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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) 2004-2009 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 "coll_tuned.h"
#include "mpi.h"
#include "ompi/constants.h"
#include "ompi/datatype/ompi_datatype.h"
#include "ompi/communicator/communicator.h"
#include "ompi/mca/coll/base/coll_tags.h"
#include "ompi/mca/pml/pml.h"
#include "coll_tuned_util.h"
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 )
{ /* post receive first, then send, then waitall... should be fast (I hope) */
int err, line = 0;
ompi_request_t* reqs[2];
ompi_status_public_t statuses[2];
/* post new irecv */
err = MCA_PML_CALL(irecv( recvbuf, rcount, rdatatype, source, rtag,
comm, &reqs[0]));
if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
/* send data to children */
err = MCA_PML_CALL(isend( sendbuf, scount, sdatatype, dest, stag,
MCA_PML_BASE_SEND_STANDARD, comm, &reqs[1]));
if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
err = ompi_request_wait_all( 2, reqs, statuses );
if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler_waitall; }
if (MPI_STATUS_IGNORE != status) {
*status = statuses[0];
}
return (MPI_SUCCESS);
error_handler_waitall:
/* As we use wait_all we will get MPI_ERR_IN_STATUS which is not an error
* code that we can propagate up the stack. Instead, look for the real
* error code from the MPI_ERROR in the status.
*/
if( MPI_ERR_IN_STATUS == err ) {
/* At least we know he error was detected during the wait_all */
int err_index = 0;
if( MPI_SUCCESS != statuses[1].MPI_ERROR ) {
err_index = 1;
}
if (MPI_STATUS_IGNORE != status) {
*status = statuses[err_index];
}
err = statuses[err_index].MPI_ERROR;
OPAL_OUTPUT ((ompi_coll_tuned_stream, "%s:%d: Error %d occurred (req index %d)\n",
__FILE__, line, err, err_index));
} else {
error_handler:
/* Error discovered during the posting of the irecv or isend,
* and no status is available.
*/
OPAL_OUTPUT ((ompi_coll_tuned_stream, "%s:%d: Error %d occurred\n",
__FILE__, line, err));
if (MPI_STATUS_IGNORE != status) {
status->MPI_ERROR = err;
}
}
return (err);
}
/*
* localcompleted version that makes sure the send has completed locally
* Currently this is a sync call, but will change to locally completed
* version when available
*/
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 )
{ /* post receive first, then [local] sync send, then wait... should be fast (I hope) */
int err, line = 0;
ompi_request_t* req[2];
ompi_status_public_t statuses[2];
/* post new irecv */
err = MCA_PML_CALL(irecv( recvbuf, rcount, rdatatype, source, rtag,
comm, &(req[0])));
if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
/* send data to children */
err = MCA_PML_CALL(isend( sendbuf, scount, sdatatype, dest, stag,
MCA_PML_BASE_SEND_SYNCHRONOUS, comm, &(req[1])));
if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
err = ompi_request_wait_all( 2, req, statuses );
if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
if (MPI_STATUS_IGNORE != status) {
*status = statuses[0];
}
return (MPI_SUCCESS);
error_handler:
/* As we use wait_all we will get MPI_ERR_IN_STATUS which is not an error
* code that we can propagate up the stack. Instead, look for the real
* error code from the MPI_ERROR in the status.
*/
if( MPI_ERR_IN_STATUS == err ) {
int err_index = 0;
if( MPI_SUCCESS != statuses[1].MPI_ERROR ) {
err_index = 1;
}
if (MPI_STATUS_IGNORE != status) {
*status = statuses[err_index];
}
err = statuses[err_index].MPI_ERROR;
OPAL_OUTPUT ((ompi_coll_tuned_stream, "%s:%d: Error %d occurred (req index %d)\n",
__FILE__,line,err, err_index));
} else {
OPAL_OUTPUT ((ompi_coll_tuned_stream, "%s:%d: Error %d occurred\n",
__FILE__,line,err));
if (MPI_STATUS_IGNORE != status) {
status->MPI_ERROR = err;
}
}
return (err);
}
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