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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2016 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) 2012 Sandia National Laboratories. All rights reserved.
* Copyright (c) 2013-2015 Los Alamos National Security, LLC. 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 "coll_basic.h"
#include <stdio.h>
#include "mpi.h"
#include "ompi/mca/coll/coll.h"
#include "ompi/mca/coll/base/base.h"
#include "ompi/mca/topo/topo.h"
#include "ompi/mca/topo/base/base.h"
#include "coll_basic.h"
/*
* 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.
*/
mca_coll_base_module_t *
mca_coll_basic_comm_query(struct ompi_communicator_t *comm,
int *priority)
{
int size;
mca_coll_basic_module_t *basic_module;
basic_module = OBJ_NEW(mca_coll_basic_module_t);
if (NULL == basic_module) return NULL;
*priority = mca_coll_basic_priority;
/* 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);
}
size *= 2;
if (OMPI_COMM_IS_CART(comm)) {
int cart_size, ndims;
assert (NULL != comm->c_topo);
comm->c_topo->topo.cart.cartdim_get(comm, &ndims);
cart_size = ndims * 4;
if (cart_size > size) {
size = cart_size;
}
} else if (OMPI_COMM_IS_GRAPH(comm)) {
int rank, degree;
assert (NULL != comm->c_topo);
rank = ompi_comm_rank (comm);
comm->c_topo->topo.graph.graph_neighbors_count (comm, rank, °ree);
degree *= 2;
if (degree > size) {
size = degree;
}
} else if (OMPI_COMM_IS_DIST_GRAPH(comm)) {
int dist_graph_size, inneighbors, outneighbors, weighted;
assert (NULL != comm->c_topo);
comm->c_topo->topo.dist_graph.dist_graph_neighbors_count(comm, &inneighbors, &outneighbors, &weighted);
dist_graph_size = inneighbors + outneighbors;
if (dist_graph_size > size) {
size = dist_graph_size;
}
}
/* Choose whether to use [intra|inter], and [linear|log]-based
* algorithms. */
basic_module->super.coll_module_enable = mca_coll_basic_module_enable;
basic_module->super.ft_event = NULL;
if (OMPI_COMM_IS_INTER(comm)) {
basic_module->super.coll_allgather = mca_coll_basic_allgather_inter;
basic_module->super.coll_allgatherv = mca_coll_basic_allgatherv_inter;
basic_module->super.coll_allreduce = mca_coll_basic_allreduce_inter;
basic_module->super.coll_alltoall = mca_coll_basic_alltoall_inter;
basic_module->super.coll_alltoallv = mca_coll_basic_alltoallv_inter;
basic_module->super.coll_alltoallw = mca_coll_basic_alltoallw_inter;
basic_module->super.coll_barrier = mca_coll_basic_barrier_inter_lin;
basic_module->super.coll_bcast = mca_coll_basic_bcast_lin_inter;
basic_module->super.coll_exscan = NULL;
basic_module->super.coll_gather = mca_coll_basic_gather_inter;
basic_module->super.coll_gatherv = mca_coll_basic_gatherv_inter;
basic_module->super.coll_reduce = mca_coll_basic_reduce_lin_inter;
basic_module->super.coll_reduce_scatter_block = mca_coll_basic_reduce_scatter_block_inter;
basic_module->super.coll_reduce_scatter = mca_coll_basic_reduce_scatter_inter;
basic_module->super.coll_scan = NULL;
basic_module->super.coll_scatter = mca_coll_basic_scatter_inter;
basic_module->super.coll_scatterv = mca_coll_basic_scatterv_inter;
} else if (ompi_comm_size(comm) <= mca_coll_basic_crossover) {
basic_module->super.coll_allgather = ompi_coll_base_allgather_intra_basic_linear;
basic_module->super.coll_allgatherv = ompi_coll_base_allgatherv_intra_basic_default;
basic_module->super.coll_allreduce = mca_coll_basic_allreduce_intra;
basic_module->super.coll_alltoall = ompi_coll_base_alltoall_intra_basic_linear;
basic_module->super.coll_alltoallv = ompi_coll_base_alltoallv_intra_basic_linear;
basic_module->super.coll_alltoallw = mca_coll_basic_alltoallw_intra;
basic_module->super.coll_barrier = ompi_coll_base_barrier_intra_basic_linear;
basic_module->super.coll_bcast = ompi_coll_base_bcast_intra_basic_linear;
basic_module->super.coll_exscan = mca_coll_basic_exscan_intra;
basic_module->super.coll_gather = ompi_coll_base_gather_intra_basic_linear;
basic_module->super.coll_gatherv = mca_coll_basic_gatherv_intra;
basic_module->super.coll_reduce = ompi_coll_base_reduce_intra_basic_linear;
basic_module->super.coll_reduce_scatter_block = mca_coll_basic_reduce_scatter_block_intra;
basic_module->super.coll_reduce_scatter = mca_coll_basic_reduce_scatter_intra;
basic_module->super.coll_scan = mca_coll_basic_scan_intra;
basic_module->super.coll_scatter = ompi_coll_base_scatter_intra_basic_linear;
basic_module->super.coll_scatterv = mca_coll_basic_scatterv_intra;
} else {
basic_module->super.coll_allgather = ompi_coll_base_allgather_intra_basic_linear;
basic_module->super.coll_allgatherv = ompi_coll_base_allgatherv_intra_basic_default;
basic_module->super.coll_allreduce = mca_coll_basic_allreduce_intra;
basic_module->super.coll_alltoall = ompi_coll_base_alltoall_intra_basic_linear;
basic_module->super.coll_alltoallv = ompi_coll_base_alltoallv_intra_basic_linear;
basic_module->super.coll_alltoallw = mca_coll_basic_alltoallw_intra;
basic_module->super.coll_barrier = mca_coll_basic_barrier_intra_log;
basic_module->super.coll_bcast = mca_coll_basic_bcast_log_intra;
basic_module->super.coll_exscan = mca_coll_basic_exscan_intra;
basic_module->super.coll_gather = ompi_coll_base_gather_intra_basic_linear;
basic_module->super.coll_gatherv = mca_coll_basic_gatherv_intra;
basic_module->super.coll_reduce = mca_coll_basic_reduce_log_intra;
basic_module->super.coll_reduce_scatter_block = mca_coll_basic_reduce_scatter_block_intra;
basic_module->super.coll_reduce_scatter = mca_coll_basic_reduce_scatter_intra;
basic_module->super.coll_scan = mca_coll_basic_scan_intra;
basic_module->super.coll_scatter = ompi_coll_base_scatter_intra_basic_linear;
basic_module->super.coll_scatterv = mca_coll_basic_scatterv_intra;
}
/* These functions will return an error code if comm does not have a virtual topology */
basic_module->super.coll_neighbor_allgather = mca_coll_basic_neighbor_allgather;
basic_module->super.coll_neighbor_allgatherv = mca_coll_basic_neighbor_allgatherv;
basic_module->super.coll_neighbor_alltoall = mca_coll_basic_neighbor_alltoall;
basic_module->super.coll_neighbor_alltoallv = mca_coll_basic_neighbor_alltoallv;
basic_module->super.coll_neighbor_alltoallw = mca_coll_basic_neighbor_alltoallw;
return &(basic_module->super);
}
/*
* Init module on the communicator
*/
int
mca_coll_basic_module_enable(mca_coll_base_module_t *module,
struct ompi_communicator_t *comm)
{
/* prepare the placeholder for the array of request* */
module->base_data = OBJ_NEW(mca_coll_base_comm_t);
if (NULL == module->base_data) {
return OMPI_ERROR;
}
/* All done */
return OMPI_SUCCESS;
}
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