/* * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana * University Research and Technology * Corporation. All rights reserved. * Copyright (c) 2004-2006 The University of Tennessee and The University * of Tennessee Research Foundation. All rights * reserved. * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, * University of Stuttgart. All rights reserved. * Copyright (c) 2004-2005 The Regents of the University of California. * All rights reserved. * $COPYRIGHT$ * * Additional copyrights may follow * * $HEADER$ */ #include "ompi_config.h" #include "mpi.h" #include "ompi/constants.h" #include "ompi/datatype/datatype.h" #include "ompi/communicator/communicator.h" #include "opal/mca/base/mca_base_param.h" #include "ompi/mca/coll/base/base.h" #include "ompi/mca/coll/coll.h" #include "ompi/mca/coll/base/coll_tags.h" #include "coll_tuned.h" #include "ompi/mca/pml/pml.h" #include "opal/util/bit_ops.h" #include "coll_tuned.h" /* * Notes on evaluation rules and ordering * * The order is: * use file based rules if presented (-coll_tuned_dynamic_rules_filename = rules) * Else * use forced rules (-coll_tuned_dynamic_ALG_intra_algorithm = algorithm-number) * Else * use fixed (compiled) rule set (or nested ifs) * */ /* * allreduce_intra * * Function: - allreduce using other MPI collectives * Accepts: - same as MPI_Allreduce() * Returns: - MPI_SUCCESS or error code */ int ompi_coll_tuned_allreduce_intra_dec_dynamic (void *sbuf, void *rbuf, int count, struct ompi_datatype_t *dtype, struct ompi_op_t *op, struct ompi_communicator_t *comm) { OPAL_OUTPUT((ompi_coll_tuned_stream, "ompi_coll_tuned_allreduce_intra_dec_dynamic")); /* check to see if we have some filebased rules */ if (comm->c_coll_selected_data->com_rules[ALLREDUCE]) { /* we do, so calc the message size or what ever we need and use this for the evaluation */ int alg, faninout, segsize; size_t dsize; ompi_ddt_type_size (dtype, &dsize); dsize *= count; alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[ALLREDUCE], dsize, &faninout, &segsize); if (alg) { /* we have found a valid choice from the file based rules for this message size */ return ompi_coll_tuned_allreduce_intra_do_this (sbuf, rbuf, count, dtype, op, comm, alg, faninout, segsize); } /* found a method */ } /*end if any com rules to check */ if (comm->c_coll_selected_data->user_forced[ALLREDUCE].algorithm) { return ompi_coll_tuned_allreduce_intra_do_forced (sbuf, rbuf, count, dtype, op, comm); } return ompi_coll_tuned_allreduce_intra_dec_fixed (sbuf, rbuf, count, dtype, op, comm); } /* * alltoall_intra_dec * * Function: - seletects alltoall algorithm to use * Accepts: - same arguments as MPI_Alltoall() * Returns: - MPI_SUCCESS or error code (passed from the bcast implementation) */ int ompi_coll_tuned_alltoall_intra_dec_dynamic(void *sbuf, int scount, struct ompi_datatype_t *sdtype, void* rbuf, int rcount, struct ompi_datatype_t *rdtype, struct ompi_communicator_t *comm) { OPAL_OUTPUT((ompi_coll_tuned_stream, "ompi_coll_tuned_alltoall_intra_dec_dynamic")); /* check to see if we have some filebased rules */ if (comm->c_coll_selected_data->com_rules[ALLTOALL]) { /* we do, so calc the message size or what ever we need and use this for the evaluation */ int comsize; int alg, faninout, segsize; size_t dsize; ompi_ddt_type_size (sdtype, &dsize); comsize = ompi_comm_size(comm); dsize *= comsize * scount; alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[ALLTOALL], dsize, &faninout, &segsize); if (alg) { /* we have found a valid choice from the file based rules for this message size */ return ompi_coll_tuned_alltoall_intra_do_this (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm, alg, faninout, segsize); } /* found a method */ } /*end if any com rules to check */ if (comm->c_coll_selected_data->user_forced[ALLTOALL].algorithm) { return ompi_coll_tuned_alltoall_intra_do_forced (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm); } return ompi_coll_tuned_alltoall_intra_dec_fixed (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm); } /* * barrier_intra_dec * * Function: - seletects barrier algorithm to use * Accepts: - same arguments as MPI_Barrier() * Returns: - MPI_SUCCESS or error code (passed from the barrier implementation) */ int ompi_coll_tuned_barrier_intra_dec_dynamic(struct ompi_communicator_t *comm) { OPAL_OUTPUT((ompi_coll_tuned_stream,"ompi_coll_tuned_barrier_intra_dec_dynamic")); /* check to see if we have some filebased rules */ if (comm->c_coll_selected_data->com_rules[BARRIER]) { /* we do, so calc the message size or what ever we need and use this for the evaluation */ int alg, faninout, segsize; alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[BARRIER], 0, &faninout, &segsize); if (alg) { /* we have found a valid choice from the file based rules for this message size */ return ompi_coll_tuned_barrier_intra_do_this (comm, alg, faninout, segsize); } /* found a method */ } /*end if any com rules to check */ if (comm->c_coll_selected_data->user_forced[BARRIER].algorithm) { return ompi_coll_tuned_barrier_intra_do_forced (comm); } return ompi_coll_tuned_barrier_intra_dec_fixed (comm); } /* * bcast_intra_dec * * Function: - seletects broadcast algorithm to use * Accepts: - same arguments as MPI_Bcast() * Returns: - MPI_SUCCESS or error code (passed from the bcast implementation) */ int ompi_coll_tuned_bcast_intra_dec_dynamic(void *buff, int count, struct ompi_datatype_t *datatype, int root, struct ompi_communicator_t *comm) { OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:bcast_intra_dec_dynamic")); /* check to see if we have some filebased rules */ if (comm->c_coll_selected_data->com_rules[BCAST]) { /* we do, so calc the message size or what ever we need and use this for the evaluation */ int alg, faninout, segsize; size_t dsize; ompi_ddt_type_size (datatype, &dsize); dsize *= count; alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[BCAST], dsize, &faninout, &segsize); if (alg) { /* we have found a valid choice from the file based rules for this message size */ return ompi_coll_tuned_bcast_intra_do_this (buff, count, datatype, root, comm, alg, faninout, segsize); } /* found a method */ } /*end if any com rules to check */ if (comm->c_coll_selected_data->user_forced[BCAST].algorithm) { return ompi_coll_tuned_bcast_intra_do_forced (buff, count, datatype, root, comm); } return ompi_coll_tuned_bcast_intra_dec_fixed (buff, count, datatype, root, comm); } /* * reduce_intra_dec * * Function: - seletects reduce algorithm to use * Accepts: - same arguments as MPI_reduce() * Returns: - MPI_SUCCESS or error code (passed from the reduce implementation) * */ int ompi_coll_tuned_reduce_intra_dec_dynamic( void *sendbuf, void *recvbuf, int count, struct ompi_datatype_t* datatype, struct ompi_op_t* op, int root, struct ompi_communicator_t* comm) { OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:reduce_intra_dec_dynamic")); /* check to see if we have some filebased rules */ if (comm->c_coll_selected_data->com_rules[REDUCE]) { /* we do, so calc the message size or what ever we need and use this for the evaluation */ int alg, faninout, segsize; size_t dsize; ompi_ddt_type_size (datatype, &dsize); dsize *= count; alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[REDUCE], dsize, &faninout, &segsize); if (alg) { /* we have found a valid choice from the file based rules for this message size */ return ompi_coll_tuned_reduce_intra_do_this (sendbuf, recvbuf, count, datatype, op, root, comm, alg, faninout, segsize); } /* found a method */ } /*end if any com rules to check */ if (comm->c_coll_selected_data->user_forced[REDUCE].algorithm) { return ompi_coll_tuned_reduce_intra_do_forced (sendbuf, recvbuf, count, datatype, op, root, comm); } return ompi_coll_tuned_reduce_intra_dec_fixed (sendbuf, recvbuf, count, datatype, op, root, comm); } /* * allgather_intra_dec * * Function: - seletects allgather algorithm to use * Accepts: - same arguments as MPI_Allgather() * Returns: - MPI_SUCCESS or error code (passed from the selected * allgather function). */ int ompi_coll_tuned_allgather_intra_dec_dynamic(void *sbuf, int scount, struct ompi_datatype_t *sdtype, void* rbuf, int rcount, struct ompi_datatype_t *rdtype, struct ompi_communicator_t *comm) { OPAL_OUTPUT((ompi_coll_tuned_stream, "ompi_coll_tuned_allgather_intra_dec_dynamic")); if (comm->c_coll_selected_data->com_rules[ALLGATHER]) { /* We have file based rules: - calculate message size and other necessary information */ int comsize; int alg, faninout, segsize; size_t dsize; ompi_ddt_type_size (sdtype, &dsize); comsize = ompi_comm_size(comm); dsize *= comsize * scount; alg = ompi_coll_tuned_get_target_method_params (comm->c_coll_selected_data->com_rules[ALLGATHER], dsize, &faninout, &segsize); if (alg) { /* we have found a valid choice from the file based rules for this message size */ return ompi_coll_tuned_allgather_intra_do_this (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm, alg, faninout, segsize); } } /* We do not have file based rules */ if (comm->c_coll_selected_data->user_forced[ALLGATHER].algorithm) { /* User-forced algorithm */ return ompi_coll_tuned_allgather_intra_do_forced (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm); } /* Use default decision */ return ompi_coll_tuned_allgather_intra_dec_fixed (sbuf, scount, sdtype, rbuf, rcount, rdtype, comm); }