f1aec23507
It contains four algorithms: Bruck (ciel(logP) steps), Recursive Doubling (log(P) for power-of-2 processes), Ring (P-1 steps), and Neighbor Exchange (P/2 steps for even number of processes). All algorithms passed occ, IMB-2.3, and intel verification tests from ompi-tests/ for up to 56 processes. The fixed decision function is based on results collected over MX on the Grig cluster at the University of Tennessee at Knoxville. I have also added (and commented out) copy of MPICH2 decision function for allgather (from their IJHPCA 2005 paper). This commit was SVN r12910.
546 строки
19 KiB
C
546 строки
19 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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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 "ompi_config.h"
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#include "coll_tuned.h"
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#include <stdio.h>
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#include "mpi.h"
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#include "ompi/communicator/communicator.h"
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#include "opal/mca/base/mca_base_param.h"
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#include "ompi/mca/coll/coll.h"
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#include "ompi/mca/coll/base/base.h"
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#include "coll_tuned.h"
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#include "coll_tuned_topo.h"
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#include "coll_tuned_dynamic_rules.h"
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#include "coll_tuned_dynamic_file.h"
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#include "coll_tuned_forced.h"
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/*
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* Which set are we using?
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*/
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static const mca_coll_base_module_1_0_0_t *to_use = NULL;
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/*
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* Intra communicator decision functions
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*
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* Two prototypes, one for fixed rules and one for dynamic rules
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*
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*/
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static const mca_coll_base_module_1_0_0_t intra_fixed = {
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/* Initialization / finalization functions */
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ompi_coll_tuned_module_init,
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ompi_coll_tuned_module_finalize,
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/* Collective function pointers */
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ompi_coll_tuned_allgather_intra_dec_fixed,
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/* NULL, */
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/* ompi_coll_tuned_allgatherv_intra_dec_fixed, */
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NULL,
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ompi_coll_tuned_allreduce_intra_dec_fixed,
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/* NULL, */
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ompi_coll_tuned_alltoall_intra_dec_fixed,
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/* NULL, */
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/* ompi_coll_tuned_alltoallv_intra_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_alltoallw_intra_dec_fixed, */
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NULL,
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ompi_coll_tuned_barrier_intra_dec_fixed,
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/* NULL, */
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ompi_coll_tuned_bcast_intra_dec_fixed,
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/* NULL, */
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/* ompi_coll_tuned_exscan_intra_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_gather_intra_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_gatherv_intra_dec_fixed, */
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NULL,
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ompi_coll_tuned_reduce_intra_dec_fixed,
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/* NULL, */
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/* ompi_coll_tuned_reduce_scatter_intra_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_scan_intra_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_scatter_intra_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_scatterv_intra_dec_fixed */
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NULL
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};
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static const mca_coll_base_module_1_0_0_t intra_dynamic = {
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/* Initialization / finalization functions */
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ompi_coll_tuned_module_init,
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ompi_coll_tuned_module_finalize,
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/* Collective function pointers */
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ompi_coll_tuned_allgather_intra_dec_dynamic,
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/* NULL, */
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/* ompi_coll_tuned_allgatherv_intra_dec_dynamic, */
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NULL,
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ompi_coll_tuned_allreduce_intra_dec_dynamic,
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/* NULL, */
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ompi_coll_tuned_alltoall_intra_dec_dynamic,
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/* NULL, */
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/* ompi_coll_tuned_alltoallv_intra_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_alltoallw_intra_dec_dynamic, */
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NULL,
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ompi_coll_tuned_barrier_intra_dec_dynamic,
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/* NULL, */
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ompi_coll_tuned_bcast_intra_dec_dynamic,
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/* NULL, */
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/* ompi_coll_tuned_exscan_intra_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_gather_intra_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_gatherv_intra_dec_dynamic, */
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NULL,
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ompi_coll_tuned_reduce_intra_dec_dynamic,
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/* NULL, */
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/* ompi_coll_tuned_reduce_scatter_intra_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_scan_intra_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_scatter_intra_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_scatterv_intra_dec_dynamic */
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NULL
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};
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/*
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* collective decision functions for intercommunicators
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*
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* Two prototypes, one for fixed rules and one for dynamic rules
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*
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*/
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static const mca_coll_base_module_1_0_0_t inter_fixed = {
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/* Initialization / finalization functions */
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ompi_coll_tuned_module_init,
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ompi_coll_tuned_module_finalize,
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/* Collective function pointers */
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/* ompi_coll_tuned_allgather_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_allgatherv_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_allreduce_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_alltoall_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_alltoallv_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_alltoallw_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_barrier_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_bcast_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_exscan_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_gather_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_gatherv_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_reduce_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_reduce_scatter_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_scan_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_scatter_inter_dec_fixed, */
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NULL,
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/* ompi_coll_tuned_scatterv_inter_dec_fixed */
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NULL
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};
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static const mca_coll_base_module_1_0_0_t inter_dynamic = {
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/* Initialization / finalization functions */
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ompi_coll_tuned_module_init,
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ompi_coll_tuned_module_finalize,
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/* Collective function pointers */
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/* ompi_coll_tuned_allgather_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_allgatherv_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_allreduce_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_alltoall_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_alltoallv_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_alltoallw_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_barrier_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_bcast_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_exscan_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_gather_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_gatherv_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_reduce_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_reduce_scatter_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_scan_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_scatter_inter_dec_dynamic, */
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NULL,
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/* ompi_coll_tuned_scatterv_inter_dec_dynamic */
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NULL
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};
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/*
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* Note I keep the names here as place markers until all the functions
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* are implemented
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*/
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/*
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* Initial query function that is invoked during MPI_INIT, allowing
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* this component to disqualify itself if it doesn't support the
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* required level of thread support.
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*/
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int ompi_coll_tuned_init_query(bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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/* Nothing to do */
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return OMPI_SUCCESS;
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}
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/*
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* Invoked when there's a new communicator that has been created.
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* Look at the communicator and decide which set of functions and
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* priority we want to return.
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*/
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const mca_coll_base_module_1_0_0_t *
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ompi_coll_tuned_comm_query(struct ompi_communicator_t *comm, int *priority,
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struct mca_coll_base_comm_t **data)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:module_tuned query called"));
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*priority = ompi_coll_tuned_priority;
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/*
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* Choose whether to use [intra|inter] decision functions
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* and if using fixed OR dynamic rule sets.
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* Right now you cannot mix them, maybe later on it can be changed
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* but this would probably add an extra if and funct call to the path
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*/
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if (OMPI_COMM_IS_INTER(comm)) {
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if (ompi_coll_tuned_use_dynamic_rules) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_query using inter_dynamic"));
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to_use = &inter_dynamic;
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} else {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_query using inter_fixed"));
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to_use = &inter_fixed;
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}
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} else { /* is an intra comm */
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/**
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* If the communicator size is less than 2 we have specialized modules
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* to handle the intra collective communications.
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*/
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if( ompi_comm_size(comm) < 2) {
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*priority = 0;
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return NULL;
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}
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if (ompi_coll_tuned_use_dynamic_rules) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_query using intra_dynamic"));
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to_use = &intra_dynamic;
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} else {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_query using intra_fixed"));
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to_use = &intra_fixed;
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}
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}
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return to_use;
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}
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/*
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* Init module on the communicator
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*/
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const struct mca_coll_base_module_1_0_0_t *
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ompi_coll_tuned_module_init(struct ompi_communicator_t *comm)
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{
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int size, rank;
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struct mca_coll_base_comm_t *data;
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/* fanout parameters */
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int rc=0;
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int i;
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init called."));
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/* This routine will become more complex and might have to be */
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/* broken into more sections/function calls */
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/* Order of operations:
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* alloc memory for nb reqs (in case we fall through)
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* add decision rules if using dynamic rules
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* compact rules using communicator size info etc
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* build first guess cached topologies (might depend on the rules from above)
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*
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* then attach all to the communicator and return base module funct ptrs
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*/
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/* Allocate the data that hangs off the communicator */
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if (OMPI_COMM_IS_INTER(comm)) {
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size = ompi_comm_remote_size(comm);
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} else {
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size = ompi_comm_size(comm);
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}
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/*
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* we still malloc data as it is used by the TUNED modules
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* if we don't allocate it and fall back to a BASIC module routine then confuses debuggers
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* we place any special info after the default data
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*
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* BUT on very large systems we might not be able to allocate all this memory so
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* we do check a MCA parameter to see if if we should allocate this memory
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*
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* The default is set very high
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*
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*/
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/* if we within the memory/size limit, allow preallocated data */
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if (size<=ompi_coll_tuned_preallocate_memory_comm_size_limit) {
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data = (mca_coll_base_comm_t*)malloc(sizeof(struct mca_coll_base_comm_t) +
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(sizeof(ompi_request_t *) * size * 2));
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if (NULL == data) {
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return NULL;
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}
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data->mcct_reqs = (ompi_request_t **) (data + 1);
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data->mcct_num_reqs = size * 2;
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}
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else {
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data = (mca_coll_base_comm_t*)malloc(sizeof(struct mca_coll_base_comm_t));
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if (NULL == data) {
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return NULL;
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}
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data->mcct_reqs = (ompi_request_t **) NULL;
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data->mcct_num_reqs = 0;
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}
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/*
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* If using dynamic and you are MPI_COMM_WORLD and you want to use a parameter file..
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* then this effects how much storage space you need
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* (This is a basic version of what will go into V2)
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*
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*/
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size = ompi_comm_size(comm); /* find size so we can (A) decide if to access the file directly */
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/* (B) so we can get our very own customised ompi_coll_com_rule_t ptr */
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/* which only has rules in it for our com size */
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rank = ompi_comm_rank(comm); /* find rank as only MCW:0 opens any tuned conf files */
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/* actually if they are below a threadhold, they all open it */
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/* have to build a collective in here.. but just for MCW.. */
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/* but we have to make sure we have the same rules everywhere :( */
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/* if using dynamic rules make sure all overrides are NULL before we start override anything accidently */
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if (ompi_coll_tuned_use_dynamic_rules) {
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/* base rules */
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data->all_base_rules = (ompi_coll_alg_rule_t*) NULL;
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/* each collective rule for my com size */
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for (i=0;i<COLLCOUNT;i++) {
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data->com_rules[i] = (ompi_coll_com_rule_t*) NULL;
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}
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}
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/* next dynamic state, recheck all forced rules as well */
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/* warning, we should check to make sure this is really an INTRA comm here... */
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if (ompi_coll_tuned_use_dynamic_rules) {
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ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[ALLREDUCE], &(data->user_forced[ALLREDUCE]));
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ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[ALLTOALL], &(data->user_forced[ALLTOALL]));
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ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[ALLGATHER], &(data->user_forced[ALLGATHER]));
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/* ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[ALLTOALLV], &(data->user_forced[ALLTOALLV])); */
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ompi_coll_tuned_forced_getvalues_barrier (ompi_coll_tuned_forced_params[BARRIER], &(data->user_forced[BARRIER]));
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ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[BCAST], &(data->user_forced[BCAST]));
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ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[REDUCE], &(data->user_forced[REDUCE]));
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}
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if (&ompi_mpi_comm_world==comm) {
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if (ompi_coll_tuned_use_dynamic_rules) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init MCW & Dynamic"));
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if (ompi_coll_tuned_dynamic_rules_filename) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init Opening [%s]",
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ompi_coll_tuned_dynamic_rules_filename));
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rc = ompi_coll_tuned_read_rules_config_file (ompi_coll_tuned_dynamic_rules_filename,
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&(data->all_base_rules), COLLCOUNT);
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if (rc>=0) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init Read %d valid rules\n", rc));
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/* at this point we all have a base set of rules */
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/* now we can get our customized communicator sized rule set, for each collective */
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for (i=0;i<COLLCOUNT;i++) {
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data->com_rules[i] = ompi_coll_tuned_get_com_rule_ptr (data->all_base_rules, i, size);
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}
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}
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else { /* failed to read config file, thus make sure its a NULL... */
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data->all_base_rules = (ompi_coll_alg_rule_t*) NULL;
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}
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} /* end if a config filename exists */
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} /* end if dynamic_rules */
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} /* end if MCW */
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/* ok, if using dynamic rules, not MCW and we are just any rank and a base set of rules exist.. ref them */
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/* order of eval is important here, if we are MCW ompi_mpi_comm_world.c_coll_selected_data is NULL still.. */
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if ((ompi_coll_tuned_use_dynamic_rules)&&(!(&ompi_mpi_comm_world==comm))&&
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((ompi_mpi_comm_world.c_coll_selected_data)->all_base_rules)) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init NOT MCW & Dynamic"));
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/* this will, erm fail if MCW doesn't exist which it should! */
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data->all_base_rules = (ompi_mpi_comm_world.c_coll_selected_data)->all_base_rules;
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/* at this point we all have a base set of rules if they exist atall */
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/* now we can get our customized communicator sized rule set, for each collective */
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for (i=0;i<COLLCOUNT;i++) {
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data->com_rules[i] = ompi_coll_tuned_get_com_rule_ptr (data->all_base_rules, i, size);
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}
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}
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/*
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* now for the cached topo functions
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* guess the initial topologies to use rank 0 as root
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*/
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/* general n fan out tree */
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data->cached_ntree = ompi_coll_tuned_topo_build_tree (ompi_coll_tuned_init_tree_fanout, comm, 0);
|
|
data->cached_ntree_root = 0;
|
|
data->cached_ntree_fanout = ompi_coll_tuned_init_tree_fanout;
|
|
|
|
/* binary tree */
|
|
data->cached_bintree = ompi_coll_tuned_topo_build_tree (2, comm, 0);
|
|
data->cached_bintree_root = 0;
|
|
|
|
/* binomial tree */
|
|
data->cached_bmtree = ompi_coll_tuned_topo_build_bmtree (comm, 0);
|
|
data->cached_bmtree_root = 0;
|
|
|
|
/*
|
|
* chains (fanout followed by pipelines)
|
|
* are more difficuilt as the fan out really really depends on message size [sometimes]..
|
|
* as size gets larger fan-out gets smaller [usually]
|
|
*
|
|
* will probably change how we cache this later, for now a midsize
|
|
* GEF
|
|
*/
|
|
data->cached_chain = ompi_coll_tuned_topo_build_chain (ompi_coll_tuned_init_chain_fanout, comm, 0);
|
|
data->cached_chain_root = 0;
|
|
data->cached_chain_fanout = ompi_coll_tuned_init_chain_fanout;
|
|
|
|
/* standard pipeline */
|
|
data->cached_pipeline = ompi_coll_tuned_topo_build_chain (1, comm, 0);
|
|
data->cached_pipeline_root = 0;
|
|
|
|
/* All done */
|
|
|
|
comm->c_coll_selected_data = data;
|
|
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init Tuned is in use"));
|
|
return to_use;
|
|
}
|
|
|
|
|
|
/*
|
|
* Finalize module on the communicator
|
|
*/
|
|
int ompi_coll_tuned_module_finalize(struct ompi_communicator_t *comm)
|
|
{
|
|
if (NULL == comm->c_coll_selected_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_selected_data */
|
|
|
|
comm->c_coll_selected_data->mcct_reqs = NULL;
|
|
comm->c_coll_selected_data->mcct_num_reqs = 0;
|
|
#endif
|
|
|
|
/* free any cached information that has been allocated */
|
|
if (comm->c_coll_selected_data->cached_ntree) { /* destroy general tree if defined */
|
|
ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_ntree);
|
|
}
|
|
if (comm->c_coll_selected_data->cached_bintree) { /* destroy bintree if defined */
|
|
ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bintree);
|
|
}
|
|
if (comm->c_coll_selected_data->cached_bmtree) { /* destroy bmtree if defined */
|
|
ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bmtree);
|
|
}
|
|
if (comm->c_coll_selected_data->cached_chain) { /* destroy general chain if defined */
|
|
ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_chain);
|
|
}
|
|
if (comm->c_coll_selected_data->cached_pipeline) { /* destroy pipeline if defined */
|
|
ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_pipeline);
|
|
}
|
|
|
|
/* if any algorithm rules are cached on the communicator, only free them if its MCW */
|
|
/* as this is the only place they are allocated by reading the decision configure file */
|
|
if ((ompi_coll_tuned_use_dynamic_rules)&&(&ompi_mpi_comm_world==comm)) {
|
|
if (comm->c_coll_selected_data->all_base_rules) {
|
|
ompi_coll_tuned_free_all_rules (comm->c_coll_selected_data->all_base_rules, COLLCOUNT);
|
|
}
|
|
}
|
|
|
|
/* if allocated memory free it */
|
|
if (comm->c_coll_selected_data) {
|
|
free(comm->c_coll_selected_data);
|
|
comm->c_coll_selected_data = NULL;
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|