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/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2017 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2009 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2016 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2018-2019 Intel, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <stdio.h>
#include "coll_sync.h"
#include "mpi.h"
#include "opal/util/show_help.h"
#include "ompi/runtime/ompi_rte.h"
#include "ompi/constants.h"
#include "ompi/communicator/communicator.h"
#include "ompi/mca/coll/coll.h"
#include "ompi/mca/coll/base/base.h"
#include "coll_sync.h"
static void mca_coll_sync_module_construct(mca_coll_sync_module_t *module)
{
memset(&(module->c_coll), 0, sizeof(module->c_coll));
module->before_num_operations = 0;
module->after_num_operations = 0;
module->in_operation = false;
}
static void mca_coll_sync_module_destruct(mca_coll_sync_module_t *module)
{
OBJ_RELEASE(module->c_coll.coll_bcast_module);
OBJ_RELEASE(module->c_coll.coll_gather_module);
OBJ_RELEASE(module->c_coll.coll_gatherv_module);
OBJ_RELEASE(module->c_coll.coll_reduce_module);
OBJ_RELEASE(module->c_coll.coll_reduce_scatter_module);
OBJ_RELEASE(module->c_coll.coll_scatter_module);
OBJ_RELEASE(module->c_coll.coll_scatterv_module);
/* If the exscan module is not NULL, then this was an
intracommunicator, and therefore scan will have a module as
well. */
if (NULL != module->c_coll.coll_exscan_module) {
OBJ_RELEASE(module->c_coll.coll_exscan_module);
OBJ_RELEASE(module->c_coll.coll_scan_module);
}
}
OBJ_CLASS_INSTANCE(mca_coll_sync_module_t, mca_coll_base_module_t,
mca_coll_sync_module_construct,
mca_coll_sync_module_destruct);
/*
* Initial query function that is invoked during MPI_INIT, allowing
* this component to disqualify itself if it doesn't support the
* required level of thread support.
*/
int mca_coll_sync_init_query(bool enable_progress_threads,
bool enable_mpi_threads)
{
/* Nothing to do */
return OMPI_SUCCESS;
}
/*
* Invoked when there's a new communicator that has been created.
* Look at the communicator and decide which set of functions and
* priority we want to return.
*/
mca_coll_base_module_t *
mca_coll_sync_comm_query(struct ompi_communicator_t *comm,
int *priority)
{
mca_coll_sync_module_t *sync_module;
/* If both MCA params are 0, then disqualify us */
if (0 == mca_coll_sync_component.barrier_before_nops &&
0 == mca_coll_sync_component.barrier_after_nops) {
return NULL;
}
sync_module = OBJ_NEW(mca_coll_sync_module_t);
if (NULL == sync_module) {
return NULL;
}
*priority = mca_coll_sync_component.priority;
/* Choose whether to use [intra|inter] */
sync_module->super.coll_module_enable = mca_coll_sync_module_enable;
/* The "all" versions are already synchronous. So no need for an
additional barrier there. */
sync_module->super.coll_allgather = NULL;
sync_module->super.coll_allgatherv = NULL;
sync_module->super.coll_allreduce = NULL;
sync_module->super.coll_alltoall = NULL;
sync_module->super.coll_alltoallv = NULL;
sync_module->super.coll_alltoallw = NULL;
sync_module->super.coll_barrier = NULL;
sync_module->super.coll_bcast = mca_coll_sync_bcast;
sync_module->super.coll_exscan = mca_coll_sync_exscan;
sync_module->super.coll_gather = mca_coll_sync_gather;
sync_module->super.coll_gatherv = mca_coll_sync_gatherv;
sync_module->super.coll_reduce = mca_coll_sync_reduce;
sync_module->super.coll_reduce_scatter = mca_coll_sync_reduce_scatter;
sync_module->super.coll_scan = mca_coll_sync_scan;
sync_module->super.coll_scatter = mca_coll_sync_scatter;
sync_module->super.coll_scatterv = mca_coll_sync_scatterv;
return &(sync_module->super);
}
/*
* Init module on the communicator
*/
int mca_coll_sync_module_enable(mca_coll_base_module_t *module,
struct ompi_communicator_t *comm)
{
bool good = true;
char *msg = NULL;
mca_coll_sync_module_t *s = (mca_coll_sync_module_t*) module;
/* Save the prior layer of coll functions */
s->c_coll = *comm->c_coll;
#define CHECK_AND_RETAIN(name) \
if (NULL == s->c_coll.coll_ ## name ## _module) { \
good = false; \
msg = #name; \
} else if (good) { \
OBJ_RETAIN(s->c_coll.coll_ ## name ## _module); \
}
CHECK_AND_RETAIN(bcast);
CHECK_AND_RETAIN(gather);
CHECK_AND_RETAIN(gatherv);
CHECK_AND_RETAIN(reduce);
CHECK_AND_RETAIN(reduce_scatter);
CHECK_AND_RETAIN(scatter);
CHECK_AND_RETAIN(scatterv);
if (!OMPI_COMM_IS_INTER(comm)) {
/* MPI does not define scan/exscan on intercommunicators */
CHECK_AND_RETAIN(exscan);
CHECK_AND_RETAIN(scan);
}
/* All done */
if (good) {
return OMPI_SUCCESS;
}
opal_show_help("help-coll-sync.txt", "missing collective", true,
ompi_process_info.nodename,
mca_coll_sync_component.priority, msg);
return OMPI_ERR_NOT_FOUND;
}
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