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/*
* 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);
}
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