221 строка
12 KiB
C
221 строка
12 KiB
C
/*
|
|
* Copyright (c) 2004-2015 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2015 Research Organization for Information Science
|
|
* and Technology (RIST). All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "ompi_config.h"
|
|
|
|
#include "mpi.h"
|
|
#include "opal/util/bit_ops.h"
|
|
#include "ompi/constants.h"
|
|
#include "ompi/datatype/ompi_datatype.h"
|
|
#include "ompi/communicator/communicator.h"
|
|
#include "ompi/mca/coll/coll.h"
|
|
#include "ompi/mca/coll/base/coll_tags.h"
|
|
#include "ompi/mca/coll/base/coll_base_topo.h"
|
|
#include "ompi/mca/coll/base/coll_base_util.h"
|
|
#include "coll_tuned.h"
|
|
|
|
/* allgather algorithm variables */
|
|
static int coll_tuned_allgather_forced_algorithm = 0;
|
|
static int coll_tuned_allgather_segment_size = 0;
|
|
static int coll_tuned_allgather_tree_fanout;
|
|
static int coll_tuned_allgather_chain_fanout;
|
|
|
|
/* valid values for coll_tuned_allgather_forced_algorithm */
|
|
static mca_base_var_enum_value_t allgather_algorithms[] = {
|
|
{0, "ignore"},
|
|
{1, "linear"},
|
|
{2, "bruck"},
|
|
{3, "recursive_doubling"},
|
|
{4, "ring"},
|
|
{5, "neighbor"},
|
|
{6, "two_proc"},
|
|
{0, NULL}
|
|
};
|
|
|
|
/* 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_allgather_intra_check_forced_init(coll_tuned_force_algorithm_mca_param_indices_t *mca_param_indices)
|
|
{
|
|
mca_base_var_enum_t *new_enum;
|
|
int cnt;
|
|
|
|
for( cnt = 0; NULL != allgather_algorithms[cnt].string; cnt++ );
|
|
ompi_coll_tuned_forced_max_algorithms[ALLGATHER] = cnt;
|
|
|
|
(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
|
|
"allgather_algorithm_count",
|
|
"Number of allgather algorithms available",
|
|
MCA_BASE_VAR_TYPE_INT, NULL, 0,
|
|
MCA_BASE_VAR_FLAG_DEFAULT_ONLY,
|
|
OPAL_INFO_LVL_5,
|
|
MCA_BASE_VAR_SCOPE_CONSTANT,
|
|
&cnt);
|
|
|
|
/* MPI_T: This variable should eventually be bound to a communicator */
|
|
coll_tuned_allgather_forced_algorithm = 0;
|
|
(void) mca_base_var_enum_create("coll_tuned_allgather_algorithms", allgather_algorithms, &new_enum);
|
|
mca_param_indices->algorithm_param_index =
|
|
mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
|
|
"allgather_algorithm",
|
|
"Which allallgather algorithm is used. Can be locked down to choice of: 0 ignore, 1 basic linear, 2 bruck, 3 recursive doubling, 4 ring, 5 neighbor exchange, 6: two proc only.",
|
|
MCA_BASE_VAR_TYPE_INT, new_enum, 0, 0,
|
|
OPAL_INFO_LVL_5,
|
|
MCA_BASE_VAR_SCOPE_READONLY,
|
|
&coll_tuned_allgather_forced_algorithm);
|
|
OBJ_RELEASE(new_enum);
|
|
if (mca_param_indices->algorithm_param_index < 0) {
|
|
return mca_param_indices->algorithm_param_index;
|
|
}
|
|
|
|
coll_tuned_allgather_segment_size = 0;
|
|
mca_param_indices->segsize_param_index =
|
|
mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
|
|
"allgather_algorithm_segmentsize",
|
|
"Segment size in bytes used by default for allgather algorithms. Only has meaning if algorithm is forced and supports segmenting. 0 bytes means no segmentation. Currently, available algorithms do not support segmentation.",
|
|
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
|
|
OPAL_INFO_LVL_5,
|
|
MCA_BASE_VAR_SCOPE_READONLY,
|
|
&coll_tuned_allgather_segment_size);
|
|
|
|
coll_tuned_allgather_tree_fanout = ompi_coll_tuned_init_tree_fanout; /* get system wide default */
|
|
mca_param_indices->tree_fanout_param_index =
|
|
mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
|
|
"allgather_algorithm_tree_fanout",
|
|
"Fanout for n-tree used for allgather algorithms. Only has meaning if algorithm is forced and supports n-tree topo based operation. Currently, available algorithms do not support n-tree topologies.",
|
|
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
|
|
OPAL_INFO_LVL_5,
|
|
MCA_BASE_VAR_SCOPE_READONLY,
|
|
&coll_tuned_allgather_tree_fanout);
|
|
|
|
coll_tuned_allgather_chain_fanout = ompi_coll_tuned_init_chain_fanout; /* get system wide default */
|
|
mca_param_indices->chain_fanout_param_index =
|
|
mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
|
|
"allgather_algorithm_chain_fanout",
|
|
"Fanout for chains used for allgather algorithms. Only has meaning if algorithm is forced and supports chain topo based operation. Currently, available algorithms do not support chain topologies.",
|
|
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
|
|
OPAL_INFO_LVL_5,
|
|
MCA_BASE_VAR_SCOPE_READONLY,
|
|
&coll_tuned_allgather_chain_fanout);
|
|
|
|
return (MPI_SUCCESS);
|
|
}
|
|
|
|
int ompi_coll_tuned_allgather_intra_do_forced(const void *sbuf, int scount,
|
|
struct ompi_datatype_t *sdtype,
|
|
void* rbuf, int rcount,
|
|
struct ompi_datatype_t *rdtype,
|
|
struct ompi_communicator_t *comm,
|
|
mca_coll_base_module_t *module)
|
|
{
|
|
mca_coll_tuned_module_t *tuned_module = (mca_coll_tuned_module_t*) module;
|
|
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:allgather_intra_do_forced selected algorithm %d",
|
|
tuned_module->user_forced[ALLGATHER].algorithm));
|
|
|
|
switch (tuned_module->user_forced[ALLGATHER].algorithm) {
|
|
case (0):
|
|
return ompi_coll_tuned_allgather_intra_dec_fixed(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (1):
|
|
return ompi_coll_base_allgather_intra_basic_linear(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (2):
|
|
return ompi_coll_base_allgather_intra_bruck(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (3):
|
|
return ompi_coll_base_allgather_intra_recursivedoubling(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (4):
|
|
return ompi_coll_base_allgather_intra_ring(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (5):
|
|
return ompi_coll_base_allgather_intra_neighborexchange(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (6):
|
|
return ompi_coll_base_allgather_intra_two_procs(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
} /* switch */
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:allgather_intra_do_forced attempt to select algorithm %d when only 0-%d is valid?",
|
|
tuned_module->user_forced[ALLGATHER].algorithm,
|
|
ompi_coll_tuned_forced_max_algorithms[ALLGATHER]));
|
|
return (MPI_ERR_ARG);
|
|
}
|
|
|
|
|
|
int ompi_coll_tuned_allgather_intra_do_this(const void *sbuf, int scount,
|
|
struct ompi_datatype_t *sdtype,
|
|
void* rbuf, int rcount,
|
|
struct ompi_datatype_t *rdtype,
|
|
struct ompi_communicator_t *comm,
|
|
mca_coll_base_module_t *module,
|
|
int algorithm, int faninout, int segsize)
|
|
{
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:allgather_intra_do_this selected algorithm %d topo faninout %d segsize %d",
|
|
algorithm, faninout, segsize));
|
|
|
|
switch (algorithm) {
|
|
case (0):
|
|
return ompi_coll_tuned_allgather_intra_dec_fixed(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (1):
|
|
return ompi_coll_base_allgather_intra_basic_linear(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (2):
|
|
return ompi_coll_base_allgather_intra_bruck(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (3):
|
|
return ompi_coll_base_allgather_intra_recursivedoubling(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (4):
|
|
return ompi_coll_base_allgather_intra_ring(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (5):
|
|
return ompi_coll_base_allgather_intra_neighborexchange(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
case (6):
|
|
return ompi_coll_base_allgather_intra_two_procs(sbuf, scount, sdtype,
|
|
rbuf, rcount, rdtype,
|
|
comm, module);
|
|
} /* switch */
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:allgather_intra_do_this attempt to select algorithm %d when only 0-%d is valid?",
|
|
algorithm, ompi_coll_tuned_forced_max_algorithms[ALLGATHER]));
|
|
return (MPI_ERR_ARG);
|
|
}
|