475 строки
14 KiB
C
475 строки
14 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights 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 "communicator/communicator.h"
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#include "mca/base/mca_base_param.h"
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#include "mca/coll/coll.h"
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#include "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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/* from component.. shouldn't it be cached on the component somehow */
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extern int mca_coll_tuned_use_dynamic_rules_param;
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extern int mca_coll_tuned_init_tree_fanout_param;
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extern int mca_coll_tuned_init_chain_fanout_param;
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extern int mca_coll_tuned_preallocate_memory_comm_size_limit_param;
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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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mca_coll_tuned_module_init,
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mca_coll_tuned_module_finalize,
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/* Collective function pointers */
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/* mca_coll_tuned_allgather_intra_dec_fixed, */
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NULL,
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/* mca_coll_tuned_allgatherv_intra_dec_fixed, */
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NULL,
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/* mca_coll_tuned_allreduce_intra_dec_fixed, */
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NULL,
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mca_coll_tuned_alltoall_intra_dec_fixed,
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/* NULL, */
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/* mca_coll_tuned_alltoallv_intra_dec_fixed, */
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NULL,
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/* mca_coll_tuned_alltoallw_intra_dec_fixed, */
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NULL,
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mca_coll_tuned_barrier_intra_dec_fixed,
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/* NULL, */
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mca_coll_tuned_bcast_intra_dec_fixed,
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/* NULL, */
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/* mca_coll_tuned_exscan_intra_dec_fixed, */
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NULL,
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/* mca_coll_tuned_gather_intra_dec_fixed, */
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NULL,
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/* mca_coll_tuned_gatherv_intra_dec_fixed, */
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NULL,
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mca_coll_tuned_reduce_intra_dec_fixed,
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/* NULL, */
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/* mca_coll_tuned_reduce_scatter_intra_dec_fixed, */
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NULL,
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/* mca_coll_tuned_scan_intra_dec_fixed, */
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NULL,
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/* mca_coll_tuned_scatter_intra_dec_fixed, */
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NULL,
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/* mca_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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mca_coll_tuned_module_init,
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mca_coll_tuned_module_finalize,
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/* Collective function pointers */
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/* mca_coll_tuned_allgather_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_allgatherv_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_allreduce_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_alltoall_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_alltoallv_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_alltoallw_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_barrier_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_bcast_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_exscan_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_gather_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_gatherv_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_reduce_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_reduce_scatter_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_scan_intra_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_scatter_intra_dec_dynamic, */
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NULL,
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/* mca_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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mca_coll_tuned_module_init,
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mca_coll_tuned_module_finalize,
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/* Collective function pointers */
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/* mca_coll_tuned_allgather_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_allgatherv_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_allreduce_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_alltoall_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_alltoallv_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_alltoallw_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_barrier_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_bcast_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_exscan_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_gather_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_gatherv_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_reduce_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_reduce_scatter_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_scan_inter_dec_fixed, */
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NULL,
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/* mca_coll_tuned_scatter_inter_dec_fixed, */
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NULL,
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/* mca_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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mca_coll_tuned_module_init,
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mca_coll_tuned_module_finalize,
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/* Collective function pointers */
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/* mca_coll_tuned_allgather_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_allgatherv_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_allreduce_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_alltoall_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_alltoallv_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_alltoallw_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_barrier_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_bcast_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_exscan_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_gather_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_gatherv_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_reduce_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_reduce_scatter_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_scan_inter_dec_dynamic, */
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NULL,
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/* mca_coll_tuned_scatter_inter_dec_dynamic, */
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NULL,
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/* mca_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 mca_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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mca_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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int use_dynamic = -1;
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printf("Tuned query called\n");
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if (OMPI_SUCCESS != mca_base_param_lookup_int(mca_coll_tuned_priority_param,
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priority)) {
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return NULL;
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}
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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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*/
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if (OMPI_SUCCESS !=
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mca_base_param_lookup_int(mca_coll_tuned_use_dynamic_rules_param,
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&use_dynamic)) {
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printf("No use_dynamic param found!\n");
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return NULL;
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}
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if (OMPI_COMM_IS_INTER(comm)) {
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if (use_dynamic) {
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printf("using inter_dynamic\n");
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to_use = &inter_dynamic;
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} else {
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printf("using inter_fixed\n");
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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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if (use_dynamic) {
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printf("using intra_dynamic\n");
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to_use = &intra_dynamic;
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} else {
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printf("using intra_fixed\n");
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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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mca_coll_tuned_module_init(struct ompi_communicator_t *comm)
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{
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int size;
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struct mca_coll_base_comm_t *data;
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/* fanout parameters */
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int tree_fanout_default = 0;
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int chain_fanout_default = 0;
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int pre_allocate_limit = -1;
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int pre_allocate = 1;
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printf("Tuned init module called.\n");
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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 (OMPI_SUCCESS !=
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mca_base_param_lookup_int(mca_coll_tuned_preallocate_memory_comm_size_limit_param,
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&pre_allocate_limit)) {
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printf("No pre_allocate param found!\n");
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return NULL;
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}
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/* if we within the memory/size limit, allow preallocated data */
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if (size<=pre_allocate_limit) {
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data = 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 = malloc(sizeof(struct mca_coll_base_comm_t));
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if (NULL == data) {
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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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/*
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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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/* get default fanouts is made available via the MCA */
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if (OMPI_SUCCESS !=
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mca_base_param_lookup_int(mca_coll_tuned_init_tree_fanout_param,
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&tree_fanout_default)) {
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printf("warning: no mca_coll_tuned_init_tree_fanout_param found?\n");
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}
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if (OMPI_SUCCESS !=
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mca_base_param_lookup_int(mca_coll_tuned_init_chain_fanout_param,
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&chain_fanout_default)) {
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printf("warning: no mca_coll_tuned_init_chain_fanout_param found?\n");
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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 (tree_fanout_default, comm, 0);
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data->cached_ntree_root = 0;
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data->cached_ntree_fanout = tree_fanout_default;
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/* binary tree */
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data->cached_bintree = ompi_coll_tuned_topo_build_tree (2, comm, 0);
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data->cached_bintree_root = 0;
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/* binomial tree */
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data->cached_bmtree = ompi_coll_tuned_topo_build_bmtree (comm, 0);
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data->cached_bmtree_root = 0;
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/*
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* chains (fanout followed by pipelines)
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* are more difficuilt as the fan out really really depends on message size [sometimes]..
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* as size gets larger fan-out gets smaller [usually]
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*
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* will probably change how we cache this later, for now a midsize
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* GEF
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*/
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data->cached_chain = ompi_coll_tuned_topo_build_chain (chain_fanout_default, comm, 0);
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data->cached_chain_root = 0;
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data->cached_chain_fanout = chain_fanout_default;
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/* standard pipeline */
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data->cached_pipeline = ompi_coll_tuned_topo_build_chain (1, comm, 0);
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data->cached_pipeline_root = 0;
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/* All done */
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comm->c_coll_selected_data = data;
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printf("Tuned looks like it is in use :)\n");
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return to_use;
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}
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/*
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* Finalize module on the communicator
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*/
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int mca_coll_tuned_module_finalize(struct ompi_communicator_t *comm)
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{
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if (NULL == comm->c_coll_selected_module) {
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return OMPI_SUCCESS;
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}
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#if OMPI_ENABLE_DEBUG
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/* Reset the reqs to NULL/0 -- they'll be freed as part of freeing
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the generel c_coll_selected_data */
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comm->c_coll_selected_data->mcct_reqs = NULL;
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comm->c_coll_selected_data->mcct_num_reqs = 0;
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#endif
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/* free any cached information that has been allocated */
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if (comm->c_coll_selected_data->cached_ntree) { /* destroy general tree if defined */
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ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_ntree);
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}
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if (comm->c_coll_selected_data->cached_bintree) { /* destroy bintree if defined */
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ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bintree);
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}
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if (comm->c_coll_selected_data->cached_bmtree) { /* destroy bmtree if defined */
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ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bmtree);
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}
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if (comm->c_coll_selected_data->cached_chain) { /* destroy general chain if defined */
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ompi_coll_tuned_topo_destroy_chain (&comm->c_coll_selected_data->cached_chain);
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}
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if (comm->c_coll_selected_data->cached_pipeline) { /* destroy pipeline if defined */
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ompi_coll_tuned_topo_destroy_chain (&comm->c_coll_selected_data->cached_pipeline);
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}
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/* if allocated memory free it */
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if (comm->c_coll_selected_data) {
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free(comm->c_coll_selected_data);
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comm->c_coll_selected_data = NULL;
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}
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return OMPI_SUCCESS;
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}
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