query(comm, priority);
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if (NULL != ret) {
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*module = ret;
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return OMPI_SUCCESS;
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}
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return OMPI_ERROR;
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}
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