568477ade8
- Allreduce algorithms:
- Recursive doubling is used for small messages (up to 10KB) and can be used for
both commutative and non-commutative operations.
Recursive doubling passed OCC, IMB-3.2, Intel (Allreduce_c, Allreduce_loc_c, and
Allreduce_user_c), mpi_test_suite (Allreduce MIN/MAX, and Allreduce MIN/MAX with
MPI_IN_PLACE) tests on TCP up to 36 nodes and MX up to 64 nodes.
- Ring algorithms performs well for larger messages but cannot be used for
non-commutative operations. It passed the same tests as recursive doubling, except
some of the non-commutative tests in Intel benchmarks Allreduce_loc_c and Allreduce_user_c
(which was expected).
- MPI_Allreduce with new decision function passed all of the tests mentioned above.
- Cleaning up coll_tuned_util. Moving isendrecv to static inline just like sendrecv.
This commit was SVN r13252.
131 строка
5.4 KiB
C
131 строка
5.4 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2007 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
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#ifndef MCA_COLL_TUNED_UTIL_EXPORT_H
|
|
#define MCA_COLL_TUNED_UTIL_EXPORT_H
|
|
|
|
#include "ompi_config.h"
|
|
|
|
#include "mpi.h"
|
|
#include "opal/mca/mca.h"
|
|
#include "ompi/datatype/datatype.h"
|
|
#include "ompi/mca/coll/coll.h"
|
|
#include "ompi/request/request.h"
|
|
#include "ompi/mca/pml/pml.h"
|
|
|
|
#if defined(c_plusplus) || defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* prototypes */
|
|
int ompi_coll_tuned_sendrecv_actual( void* sendbuf, int scount,
|
|
ompi_datatype_t* sdatatype,
|
|
int dest, int stag,
|
|
void* recvbuf, int rcount,
|
|
ompi_datatype_t* rdatatype,
|
|
int source, int rtag,
|
|
struct ompi_communicator_t* comm,
|
|
ompi_status_public_t* status );
|
|
|
|
|
|
/* inline functions */
|
|
|
|
static inline int
|
|
ompi_coll_tuned_sendrecv( void* sendbuf, int scount, ompi_datatype_t* sdatatype,
|
|
int dest, int stag,
|
|
void* recvbuf, int rcount, ompi_datatype_t* rdatatype,
|
|
int source, int rtag,
|
|
struct ompi_communicator_t* comm,
|
|
ompi_status_public_t* status, int myid )
|
|
{
|
|
if ((dest == myid) && (source == myid)) {
|
|
return (int) ompi_ddt_sndrcv(sendbuf, (int32_t) scount, sdatatype,
|
|
recvbuf, (int32_t) rcount, rdatatype);
|
|
}
|
|
return ompi_coll_tuned_sendrecv_actual (sendbuf, scount, sdatatype,
|
|
dest, stag,
|
|
recvbuf, rcount, rdatatype,
|
|
source, rtag, comm, status);
|
|
}
|
|
|
|
int
|
|
ompi_coll_tuned_sendrecv_actual_localcompleted( void* sendbuf, int scount,
|
|
ompi_datatype_t* sdatatype,
|
|
int dest, int stag,
|
|
void* recvbuf, int rcount,
|
|
ompi_datatype_t* rdatatype,
|
|
int source, int rtag,
|
|
struct ompi_communicator_t* comm,
|
|
ompi_status_public_t* status );
|
|
|
|
|
|
/* inline functions */
|
|
|
|
static inline int
|
|
ompi_coll_tuned_sendrecv_localcompleted( void* sendbuf, int scount,
|
|
ompi_datatype_t* sdatatype,
|
|
int dest, int stag,
|
|
void* recvbuf, int rcount,
|
|
ompi_datatype_t* rdatatype,
|
|
int source, int rtag,
|
|
struct ompi_communicator_t* comm,
|
|
ompi_status_public_t* status, int myid )
|
|
{
|
|
if ((dest == myid) && (source == myid)) {
|
|
return (int) ompi_ddt_sndrcv(sendbuf, (int32_t) scount, sdatatype,
|
|
recvbuf, (int32_t) rcount, rdatatype);
|
|
}
|
|
return ompi_coll_tuned_sendrecv_actual_localcompleted (sendbuf, scount,
|
|
sdatatype, dest,
|
|
stag,
|
|
recvbuf, rcount,
|
|
rdatatype,
|
|
source, rtag, comm,
|
|
status);
|
|
}
|
|
|
|
/* inline functions */
|
|
static inline int
|
|
ompi_coll_tuned_isendrecv( void* sendbuf, int scount, ompi_datatype_t* sdtype,
|
|
int dest, int stag, ompi_request_t** sreq,
|
|
void* recvbuf, int rcount, ompi_datatype_t* rdtype,
|
|
int source, int rtag, ompi_request_t** rreq,
|
|
struct ompi_communicator_t* comm ) {
|
|
int ret, line;
|
|
|
|
ret = MCA_PML_CALL(irecv(recvbuf, rcount, rdtype, source, rtag, comm, rreq));
|
|
if (MPI_SUCCESS != ret) { line = __LINE__; goto error_handler; }
|
|
|
|
ret = MCA_PML_CALL(isend(sendbuf, scount, sdtype, dest, stag,
|
|
MCA_PML_BASE_SEND_STANDARD, comm, sreq));
|
|
if (MPI_SUCCESS != ret) { line = __LINE__; goto error_handler; }
|
|
|
|
return MPI_SUCCESS;
|
|
error_handler:
|
|
OPAL_OUTPUT((ompi_coll_tuned_stream, "%s:%d\tError occurred %d\n",
|
|
__FILE__, line, ret));
|
|
return ret;
|
|
}
|
|
|
|
#if defined(c_plusplus) || defined(__cplusplus)
|
|
}
|
|
#endif
|
|
#endif /* MCA_COLL_TUNED_UTIL_EXPORT_H */
|
|
|
|
|