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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "coll_basic.h"
#include <stdio.h>
#include "mpi.h"
#include "opal/mca/base/mca_base_param.h"
#include "ompi/mca/coll/coll.h"
#include "ompi/mca/coll/base/base.h"
#include "coll_basic.h"
/*
* Linear set of collective algorithms
*/
static const mca_coll_base_module_1_0_0_t intra_linear = {
/* Initialization / finalization functions */
mca_coll_basic_module_init,
mca_coll_basic_module_finalize,
/* Collective function pointers */
mca_coll_basic_allgather_intra,
mca_coll_basic_allgatherv_intra,
mca_coll_basic_allreduce_intra,
mca_coll_basic_alltoall_intra,
mca_coll_basic_alltoallv_intra,
mca_coll_basic_alltoallw_intra,
mca_coll_basic_barrier_intra_lin,
mca_coll_basic_bcast_lin_intra,
mca_coll_basic_exscan_intra,
mca_coll_basic_gather_intra,
mca_coll_basic_gatherv_intra,
mca_coll_basic_reduce_lin_intra,
mca_coll_basic_reduce_scatter_intra,
mca_coll_basic_scan_intra,
mca_coll_basic_scatter_intra,
mca_coll_basic_scatterv_intra
};
/*
* Lograthmic set of collective algorithms. Note that not all
* collectives have lograthmic algorithms. For example, scan will use
* the same algorithm as in the linear set.
*/
static const mca_coll_base_module_1_0_0_t intra_log = {
/* Initialization / finalization functions */
mca_coll_basic_module_init,
mca_coll_basic_module_finalize,
/* Collective function pointers */
mca_coll_basic_allgather_intra,
mca_coll_basic_allgatherv_intra,
mca_coll_basic_allreduce_intra,
mca_coll_basic_alltoall_intra,
mca_coll_basic_alltoallv_intra,
mca_coll_basic_alltoallw_intra,
mca_coll_basic_barrier_intra_log,
mca_coll_basic_bcast_log_intra,
mca_coll_basic_exscan_intra,
mca_coll_basic_gather_intra,
mca_coll_basic_gatherv_intra,
mca_coll_basic_reduce_log_intra,
mca_coll_basic_reduce_scatter_intra,
mca_coll_basic_scan_intra,
mca_coll_basic_scatter_intra,
mca_coll_basic_scatterv_intra
};
/*
* Linear set of collective algorithms for intercommunicators
*/
static const mca_coll_base_module_1_0_0_t inter_linear = {
/* Initialization / finalization functions */
mca_coll_basic_module_init,
mca_coll_basic_module_finalize,
/* Collective function pointers */
mca_coll_basic_allgather_inter,
mca_coll_basic_allgatherv_inter,
mca_coll_basic_allreduce_inter,
mca_coll_basic_alltoall_inter,
mca_coll_basic_alltoallv_inter,
mca_coll_basic_alltoallw_inter,
mca_coll_basic_barrier_inter_lin,
mca_coll_basic_bcast_lin_inter,
NULL,
mca_coll_basic_gather_inter,
mca_coll_basic_gatherv_inter,
mca_coll_basic_reduce_lin_inter,
mca_coll_basic_reduce_scatter_inter,
NULL,
mca_coll_basic_scatter_inter,
mca_coll_basic_scatterv_inter
};
/*
* 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_basic_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.
*/
const mca_coll_base_module_1_0_0_t *
mca_coll_basic_comm_query(struct ompi_communicator_t *comm, int *priority,
struct mca_coll_base_comm_t **data)
{
*priority = mca_coll_basic_priority;
/* Choose whether to use [intra|inter], and [linear|log]-based
* algorithms. */
if (OMPI_COMM_IS_INTER(comm)) {
return &inter_linear;
} else {
if (ompi_comm_size(comm) <= mca_coll_basic_crossover) {
return &intra_linear;
} else {
return &intra_log;
}
}
/* Never reach here */
}
/*
* Init module on the communicator
*/
const struct mca_coll_base_module_1_0_0_t *
mca_coll_basic_module_init(struct ompi_communicator_t *comm)
{
int size;
struct mca_coll_base_comm_t *data;
/* Allocate the data that hangs off the communicator */
if (OMPI_COMM_IS_INTER(comm)) {
size = ompi_comm_remote_size(comm);
} else {
size = ompi_comm_size(comm);
}
data = (struct mca_coll_base_comm_t*)malloc(sizeof(struct mca_coll_base_comm_t) +
(sizeof(ompi_request_t *) * size * 2));
if (NULL == data) {
return NULL;
}
data->mccb_reqs = (ompi_request_t **) (data + 1);
data->mccb_num_reqs = size * 2;
/* All done */
comm->c_coll_basic_data = data;
return comm->c_coll_basic_module;
}
/*
* Finalize module on the communicator
*/
int
mca_coll_basic_module_finalize(struct ompi_communicator_t *comm)
{
if (NULL == comm->c_coll_basic_module) {
return OMPI_SUCCESS;
}
#if OMPI_ENABLE_DEBUG
/* Reset the reqs to NULL/0 -- they'll be freed as part of freeing
* the generel c_coll_basic_data */
comm->c_coll_basic_data->mccb_reqs = NULL;
comm->c_coll_basic_data->mccb_num_reqs = 0;
#endif
/* All done */
free(comm->c_coll_basic_data);
comm->c_coll_basic_data = NULL;
return OMPI_SUCCESS;
}
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