11b375f8b5
NEGATIVE_RETURNS from _reg_int() because those are not always checked. So replace them with real if() checks. This commit was SVN r20195.
327 строки
13 KiB
C
327 строки
13 KiB
C
/*
|
|
* 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 (c) 2008 Sun Microsystems, Inc. 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 "ompi/mca/coll/coll.h"
|
|
#include "ompi/mca/coll/base/coll_tags.h"
|
|
#include "ompi/mca/pml/pml.h"
|
|
#include "ompi/op/op.h"
|
|
#include "coll_tuned.h"
|
|
#include "coll_tuned_topo.h"
|
|
#include "coll_tuned_util.h"
|
|
|
|
int
|
|
ompi_coll_tuned_alltoallv_intra_pairwise(void *sbuf, int *scounts, int *sdisps,
|
|
struct ompi_datatype_t *sdtype,
|
|
void* rbuf, int *rcounts, int *rdisps,
|
|
struct ompi_datatype_t *rdtype,
|
|
struct ompi_communicator_t *comm,
|
|
mca_coll_base_module_t *module)
|
|
{
|
|
int line = -1, err = 0;
|
|
int rank, size, step;
|
|
int sendto, recvfrom;
|
|
void *psnd, *prcv;
|
|
ptrdiff_t sext, rext;
|
|
|
|
size = ompi_comm_size(comm);
|
|
rank = ompi_comm_rank(comm);
|
|
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:alltoallv_intra_pairwise rank %d", rank));
|
|
|
|
ompi_ddt_type_extent(sdtype, &sext);
|
|
ompi_ddt_type_extent(rdtype, &rext);
|
|
|
|
psnd = ((char *) sbuf) + (sdisps[rank] * sext);
|
|
prcv = ((char *) rbuf) + (rdisps[rank] * rext);
|
|
|
|
if (0 != scounts[rank]) {
|
|
err = ompi_ddt_sndrcv(psnd, scounts[rank], sdtype,
|
|
prcv, rcounts[rank], rdtype);
|
|
if (MPI_SUCCESS != err) {
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* If only one process, we're done. */
|
|
if (1 == size) {
|
|
return MPI_SUCCESS;
|
|
}
|
|
|
|
/* Perform pairwise exchange starting from 1 since local exhange is done */
|
|
for (step = 1; step < size + 1; step++) {
|
|
|
|
/* Determine sender and receiver for this step. */
|
|
sendto = (rank + step) % size;
|
|
recvfrom = (rank + size - step) % size;
|
|
|
|
/* Determine sending and receiving locations */
|
|
psnd = (char*)sbuf + sdisps[sendto] * sext;
|
|
prcv = (char*)rbuf + rdisps[recvfrom] * rext;
|
|
|
|
/* send and receive */
|
|
err = ompi_coll_tuned_sendrecv( psnd, scounts[sendto], sdtype, sendto,
|
|
MCA_COLL_BASE_TAG_ALLTOALLV,
|
|
prcv, rcounts[recvfrom], rdtype, recvfrom,
|
|
MCA_COLL_BASE_TAG_ALLTOALLV,
|
|
comm, MPI_STATUS_IGNORE, rank);
|
|
if (err != MPI_SUCCESS) { line = __LINE__; goto err_hndl; }
|
|
}
|
|
|
|
return MPI_SUCCESS;
|
|
|
|
err_hndl:
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"%s:%4d\tError occurred %d, rank %2d", __FILE__, line,
|
|
err, rank));
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Linear functions are copied from the basic coll module. For
|
|
* some small number of nodes and/or small data sizes they are just as
|
|
* fast as tuned/tree based segmenting operations and as such may be
|
|
* selected by the decision functions. These are copied into this module
|
|
* due to the way we select modules in V1. i.e. in V2 we will handle this
|
|
* differently and so will not have to duplicate code.
|
|
* GEF Oct05 after asking Jeff.
|
|
*/
|
|
int
|
|
ompi_coll_tuned_alltoallv_intra_basic_linear(void *sbuf, int *scounts, int *sdisps,
|
|
struct ompi_datatype_t *sdtype,
|
|
void *rbuf, int *rcounts, int *rdisps,
|
|
struct ompi_datatype_t *rdtype,
|
|
struct ompi_communicator_t *comm,
|
|
mca_coll_base_module_t *module)
|
|
{
|
|
int i, size, rank, err;
|
|
char *psnd, *prcv;
|
|
int nreqs;
|
|
ptrdiff_t sext, rext;
|
|
MPI_Request *preq;
|
|
mca_coll_tuned_module_t *tuned_module = (mca_coll_tuned_module_t*) module;
|
|
mca_coll_tuned_comm_t *data = tuned_module->tuned_data;
|
|
|
|
size = ompi_comm_size(comm);
|
|
rank = ompi_comm_rank(comm);
|
|
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:alltoallv_intra_basic_linear rank %d", rank));
|
|
|
|
ompi_ddt_type_extent(sdtype, &sext);
|
|
ompi_ddt_type_extent(rdtype, &rext);
|
|
|
|
/* Simple optimization - handle send to self first */
|
|
psnd = ((char *) sbuf) + (sdisps[rank] * sext);
|
|
prcv = ((char *) rbuf) + (rdisps[rank] * rext);
|
|
if (0 != scounts[rank]) {
|
|
err = ompi_ddt_sndrcv(psnd, scounts[rank], sdtype,
|
|
prcv, rcounts[rank], rdtype);
|
|
if (MPI_SUCCESS != err) {
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* If only one process, we're done. */
|
|
if (1 == size) {
|
|
return MPI_SUCCESS;
|
|
}
|
|
|
|
/* Now, initiate all send/recv to/from others. */
|
|
nreqs = 0;
|
|
preq = data->mcct_reqs;
|
|
|
|
/* Post all receives first */
|
|
for (i = 0; i < size; ++i) {
|
|
if (i == rank || 0 == rcounts[i]) {
|
|
continue;
|
|
}
|
|
|
|
prcv = ((char *) rbuf) + (rdisps[i] * rext);
|
|
err = MCA_PML_CALL(irecv_init(prcv, rcounts[i], rdtype,
|
|
i, MCA_COLL_BASE_TAG_ALLTOALLV, comm,
|
|
preq++));
|
|
++nreqs;
|
|
if (MPI_SUCCESS != err) {
|
|
ompi_coll_tuned_free_reqs(data->mcct_reqs, nreqs);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* Now post all sends */
|
|
for (i = 0; i < size; ++i) {
|
|
if (i == rank || 0 == scounts[i]) {
|
|
continue;
|
|
}
|
|
|
|
psnd = ((char *) sbuf) + (sdisps[i] * sext);
|
|
err = MCA_PML_CALL(isend_init(psnd, scounts[i], sdtype,
|
|
i, MCA_COLL_BASE_TAG_ALLTOALLV,
|
|
MCA_PML_BASE_SEND_STANDARD, comm,
|
|
preq++));
|
|
++nreqs;
|
|
if (MPI_SUCCESS != err) {
|
|
ompi_coll_tuned_free_reqs(data->mcct_reqs, nreqs);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* Start your engines. This will never return an error. */
|
|
MCA_PML_CALL(start(nreqs, data->mcct_reqs));
|
|
|
|
/* Wait for them all. If there's an error, note that we don't care
|
|
* what the error was -- just that there *was* an error. The PML
|
|
* will finish all requests, even if one or more of them fail.
|
|
* i.e., by the end of this call, all the requests are free-able.
|
|
* So free them anyway -- even if there was an error, and return the
|
|
* error after we free everything. */
|
|
err = ompi_request_wait_all(nreqs, data->mcct_reqs,
|
|
MPI_STATUSES_IGNORE);
|
|
|
|
/* Free the requests. */
|
|
ompi_coll_tuned_free_reqs(data->mcct_reqs, nreqs);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* 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_alltoallv_intra_check_forced_init(coll_tuned_force_algorithm_mca_param_indices_t
|
|
*mca_param_indices)
|
|
{
|
|
int max_alg = 2, requested_alg;
|
|
|
|
ompi_coll_tuned_forced_max_algorithms[ALLTOALLV] = max_alg;
|
|
|
|
mca_base_param_reg_int (&mca_coll_tuned_component.super.collm_version,
|
|
"alltoallv_algorithm_count",
|
|
"Number of alltoallv 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,
|
|
"alltoallv_algorithm",
|
|
"Which alltoallv algorithm is used. "
|
|
"Can be locked down to choice of: 0 ignore, "
|
|
"1 basic linear, 2 pairwise.",
|
|
false, false, 0, NULL);
|
|
if (mca_param_indices->algorithm_param_index < 0) {
|
|
return mca_param_indices->algorithm_param_index;
|
|
}
|
|
mca_base_param_lookup_int(mca_param_indices->algorithm_param_index, &(requested_alg));
|
|
if (0 > requested_alg || requested_alg > max_alg) {
|
|
if (0 == ompi_comm_rank( MPI_COMM_WORLD)) {
|
|
opal_output(0, "Alltoallv 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);
|
|
}
|
|
|
|
return (MPI_SUCCESS);
|
|
}
|
|
|
|
|
|
|
|
int ompi_coll_tuned_alltoallv_intra_do_forced(void *sbuf, int *scounts, int *sdisps,
|
|
struct ompi_datatype_t *sdtype,
|
|
void* rbuf, int *rcounts, int *rdisps,
|
|
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;
|
|
mca_coll_tuned_comm_t *data = tuned_module->tuned_data;
|
|
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:alltoallv_intra_do_forced selected algorithm %d",
|
|
data->user_forced[ALLTOALLV].algorithm));
|
|
|
|
switch (data->user_forced[ALLTOALLV].algorithm) {
|
|
case (0):
|
|
return ompi_coll_tuned_alltoallv_intra_dec_fixed(sbuf, scounts, sdisps, sdtype,
|
|
rbuf, rcounts, rdisps, rdtype,
|
|
comm, module);
|
|
case (1):
|
|
return ompi_coll_tuned_alltoallv_intra_basic_linear(sbuf, scounts, sdisps, sdtype,
|
|
rbuf, rcounts, rdisps, rdtype,
|
|
comm, module);
|
|
case (2):
|
|
return ompi_coll_tuned_alltoallv_intra_pairwise(sbuf, scounts, sdisps, sdtype,
|
|
rbuf, rcounts, rdisps, rdtype,
|
|
comm, module);
|
|
default:
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:alltoallv_intra_do_forced attempt to "
|
|
"select algorithm %d when only 0-%d is valid.",
|
|
data->user_forced[ALLTOALLV].algorithm,
|
|
ompi_coll_tuned_forced_max_algorithms[ALLTOALLV]));
|
|
return (MPI_ERR_ARG);
|
|
}
|
|
}
|
|
|
|
/* If the user selects dynamic rules and specifies the algorithm to
|
|
* use, then this function is called. */
|
|
int ompi_coll_tuned_alltoallv_intra_do_this(void *sbuf, int *scounts, int *sdisps,
|
|
struct ompi_datatype_t *sdtype,
|
|
void* rbuf, int *rcounts, int *rdisps,
|
|
struct ompi_datatype_t *rdtype,
|
|
struct ompi_communicator_t *comm,
|
|
mca_coll_base_module_t *module,
|
|
int algorithm)
|
|
{
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:alltoallv_intra_do_this selected algorithm %d ",
|
|
algorithm));
|
|
|
|
switch (algorithm) {
|
|
case (0):
|
|
return ompi_coll_tuned_alltoallv_intra_dec_fixed(sbuf, scounts, sdisps, sdtype,
|
|
rbuf, rcounts, rdisps, rdtype,
|
|
comm, module);
|
|
case (1):
|
|
return ompi_coll_tuned_alltoallv_intra_basic_linear(sbuf, scounts, sdisps, sdtype,
|
|
rbuf, rcounts, rdisps, rdtype,
|
|
comm, module);
|
|
case (2):
|
|
return ompi_coll_tuned_alltoallv_intra_pairwise(sbuf, scounts, sdisps, sdtype,
|
|
rbuf, rcounts, rdisps, rdtype,
|
|
comm, module);
|
|
default:
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream,
|
|
"coll:tuned:alltoall_intra_do_this attempt to select "
|
|
"algorithm %d when only 0-%d is valid.",
|
|
algorithm, ompi_coll_tuned_forced_max_algorithms[ALLTOALLV]));
|
|
return (MPI_ERR_ARG);
|
|
}
|
|
}
|