addes binomial tree based scatter, passed IBM and intel tests
This commit was SVN r13906.
Этот коммит содержится в:
Li-Ta Lo
родитель
11c94cbe76
Коммит
196e2a86bb
@ -37,6 +37,7 @@ sources = \
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coll_tuned_bcast.c \
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coll_tuned_reduce.c \
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coll_tuned_gather.c \
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coll_tuned_scatter.c \
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coll_tuned_component.c \
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coll_tuned_module.c
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@ -251,6 +251,11 @@ extern int ompi_coll_tuned_forced_max_algorithms[COLLCOUNT];
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/* Scatter */
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int ompi_coll_tuned_scatter_intra_dec_fixed(SCATTER_ARGS);
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int ompi_coll_tuned_scatter_intra_dec_dynamic(SCATTER_ARGS);
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int ompi_coll_tuned_scatter_intra_do_forced(SCATTER_ARGS);
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int ompi_coll_tuned_scatter_intra_do_this(SCATTER_ARGS, int algorithm, int faninout, int segsize);
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int ompi_coll_tuned_scatter_intra_check_forced_init (coll_tuned_force_algorithm_mca_param_indices_t *mca_param_indices);
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int ompi_coll_tuned_scatter_intra_basic_linear(SCATTER_ARGS);
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int ompi_coll_tuned_scatter_intra_binomial(SCATTER_ARGS);
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int ompi_coll_tuned_scatter_inter_dec_fixed(SCATTER_ARGS);
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int ompi_coll_tuned_scatter_inter_dec_dynamic(SCATTER_ARGS);
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@ -192,6 +192,7 @@ static int tuned_open(void)
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ompi_coll_tuned_bcast_intra_check_forced_init(&ompi_coll_tuned_forced_params[BCAST]);
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ompi_coll_tuned_reduce_intra_check_forced_init(&ompi_coll_tuned_forced_params[REDUCE]);
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ompi_coll_tuned_gather_intra_check_forced_init(&ompi_coll_tuned_forced_params[GATHER]);
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ompi_coll_tuned_scatter_intra_check_forced_init(&ompi_coll_tuned_forced_params[SCATTER]);
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}
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:component_open: done!"));
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@ -321,3 +321,24 @@ int ompi_coll_tuned_gather_intra_dec_dynamic(void *sbuf, int scount,
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rbuf, rcount, rdtype,
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root, comm);
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}
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int ompi_coll_tuned_scatter_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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int root, 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_scatter_intra_dec_dynamic"));
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if (comm->c_coll_selected_data->user_forced[SCATTER].algorithm) {
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return ompi_coll_tuned_scatter_intra_do_forced (sbuf, scount, sdtype,
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rbuf, rcount, rdtype,
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root, comm);
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}
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return ompi_coll_tuned_scatter_intra_dec_fixed (sbuf, scount, sdtype,
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rbuf, rcount, rdtype,
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root, comm);
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}
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@ -496,6 +496,7 @@ int ompi_coll_tuned_allgather_intra_dec_fixed(void *sbuf, int scount,
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rbuf, rcount, rdtype, comm);
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#endif /* defined(USE_MPICH2_DECISION) */
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}
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/*
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* gather_intra_dec
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*
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@ -506,10 +507,10 @@ int ompi_coll_tuned_allgather_intra_dec_fixed(void *sbuf, int scount,
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*/
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int ompi_coll_tuned_gather_intra_dec_fixed(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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int root, struct ompi_communicator_t *comm)
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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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int root, 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_gather_intra_dec_fixed"));
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@ -517,3 +518,25 @@ int ompi_coll_tuned_gather_intra_dec_fixed(void *sbuf, int scount,
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rbuf, rcount, rdtype,
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root, comm);
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}
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/*
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* scatter_intra_dec
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*
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* Function: - seletects scatter algorithm to use
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* Accepts: - same arguments as MPI_Scatter()
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* Returns: - MPI_SUCCESS or error code, passed from corresponding
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* internal allgather function.
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*/
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int ompi_coll_tuned_scatter_intra_dec_fixed(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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int root, 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_scatter_intra_dec_fixed"));
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return ompi_coll_tuned_scatter_intra_basic_linear (sbuf, scount, sdtype,
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rbuf, rcount, rdtype,
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root, comm);
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}
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@ -80,8 +80,8 @@ static const mca_coll_base_module_1_0_0_t intra_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_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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@ -123,8 +123,8 @@ static const mca_coll_base_module_1_0_0_t intra_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_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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@ -401,6 +401,7 @@ ompi_coll_tuned_module_init(struct ompi_communicator_t *comm)
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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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ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[GATHER], &(data->user_forced[GATHER]));
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ompi_coll_tuned_forced_getvalues (ompi_coll_tuned_forced_params[SCATTER], &(data->user_forced[SCATTER]));
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}
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387
ompi/mca/coll/tuned/coll_tuned_scatter.c
Обычный файл
387
ompi/mca/coll/tuned/coll_tuned_scatter.c
Обычный файл
@ -0,0 +1,387 @@
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/*
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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 "ompi/mca/coll/coll.h"
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#include "ompi/mca/coll/base/coll_tags.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/op/op.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_util.h"
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int
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ompi_coll_tuned_scatter_intra_binomial(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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int root, struct ompi_communicator_t *comm)
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{
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int line = -1;
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int i;
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int rank;
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int vrank;
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int size;
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int total_recv = 0, total_send = 0;
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char *ptmp = NULL;
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char *tempbuf = NULL;
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int err;
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ompi_coll_tree_t* bmtree;
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MPI_Status status;
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MPI_Aint sextent, slb, strue_lb, strue_extent;
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MPI_Aint rextent, rlb, rtrue_lb, rtrue_extent;
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size = ompi_comm_size(comm);
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rank = ompi_comm_rank(comm);
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OPAL_OUTPUT((ompi_coll_tuned_stream,
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"ompi_coll_tuned_scatter_intra_binomial rank %d", rank));
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/* create the binomial tree */
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COLL_TUNED_UPDATE_IN_ORDER_BMTREE( comm, root );
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bmtree = comm->c_coll_selected_data->cached_in_order_bmtree;
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ompi_ddt_get_extent(sdtype, &slb, &sextent);
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ompi_ddt_get_true_extent(sdtype, &strue_lb, &strue_extent);
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ompi_ddt_get_extent(rdtype, &rlb, &rextent);
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ompi_ddt_get_true_extent(rdtype, &rtrue_lb, &rtrue_extent);
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vrank = (rank - root + size) % size;
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if (rank == root) {
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if (0 == root) {
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/* root on 0, just use the send buffer */
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ptmp = sbuf;
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if (rbuf != MPI_IN_PLACE) {
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/* local copy to rbuf */
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err = ompi_ddt_sndrcv(sbuf, scount, sdtype,
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rbuf, rcount, rdtype);
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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}
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} else {
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/* root is not on 0, allocate temp buffer for send */
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tempbuf = malloc(strue_extent + (scount*size - 1) * sextent);
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if (NULL == tempbuf) {
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err = OMPI_ERR_OUT_OF_RESOURCE; line = __LINE__; goto err_hndl;
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}
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ptmp = tempbuf - slb;
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/* and rotate data so they will eventually in the right place */
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err = ompi_ddt_copy_content_same_ddt(sdtype, scount*(size - root),
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ptmp, (char *) sbuf + sextent*root*scount);
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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err = ompi_ddt_copy_content_same_ddt(sdtype, scount*root,
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ptmp + sextent*scount*(size - root), sbuf);
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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if (rbuf != MPI_IN_PLACE) {
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/* local copy to rbuf */
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err = ompi_ddt_sndrcv(ptmp, scount, sdtype,
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rbuf, rcount, rdtype);
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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}
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}
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total_send = scount;
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} else if (!(vrank % 2)) {
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/* non-root, non-leaf nodes, allocte temp buffer for recv
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* the most we need is rcount*size/2 */
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tempbuf = malloc(rtrue_extent + (rcount*size - 1) * rextent);
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if (NULL == tempbuf) {
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err= OMPI_ERR_OUT_OF_RESOURCE; line = __LINE__; goto err_hndl;
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}
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ptmp = tempbuf - rlb;
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sdtype = rdtype;
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scount = rcount;
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sextent = rextent;
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total_send = scount;
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} else {
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/* leaf nodes, just use rbuf */
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ptmp = rbuf;
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}
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if (!(vrank % 2)) {
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if (rank != root) {
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/* recv from parent on non-root */
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err = MCA_PML_CALL(recv(ptmp, rcount*size, rdtype, bmtree->tree_prev,
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MCA_COLL_BASE_TAG_SCATTER, comm, &status));
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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/* local copy to rbuf */
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err = ompi_ddt_sndrcv(ptmp, scount, sdtype,
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rbuf, rcount, rdtype);
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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}
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/* send to children on all non-leaf */
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for (i = 0; i < bmtree->tree_nextsize; i++) {
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int mycount = 0, vkid;
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/* figure out how much data I have to send to this child */
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vkid = (bmtree->tree_next[i] - root + size) % size;
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mycount = vkid - vrank;
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if (mycount > (size - vkid))
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mycount = size - vkid;
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mycount *= scount;
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err = MCA_PML_CALL(send(ptmp + total_send*sextent, mycount, sdtype,
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bmtree->tree_next[i],
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MCA_COLL_BASE_TAG_SCATTER,
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MCA_PML_BASE_SEND_STANDARD, comm));
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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total_send += mycount;
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}
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if (NULL != tempbuf)
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free(tempbuf);
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} else {
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/* recv from parent on leaf nodes */
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err = MCA_PML_CALL(recv(ptmp, rcount, rdtype, bmtree->tree_prev,
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MCA_COLL_BASE_TAG_SCATTER, comm, &status));
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if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
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}
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return MPI_SUCCESS;
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err_hndl:
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if (NULL != tempbuf)
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free(tempbuf);
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OPAL_OUTPUT((ompi_coll_tuned_stream, "%s:%4d\tError occurred %d, rank %2d",
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__FILE__, line, err, rank));
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return err;
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}
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/*
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* Linear functions are copied from the BASIC coll module
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* they do not segment the message and are simple implementations
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* but for some small number of nodes and/or small data sizes they
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* are just as fast as tuned/tree based segmenting operations
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* and as such may be selected by the decision functions
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* These are copied into this module due to the way we select modules
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* in V1. i.e. in V2 we will handle this differently and so will not
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* have to duplicate code.
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* JPG following the examples from other coll_tuned implementations. Dec06.
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*/
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/* copied function (with appropriate renaming) starts here */
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/*
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* scatter_intra
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*
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* Function: - basic scatter operation
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* Accepts: - same arguments as MPI_Scatter()
|
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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_scatter_intra_basic_linear(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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int root, struct ompi_communicator_t *comm)
|
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{
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int i, rank, size, err;
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char *ptmp;
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ptrdiff_t lb, incr;
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/* Initialize */
|
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rank = ompi_comm_rank(comm);
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size = ompi_comm_size(comm);
|
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|
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/* If not root, receive data. */
|
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|
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if (rank != root) {
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err = MCA_PML_CALL(recv(rbuf, rcount, rdtype, root,
|
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MCA_COLL_BASE_TAG_SCATTER,
|
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comm, MPI_STATUS_IGNORE));
|
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return err;
|
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}
|
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|
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/* I am the root, loop sending data. */
|
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|
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err = ompi_ddt_get_extent(sdtype, &lb, &incr);
|
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if (OMPI_SUCCESS != err) {
|
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return OMPI_ERROR;
|
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}
|
||||
|
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incr *= scount;
|
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for (i = 0, ptmp = (char *) sbuf; i < size; ++i, ptmp += incr) {
|
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|
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/* simple optimization */
|
||||
|
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if (i == rank) {
|
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if (MPI_IN_PLACE != rbuf) {
|
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err =
|
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ompi_ddt_sndrcv(ptmp, scount, sdtype, rbuf, rcount,
|
||||
rdtype);
|
||||
}
|
||||
} else {
|
||||
err = MCA_PML_CALL(send(ptmp, scount, sdtype, i,
|
||||
MCA_COLL_BASE_TAG_SCATTER,
|
||||
MCA_PML_BASE_SEND_STANDARD, comm));
|
||||
}
|
||||
if (MPI_SUCCESS != err) {
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
/* All done */
|
||||
|
||||
return MPI_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
/* copied function (with appropriate renaming) ends here */
|
||||
|
||||
/* The following are used by dynamic and forced rules */
|
||||
|
||||
/* publish details of each algorithm and if its forced/fixed/locked in */
|
||||
/* as you add methods/algorithms you must update this and the query/map
|
||||
routines */
|
||||
|
||||
/* this routine is called by the component only */
|
||||
/* this makes sure that the mca parameters are set to their initial values
|
||||
and perms */
|
||||
/* module does not call this they call the forced_getvalues routine instead */
|
||||
|
||||
int
|
||||
ompi_coll_tuned_scatter_intra_check_forced_init(coll_tuned_force_algorithm_mca_param_indices_t *mca_param_indices)
|
||||
{
|
||||
int rc, max_alg = 2, requested_alg;
|
||||
|
||||
ompi_coll_tuned_forced_max_algorithms[SCATTER] = max_alg;
|
||||
|
||||
rc = mca_base_param_reg_int (&mca_coll_tuned_component.super.collm_version,
|
||||
"scatter_algorithm_count",
|
||||
"Number of scatter algorithms available",
|
||||
false, true, max_alg, NULL);
|
||||
|
||||
mca_param_indices->algorithm_param_index
|
||||
= mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version,
|
||||
"scatter_algorithm",
|
||||
"Which scatter algorithm is used. Can be locked down to choice of: 0 ignore, 1 basic linear, 2 binomial.",
|
||||
false, false, 0, NULL);
|
||||
mca_base_param_lookup_int(mca_param_indices->algorithm_param_index,
|
||||
&(requested_alg));
|
||||
if( requested_alg > max_alg ) {
|
||||
if( 0 == ompi_comm_rank( MPI_COMM_WORLD ) ) {
|
||||
opal_output( 0, "Scatter algorithm #%d is not available (range [0..%d]). Switching back to ignore(0)\n",
|
||||
requested_alg, max_alg );
|
||||
}
|
||||
mca_base_param_set_int( mca_param_indices->algorithm_param_index, 0);
|
||||
}
|
||||
|
||||
mca_param_indices->segsize_param_index
|
||||
= mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version,
|
||||
"Scatter_algorithm_segmentsize",
|
||||
"Segment size in bytes used by default for scatter algorithms. Only has meaning if algorithm is forced and supports segmenting. 0 bytes means no segmentation. Currently, available algorithms do not support segmentation.",
|
||||
false, false, 0, NULL);
|
||||
|
||||
mca_param_indices->tree_fanout_param_index
|
||||
= mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version,
|
||||
"scatter_algorithm_tree_fanout",
|
||||
"Fanout for n-tree used for scatter algorithms. Only has meaning if algorithm is forced and supports n-tree topo based operation. Currently, available algorithms do not support n-tree topologies.",
|
||||
false, false,
|
||||
ompi_coll_tuned_init_tree_fanout, /* get system wide default */
|
||||
NULL);
|
||||
|
||||
mca_param_indices->chain_fanout_param_index
|
||||
= mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version,
|
||||
"scatter_algorithm_chain_fanout",
|
||||
"Fanout for chains used for scatter algorithms. Only has meaning if algorithm is forced and supports chain topo based operation. Currently, available algorithms do not support chain topologies.",
|
||||
false, false,
|
||||
ompi_coll_tuned_init_chain_fanout, /* get system wide default */
|
||||
NULL);
|
||||
|
||||
return (MPI_SUCCESS);
|
||||
}
|
||||
|
||||
int
|
||||
ompi_coll_tuned_scatter_intra_do_forced(void *sbuf, int scount,
|
||||
struct ompi_datatype_t *sdtype,
|
||||
void* rbuf, int rcount,
|
||||
struct ompi_datatype_t *rdtype,
|
||||
int root, struct ompi_communicator_t *comm)
|
||||
{
|
||||
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
||||
"coll:tuned:scatter_intra_do_forced selected algorithm %d",
|
||||
comm->c_coll_selected_data->user_forced[SCATTER].algorithm));
|
||||
|
||||
switch (comm->c_coll_selected_data->user_forced[SCATTER].algorithm) {
|
||||
case (0):
|
||||
return ompi_coll_tuned_scatter_intra_dec_fixed (sbuf, scount, sdtype,
|
||||
rbuf, rcount, rdtype,
|
||||
root, comm);
|
||||
case (1):
|
||||
return ompi_coll_tuned_scatter_intra_basic_linear (sbuf, scount, sdtype,
|
||||
rbuf, rcount, rdtype,
|
||||
root, comm);
|
||||
case (2):
|
||||
return ompi_coll_tuned_scatter_intra_binomial(sbuf, scount, sdtype,
|
||||
rbuf, rcount, rdtype,
|
||||
root, comm);
|
||||
default:
|
||||
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
||||
"coll:tuned:scatter_intra_do_forced attempt to select algorithm %d when only 0-%d is valid?",
|
||||
comm->c_coll_selected_data->user_forced[SCATTER].algorithm,
|
||||
ompi_coll_tuned_forced_max_algorithms[SCATTER]));
|
||||
return (MPI_ERR_ARG);
|
||||
} /* switch */
|
||||
}
|
||||
|
||||
int
|
||||
ompi_coll_tuned_scatter_intra_do_this(void *sbuf, int scount,
|
||||
struct ompi_datatype_t *sdtype,
|
||||
void* rbuf, int rcount,
|
||||
struct ompi_datatype_t *rdtype,
|
||||
int root, struct ompi_communicator_t *comm,
|
||||
int algorithm, int faninout, int segsize)
|
||||
{
|
||||
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
||||
"coll:tuned:scatter_intra_do_this selected algorithm %d topo faninout %d segsize %d",
|
||||
algorithm, faninout, segsize));
|
||||
|
||||
switch (algorithm) {
|
||||
case (0):
|
||||
return ompi_coll_tuned_scatter_intra_dec_fixed (sbuf, scount, sdtype,
|
||||
rbuf, rcount, rdtype,
|
||||
root, comm);
|
||||
case (1):
|
||||
return ompi_coll_tuned_scatter_intra_basic_linear (sbuf, scount, sdtype,
|
||||
rbuf, rcount, rdtype,
|
||||
root, comm);
|
||||
case (2):
|
||||
return ompi_coll_tuned_scatter_intra_binomial(sbuf, scount, sdtype,
|
||||
rbuf, rcount, rdtype,
|
||||
root, comm);
|
||||
default:
|
||||
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
||||
"coll:tuned:scatter_intra_do_this attempt to select algorithm %d when only 0-%d is valid?",
|
||||
algorithm,
|
||||
ompi_coll_tuned_forced_max_algorithms[SCATTER]));
|
||||
return (MPI_ERR_ARG);
|
||||
} /* switch */
|
||||
}
|
||||
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