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/*
* Copyright (c) 2011-2018 Mellanox Technologies. All rights reserved.
* Copyright (c) 2014 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "scoll_mpi.h"
#include "opal/util/show_help.h"
#include "oshmem/proc/proc.h"
#include "oshmem/runtime/runtime.h"
#include "ompi/mca/coll/base/base.h"
#include "opal/util/timings.h"
int mca_scoll_mpi_init_query(bool enable_progress_threads, bool enable_mpi_threads)
{
return OSHMEM_SUCCESS;
}
static void mca_scoll_mpi_module_clear(mca_scoll_mpi_module_t *mpi_module)
{
mpi_module->previous_barrier = NULL;
mpi_module->previous_broadcast = NULL;
mpi_module->previous_reduce = NULL;
mpi_module->previous_collect = NULL;
mpi_module->previous_alltoall = NULL;
}
static void mca_scoll_mpi_module_construct(mca_scoll_mpi_module_t *mpi_module)
{
mca_scoll_mpi_module_clear(mpi_module);
}
static void mca_scoll_mpi_module_destruct(mca_scoll_mpi_module_t *mpi_module)
{
OBJ_RELEASE(mpi_module->previous_barrier_module);
OBJ_RELEASE(mpi_module->previous_broadcast_module);
OBJ_RELEASE(mpi_module->previous_reduce_module);
OBJ_RELEASE(mpi_module->previous_collect_module);
OBJ_RELEASE(mpi_module->previous_alltoall_module);
mca_scoll_mpi_module_clear(mpi_module);
/* Free ompi_comm */
if (mpi_module->comm != &(ompi_mpi_comm_world.comm) && (NULL != mpi_module->comm)) {
ompi_comm_free(&mpi_module->comm);
}
}
#define MPI_SAVE_PREV_SCOLL_API(__api) do {\
mpi_module->previous_ ## __api = osh_group->g_scoll.scoll_ ## __api;\
mpi_module->previous_ ## __api ## _module = osh_group->g_scoll.scoll_ ## __api ## _module;\
if (!osh_group->g_scoll.scoll_ ## __api || !osh_group->g_scoll.scoll_ ## __api ## _module) {\
MPI_COLL_VERBOSE(1, "no underlying " # __api"; disqualifying myself");\
return OSHMEM_ERROR;\
}\
OBJ_RETAIN(mpi_module->previous_ ## __api ## _module);\
} while(0)
static int mca_scoll_mpi_save_coll_handlers(mca_scoll_base_module_t *module, oshmem_group_t *osh_group)
{
mca_scoll_mpi_module_t* mpi_module = (mca_scoll_mpi_module_t*) module;
MPI_SAVE_PREV_SCOLL_API(barrier);
MPI_SAVE_PREV_SCOLL_API(broadcast);
MPI_SAVE_PREV_SCOLL_API(reduce);
MPI_SAVE_PREV_SCOLL_API(collect);
MPI_SAVE_PREV_SCOLL_API(alltoall);
return OSHMEM_SUCCESS;
}
/*
* Initialize module on the communicator
*/
static int mca_scoll_mpi_module_enable(mca_scoll_base_module_t *module,
oshmem_group_t *osh_group)
{
if (OSHMEM_SUCCESS != mca_scoll_mpi_save_coll_handlers(module, osh_group)){
MPI_COLL_ERROR("MPI module enable failed - aborting to prevent inconsistent application state");
/* There's no modules available */
opal_show_help("help-oshmem-scoll-mpi.txt",
"module_enable:fatal", true,
"MPI module enable failed - aborting to prevent inconsistent application state");
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
return OSHMEM_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_scoll_base_module_t *
mca_scoll_mpi_comm_query(oshmem_group_t *osh_group, int *priority)
{
mca_scoll_base_module_t *module;
mca_scoll_mpi_module_t *mpi_module;
int err, i;
int tag;
ompi_group_t* world_group, *new_group;
ompi_communicator_t* newcomm = NULL;
*priority = 0;
mca_scoll_mpi_component_t *cm;
cm = &mca_scoll_mpi_component;
int* ranks;
if (!cm->mpi_enable){
return NULL;
}
if ((osh_group->proc_count < 2) || (osh_group->proc_count < cm->mpi_np)) {
return NULL;
}
OPAL_TIMING_ENV_INIT(comm_query);
/* Create OMPI_Comm object and store ptr to it in group obj*/
if (NULL == oshmem_group_all) {
osh_group->ompi_comm = &(ompi_mpi_comm_world.comm);
OPAL_TIMING_ENV_NEXT(comm_query, "ompi_mpi_comm_world");
} else {
err = ompi_comm_group(&(ompi_mpi_comm_world.comm), &world_group);
if (OPAL_UNLIKELY(OMPI_SUCCESS != err)) {
return NULL;
}
OPAL_TIMING_ENV_NEXT(comm_query, "ompi_comm_group");
ranks = (int*) malloc(osh_group->proc_count * sizeof(int));
if (OPAL_UNLIKELY(NULL == ranks)) {
return NULL;
}
tag = 1;
OPAL_TIMING_ENV_NEXT(comm_query, "malloc");
/* Fill the map "group_rank-to-world_rank" in order to create a new proc group */
for (i = 0; i < osh_group->proc_count; i++) {
ranks[i] = oshmem_proc_pe_vpid(osh_group, i);
}
OPAL_TIMING_ENV_NEXT(comm_query, "build_ranks");
err = ompi_group_incl(world_group, osh_group->proc_count, ranks, &new_group);
if (OPAL_UNLIKELY(OMPI_SUCCESS != err)) {
free(ranks);
return NULL;
}
OPAL_TIMING_ENV_NEXT(comm_query, "ompi_group_incl");
err = ompi_comm_create_group(&(ompi_mpi_comm_world.comm), new_group, tag, &newcomm);
if (OPAL_UNLIKELY(OMPI_SUCCESS != err)) {
free(ranks);
return NULL;
}
OPAL_TIMING_ENV_NEXT(comm_query, "ompi_comm_create_group");
err = ompi_group_free(&new_group);
if (OPAL_UNLIKELY(OMPI_SUCCESS != err)) {
free(ranks);
return NULL;
}
OPAL_TIMING_ENV_NEXT(comm_query, "ompi_group_free");
free(ranks);
osh_group->ompi_comm = newcomm;
OPAL_TIMING_ENV_NEXT(comm_query, "set_group_comm");
}
mpi_module = OBJ_NEW(mca_scoll_mpi_module_t);
if (!mpi_module){
return NULL;
}
mpi_module->comm = osh_group->ompi_comm;
mpi_module->super.scoll_module_enable = mca_scoll_mpi_module_enable;
mpi_module->super.scoll_barrier = mca_scoll_mpi_barrier;
mpi_module->super.scoll_broadcast = mca_scoll_mpi_broadcast;
mpi_module->super.scoll_reduce = mca_scoll_mpi_reduce;
mpi_module->super.scoll_collect = mca_scoll_mpi_collect;
mpi_module->super.scoll_alltoall = NULL;
*priority = cm->mpi_priority;
module = &mpi_module->super;
return module;
}
OBJ_CLASS_INSTANCE(mca_scoll_mpi_module_t,
mca_scoll_base_module_t,
mca_scoll_mpi_module_construct,
mca_scoll_mpi_module_destruct);
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