d377a6b6f4
This code is the implementation of Software-base Performance Counters as described in the paper 'Using Software-Base Performance Counters to Expose Low-Level Open MPI Performance Information' in EuroMPI/USA '17 (http://icl.cs.utk.edu/news_pub/submissions/software-performance-counters.pdf). More practical usage information can be found here: https://github.com/davideberius/ompi/wiki/How-to-Use-Software-Based-Performance-Counters-(SPCs)-in-Open-MPI. All software events functions are put in macros that become no-ops when SOFTWARE_EVENTS_ENABLE is not defined. The internal timer units have been changed to cycles to avoid division operations which was a large source of overhead as discussed in the paper. Added a --with-spc configure option to enable SPCs in the Open MPI build. This defines SOFTWARE_EVENTS_ENABLE. Added an MCA parameter, mpi_spc_enable, for turning on specific counters. Added an MCA parameter, mpi_spc_dump_enabled, for turning on and off dumping SPC counters in MPI_Finalize. Added an SPC test and example. Signed-off-by: David Eberius <deberius@vols.utk.edu>
101 строка
3.4 KiB
C
101 строка
3.4 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
|
|
/*
|
|
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2018 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2008 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) 2006-2007 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
|
|
* reserved.
|
|
* Copyright (c) 2015-2017 Research Organization for Information Science
|
|
* and Technology (RIST). All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "ompi_config.h"
|
|
|
|
#include "ompi/mpi/c/bindings.h"
|
|
#include "ompi/runtime/params.h"
|
|
#include "ompi/communicator/communicator.h"
|
|
#include "ompi/errhandler/errhandler.h"
|
|
#include "ompi/mca/pml/pml.h"
|
|
#include "ompi/request/request.h"
|
|
#include "ompi/memchecker.h"
|
|
#include "ompi/runtime/ompi_spc.h"
|
|
|
|
#if OMPI_BUILD_MPI_PROFILING
|
|
#if OPAL_HAVE_WEAK_SYMBOLS
|
|
#pragma weak MPI_Isend = PMPI_Isend
|
|
#endif
|
|
#define MPI_Isend PMPI_Isend
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Isend";
|
|
|
|
|
|
int MPI_Isend(const void *buf, int count, MPI_Datatype type, int dest,
|
|
int tag, MPI_Comm comm, MPI_Request *request)
|
|
{
|
|
int rc = MPI_SUCCESS;
|
|
|
|
SPC_RECORD(OMPI_SPC_ISEND, 1);
|
|
|
|
MEMCHECKER(
|
|
memchecker_datatype(type);
|
|
memchecker_call(&opal_memchecker_base_isdefined, buf, count, type);
|
|
memchecker_comm(comm);
|
|
);
|
|
|
|
if ( MPI_PARAM_CHECK ) {
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
if (ompi_comm_invalid(comm)) {
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
|
|
} else if (count < 0) {
|
|
rc = MPI_ERR_COUNT;
|
|
} else if (MPI_DATATYPE_NULL == type || NULL == type) {
|
|
rc = MPI_ERR_TYPE;
|
|
} else if (tag < 0 || tag > mca_pml.pml_max_tag) {
|
|
rc = MPI_ERR_TAG;
|
|
} else if (ompi_comm_peer_invalid(comm, dest) &&
|
|
(MPI_PROC_NULL != dest)) {
|
|
rc = MPI_ERR_RANK;
|
|
} else if (request == NULL) {
|
|
rc = MPI_ERR_REQUEST;
|
|
} else {
|
|
OMPI_CHECK_DATATYPE_FOR_SEND(rc, type, count);
|
|
OMPI_CHECK_USER_BUFFER(rc, buf, type, count);
|
|
}
|
|
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
|
|
}
|
|
|
|
if (MPI_PROC_NULL == dest) {
|
|
*request = &ompi_request_empty;
|
|
return MPI_SUCCESS;
|
|
}
|
|
|
|
OPAL_CR_ENTER_LIBRARY();
|
|
|
|
/*
|
|
* today's MPI standard mandates the send buffer remains accessible during the send operation
|
|
* hence memchecker cannot mark buf as non accessible, but it might mark buf as read-only in
|
|
* order to trap end user errors. Unfortunatly valgrind does not support marking buffers as read-only,
|
|
* so there is pretty much nothing we can do here.
|
|
*/
|
|
|
|
rc = MCA_PML_CALL(isend(buf, count, type, dest, tag,
|
|
MCA_PML_BASE_SEND_STANDARD, comm, request));
|
|
OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
|
|
}
|
|
|
|
|