b608887466
outstanding requests can be limited using mca parameters. The implementation passed Intel, IMB-3.2, and mpi_test_suite tests over TCP and MX up to 128 processes (64 nodes), on both 32-bit and 64-bit machines. It is not activated by default, but it should be useful for really large communicator sizes. This commit was SVN r13720.
304 строки
12 KiB
C
304 строки
12 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 "mpi.h"
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#include "ompi/constants.h"
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#include "ompi/datatype/datatype.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/base/base.h"
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#include "ompi/mca/coll/coll.h"
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#include "ompi/mca/coll/base/coll_tags.h"
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#include "coll_tuned.h"
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#include "ompi/mca/pml/pml.h"
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#include "opal/util/bit_ops.h"
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#include "coll_tuned.h"
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/*
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* Notes on evaluation rules and ordering
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*
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* The order is:
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* use file based rules if presented (-coll_tuned_dynamic_rules_filename = rules)
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* Else
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* use forced rules (-coll_tuned_dynamic_ALG_intra_algorithm = algorithm-number)
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* Else
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* use fixed (compiled) rule set (or nested ifs)
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*
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*/
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/*
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* allreduce_intra
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*
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* Function: - allreduce using other MPI collectives
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* Accepts: - same as MPI_Allreduce()
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* Returns: - MPI_SUCCESS or error code
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*/
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int
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ompi_coll_tuned_allreduce_intra_dec_dynamic (void *sbuf, void *rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream, "ompi_coll_tuned_allreduce_intra_dec_dynamic"));
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/* check to see if we have some filebased rules */
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if (comm->c_coll_selected_data->com_rules[ALLREDUCE]) {
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/* we do, so calc the message size or what ever we need and use this for the evaluation */
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int alg, faninout, segsize, ignoreme;
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size_t dsize;
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ompi_ddt_type_size (dtype, &dsize);
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dsize *= count;
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alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[ALLREDUCE],
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dsize, &faninout, &segsize, &ignoreme);
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if (alg) { /* we have found a valid choice from the file based rules for this message size */
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return ompi_coll_tuned_allreduce_intra_do_this (sbuf, rbuf, count, dtype, op, comm,
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alg, faninout, segsize);
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} /* found a method */
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} /*end if any com rules to check */
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if (comm->c_coll_selected_data->user_forced[ALLREDUCE].algorithm) {
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return ompi_coll_tuned_allreduce_intra_do_forced (sbuf, rbuf, count, dtype, op, comm);
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}
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return ompi_coll_tuned_allreduce_intra_dec_fixed (sbuf, rbuf, count, dtype, op, comm);
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}
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/*
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* alltoall_intra_dec
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*
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* Function: - seletects alltoall algorithm to use
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* Accepts: - same arguments as MPI_Alltoall()
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* Returns: - MPI_SUCCESS or error code (passed from the bcast implementation)
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*/
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int ompi_coll_tuned_alltoall_intra_dec_dynamic(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void* rbuf, int rcount,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream, "ompi_coll_tuned_alltoall_intra_dec_dynamic"));
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/* check to see if we have some filebased rules */
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if (comm->c_coll_selected_data->com_rules[ALLTOALL]) {
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/* we do, so calc the message size or what ever we need and use this for the evaluation */
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int comsize;
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int alg, faninout, segsize, max_requests;
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size_t dsize;
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ompi_ddt_type_size (sdtype, &dsize);
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comsize = ompi_comm_size(comm);
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dsize *= comsize * scount;
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alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[ALLTOALL],
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dsize, &faninout, &segsize, &max_requests);
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if (alg) { /* we have found a valid choice from the file based rules for this message size */
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return ompi_coll_tuned_alltoall_intra_do_this (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm,
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alg, faninout, segsize, max_requests);
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} /* found a method */
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} /*end if any com rules to check */
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if (comm->c_coll_selected_data->user_forced[ALLTOALL].algorithm) {
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return ompi_coll_tuned_alltoall_intra_do_forced (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm);
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}
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return ompi_coll_tuned_alltoall_intra_dec_fixed (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm);
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}
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/*
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* barrier_intra_dec
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*
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* Function: - seletects barrier algorithm to use
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* Accepts: - same arguments as MPI_Barrier()
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* Returns: - MPI_SUCCESS or error code (passed from the barrier implementation)
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*/
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int ompi_coll_tuned_barrier_intra_dec_dynamic(struct ompi_communicator_t *comm)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream,"ompi_coll_tuned_barrier_intra_dec_dynamic"));
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/* check to see if we have some filebased rules */
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if (comm->c_coll_selected_data->com_rules[BARRIER]) {
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/* we do, so calc the message size or what ever we need and use this for the evaluation */
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int alg, faninout, segsize, ignoreme;
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alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[BARRIER],
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0, &faninout, &segsize, &ignoreme);
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if (alg) { /* we have found a valid choice from the file based rules for this message size */
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return ompi_coll_tuned_barrier_intra_do_this (comm,
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alg, faninout, segsize);
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} /* found a method */
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} /*end if any com rules to check */
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if (comm->c_coll_selected_data->user_forced[BARRIER].algorithm) {
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return ompi_coll_tuned_barrier_intra_do_forced (comm);
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}
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return ompi_coll_tuned_barrier_intra_dec_fixed (comm);
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}
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/*
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* bcast_intra_dec
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*
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* Function: - seletects broadcast algorithm to use
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* Accepts: - same arguments as MPI_Bcast()
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* Returns: - MPI_SUCCESS or error code (passed from the bcast implementation)
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*/
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int ompi_coll_tuned_bcast_intra_dec_dynamic(void *buff, int count,
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struct ompi_datatype_t *datatype, int root,
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struct ompi_communicator_t *comm)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:bcast_intra_dec_dynamic"));
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/* check to see if we have some filebased rules */
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if (comm->c_coll_selected_data->com_rules[BCAST]) {
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/* we do, so calc the message size or what ever we need and use this for the evaluation */
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int alg, faninout, segsize, ignoreme;
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size_t dsize;
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ompi_ddt_type_size (datatype, &dsize);
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dsize *= count;
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alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[BCAST],
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dsize, &faninout, &segsize, &ignoreme);
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if (alg) { /* we have found a valid choice from the file based rules for this message size */
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return ompi_coll_tuned_bcast_intra_do_this (buff, count, datatype, root, comm,
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alg, faninout, segsize);
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} /* found a method */
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} /*end if any com rules to check */
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if (comm->c_coll_selected_data->user_forced[BCAST].algorithm) {
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return ompi_coll_tuned_bcast_intra_do_forced (buff, count, datatype, root, comm);
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}
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return ompi_coll_tuned_bcast_intra_dec_fixed (buff, count, datatype, root, comm);
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}
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/*
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* reduce_intra_dec
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*
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* Function: - seletects reduce algorithm to use
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* Accepts: - same arguments as MPI_reduce()
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* Returns: - MPI_SUCCESS or error code (passed from the reduce implementation)
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*
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*/
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int ompi_coll_tuned_reduce_intra_dec_dynamic( void *sendbuf, void *recvbuf,
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int count, struct ompi_datatype_t* datatype,
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struct ompi_op_t* op, int root,
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struct ompi_communicator_t* comm)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:reduce_intra_dec_dynamic"));
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/* check to see if we have some filebased rules */
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if (comm->c_coll_selected_data->com_rules[REDUCE]) {
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/* we do, so calc the message size or what ever we need and use this for the evaluation */
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int alg, faninout, segsize, ignoreme;
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size_t dsize;
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ompi_ddt_type_size (datatype, &dsize);
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dsize *= count;
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alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[REDUCE],
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dsize, &faninout, &segsize, &ignoreme);
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if (alg) { /* we have found a valid choice from the file based rules for this message size */
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return ompi_coll_tuned_reduce_intra_do_this (sendbuf, recvbuf, count, datatype, op, root, comm,
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alg, faninout, segsize);
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} /* found a method */
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} /*end if any com rules to check */
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if (comm->c_coll_selected_data->user_forced[REDUCE].algorithm) {
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return ompi_coll_tuned_reduce_intra_do_forced (sendbuf, recvbuf, count, datatype, op, root, comm);
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}
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return ompi_coll_tuned_reduce_intra_dec_fixed (sendbuf, recvbuf, count, datatype, op, root, comm);
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}
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/*
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* allgather_intra_dec
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*
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* Function: - seletects allgather algorithm to use
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* Accepts: - same arguments as MPI_Allgather()
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* Returns: - MPI_SUCCESS or error code (passed from the selected
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* allgather function).
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*/
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int ompi_coll_tuned_allgather_intra_dec_dynamic(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void* rbuf, int rcount,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream,
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"ompi_coll_tuned_allgather_intra_dec_dynamic"));
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if (comm->c_coll_selected_data->com_rules[ALLGATHER]) {
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/* We have file based rules:
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- calculate message size and other necessary information */
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int comsize;
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int alg, faninout, segsize, ignoreme;
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size_t dsize;
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ompi_ddt_type_size (sdtype, &dsize);
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comsize = ompi_comm_size(comm);
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dsize *= comsize * scount;
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alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[ALLGATHER],
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dsize, &faninout, &segsize, &ignoreme);
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if (alg) {
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/* we have found a valid choice from the file based rules for
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this message size */
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return ompi_coll_tuned_allgather_intra_do_this (sbuf, scount, sdtype,
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rbuf, rcount, rdtype,
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comm, alg, faninout,
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segsize);
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}
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}
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/* We do not have file based rules */
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if (comm->c_coll_selected_data->user_forced[ALLGATHER].algorithm) {
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/* User-forced algorithm */
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return ompi_coll_tuned_allgather_intra_do_forced (sbuf, scount, sdtype,
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rbuf, rcount, rdtype,
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comm);
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}
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/* Use default decision */
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return ompi_coll_tuned_allgather_intra_dec_fixed (sbuf, scount, sdtype,
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rbuf, rcount, rdtype,
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comm);
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}
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