367 строки
12 KiB
C
367 строки
12 KiB
C
/*
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* Copyright (c) 2013 Mellanox Technologies, Inc.
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* 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 "oshmem_config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "oshmem/constants.h"
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#include "opal/class/opal_list.h"
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#include "oshmem/mca/mca.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/base/mca_base_component_repository.h"
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#include "oshmem/util/oshmem_util.h"
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#include "oshmem/mca/scoll/scoll.h"
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#include "oshmem/mca/scoll/base/base.h"
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#include "oshmem/proc/proc.h"
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#include "oshmem/runtime/runtime.h"
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/*
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* Local types
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*/
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struct avail_com_t {
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opal_list_item_t super;
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int ac_priority;
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mca_scoll_base_module_t *ac_module;
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};
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typedef struct avail_com_t avail_com_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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oshmem_group_t * group);
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static int check_one_component(oshmem_group_t * group,
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const mca_base_component_t * component,
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mca_scoll_base_module_1_0_0_t ** module);
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static int query(const mca_base_component_t * component,
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oshmem_group_t * group,
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int *priority,
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mca_scoll_base_module_1_0_0_t ** module);
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static int query_1_0_0(const mca_scoll_base_component_1_0_0_t * scoll_component,
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oshmem_group_t * group,
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int *priority,
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mca_scoll_base_module_1_0_0_t ** module);
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static int scoll_null_barrier(struct oshmem_group_t *group,
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long *pSync,
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int alg)
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{
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if (oshmem_proc_group_is_member(group)) {
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SCOLL_ERROR("internal error");
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oshmem_shmem_abort(-1);
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return OSHMEM_ERROR;
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}
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return OSHMEM_SUCCESS;
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}
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static int scoll_null_broadcast(struct oshmem_group_t *group,
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int PE_root,
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void *target,
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const void *source,
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size_t nlong,
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long *pSync,
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int alg)
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{
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if (oshmem_proc_group_is_member(group)) {
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SCOLL_ERROR("internal error");
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oshmem_shmem_abort(-1);
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return OSHMEM_ERROR;
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}
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return OSHMEM_SUCCESS;
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}
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static int scoll_null_collect(struct oshmem_group_t *group,
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void *target,
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const void *source,
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size_t nlong,
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long *pSync,
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bool nlong_type,
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int alg)
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{
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if (oshmem_proc_group_is_member(group)) {
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SCOLL_ERROR("internal error");
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oshmem_shmem_abort(-1);
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return OSHMEM_ERROR;
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}
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return OSHMEM_SUCCESS;
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}
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static int scoll_null_reduce(struct oshmem_group_t *group,
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struct oshmem_op_t *op,
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void *target,
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const void *source,
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size_t nlong,
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long *pSync,
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void *pWrk,
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int alg)
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{
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if (oshmem_proc_group_is_member(group)) {
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SCOLL_ERROR("internal error");
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oshmem_shmem_abort(-1);
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return OSHMEM_ERROR;
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}
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return OSHMEM_SUCCESS;
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}
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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_com_t, opal_list_item_t, NULL, NULL);
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#define COPY(module, group, func) \
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do { \
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if (NULL != module->scoll_ ## func) { \
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if (NULL != group->g_scoll.scoll_ ## func ## _module) { \
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OBJ_RELEASE(group->g_scoll.scoll_ ## func ## _module); \
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} \
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group->g_scoll.scoll_ ## func = module->scoll_ ## func; \
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group->g_scoll.scoll_ ## func ## _module = module; \
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OBJ_RETAIN(module); \
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} \
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} while (0)
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#define CLOSE(group, func) \
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do { \
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if (NULL != group->g_scoll.scoll_ ## func ## _module) { \
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OBJ_RELEASE(group->g_scoll.scoll_ ## func ## _module); \
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group->g_scoll.scoll_## func = NULL; \
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group->g_scoll.scoll_## func ## _module = NULL; \
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} \
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} while (0)
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int mca_scoll_base_group_unselect(struct oshmem_group_t * group)
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{
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/*
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* scoll close() is called before group destructors, so
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* do close group collectives if scoll modules are no longer
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* valid
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*
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* there is a memory leak here, because not doing close means
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* that we leaving object with dangling ref counts
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*/
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SCOLL_VERBOSE(10, "scoll:base:group_unselect: group: %d", group->id);
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CLOSE(group, barrier);
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CLOSE(group, broadcast);
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CLOSE(group, collect);
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CLOSE(group, reduce);
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/* All done */
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return OSHMEM_SUCCESS;
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}
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/*
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* This function is called at the initialization time of every
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* group. It is used to select which coll component will be
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* active for a given group.
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*/
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int mca_scoll_base_select(struct oshmem_group_t *group)
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{
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opal_list_t *selectable;
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opal_list_item_t *item;
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int ret;
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/* Announce */
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SCOLL_VERBOSE(10, "scoll:base:group_select: new group: %d", group->id);
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mca_scoll_base_group_unselect(group);
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memset(&group->g_scoll, 0, sizeof(mca_scoll_base_group_scoll_t));
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if (!oshmem_proc_group_is_member(group)) {
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group->g_scoll.scoll_barrier = scoll_null_barrier;
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group->g_scoll.scoll_broadcast = scoll_null_broadcast;
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group->g_scoll.scoll_collect = scoll_null_collect;
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group->g_scoll.scoll_reduce = scoll_null_reduce;
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return OSHMEM_SUCCESS;
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}
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SCOLL_VERBOSE(10,
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"scoll:base:group_select: Checking all available modules");
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selectable = check_components(&oshmem_scoll_base_framework.framework_components, group);
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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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return OSHMEM_ERROR;
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}
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/* do the selection loop */
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for (item = opal_list_remove_first(selectable); NULL != item; item =
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opal_list_remove_first(selectable)) {
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avail_com_t *avail = (avail_com_t *) item;
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ret = avail->ac_module->scoll_module_enable(avail->ac_module, group);
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if (OSHMEM_SUCCESS != ret) {
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mca_scoll_base_group_unselect(group);
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} else {
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COPY(avail->ac_module, group, broadcast);
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COPY(avail->ac_module, group, collect);
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COPY(avail->ac_module, group, reduce);
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COPY(avail->ac_module, group, barrier);
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}
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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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if ((NULL == group->g_scoll.scoll_barrier)
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|| (NULL == group->g_scoll.scoll_broadcast)
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|| (NULL == group->g_scoll.scoll_collect)
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|| (NULL == group->g_scoll.scoll_reduce)) {
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mca_scoll_base_group_unselect(group);
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return OSHMEM_ERR_NOT_FOUND;
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}
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return OSHMEM_SUCCESS;
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}
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static int avail_coll_compare (opal_list_item_t **a,
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opal_list_item_t **b)
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{
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avail_com_t *acom = (avail_com_t *) *a;
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avail_com_t *bcom = (avail_com_t *) *b;
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if (acom->ac_priority > bcom->ac_priority) {
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return 1;
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} else if (acom->ac_priority < bcom->ac_priority) {
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return -1;
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}
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return 0;
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}
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/*
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* For each module in the list, 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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oshmem_group_t *group)
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{
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int priority;
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const mca_base_component_t *component;
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mca_base_component_list_item_t *cli;
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mca_scoll_base_module_1_0_0_t *module;
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opal_list_t *selectable;
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avail_com_t *avail;
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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 */
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OPAL_LIST_FOREACH(cli, &oshmem_scoll_base_framework.framework_components, mca_base_component_list_item_t) {
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component = cli->cli_component;
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priority = check_one_component(group, component, &module);
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if (priority >= 0) {
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/* We have a component that indicated that it wants to run
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by giving us a module */
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avail = OBJ_NEW(avail_com_t);
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avail->ac_priority = priority;
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avail->ac_module = module;
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opal_list_append(selectable, &avail->super);
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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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/* Put this list in priority order */
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opal_list_sort(selectable, avail_coll_compare);
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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(oshmem_group_t *group,
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const mca_base_component_t *component,
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mca_scoll_base_module_1_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, group, &priority, module);
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if (OSHMEM_SUCCESS == err) {
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priority = (priority < 100) ? priority : 100;
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SCOLL_VERBOSE(10,
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"scoll:base:group_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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SCOLL_VERBOSE(10,
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"scoll:base:group_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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oshmem_group_t *group,
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int *priority,
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mca_scoll_base_module_1_0_0_t **module)
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{
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*module = NULL;
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if (1 == 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_scoll_base_component_1_0_0_t *coll100 =
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(mca_scoll_base_component_1_0_0_t *) component;
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return query_1_0_0(coll100, group, priority, module);
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}
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/* Unknown coll API version -- return error */
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return OSHMEM_ERROR;
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}
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static int query_1_0_0(const mca_scoll_base_component_1_0_0_t *component,
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oshmem_group_t *group,
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int *priority,
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mca_scoll_base_module_1_0_0_t **module)
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{
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mca_scoll_base_module_1_0_0_t *ret;
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/* There's currently no need for conversion */
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ret = component->scoll_query(group, priority);
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if (NULL != ret) {
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*module = ret;
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return OSHMEM_SUCCESS;
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}
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return OSHMEM_ERROR;
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}
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