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>
108 строки
4.0 KiB
C
108 строки
4.0 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) 2007 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2012 Oak Ridge National Laboratory. All rights reserved.
|
|
* Copyright (c) 2013 Los Alamos National Security, LLC. 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 <stdio.h>
|
|
|
|
#include "ompi/mpi/c/bindings.h"
|
|
#include "ompi/runtime/params.h"
|
|
#include "ompi/communicator/communicator.h"
|
|
#include "ompi/errhandler/errhandler.h"
|
|
#include "ompi/datatype/ompi_datatype.h"
|
|
#include "ompi/memchecker.h"
|
|
#include "ompi/runtime/ompi_spc.h"
|
|
|
|
#if OMPI_BUILD_MPI_PROFILING
|
|
#if OPAL_HAVE_WEAK_SYMBOLS
|
|
#pragma weak MPI_Iallgather = PMPI_Iallgather
|
|
#endif
|
|
#define MPI_Iallgather PMPI_Iallgather
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Iallgather";
|
|
|
|
|
|
int MPI_Iallgather(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
|
|
void *recvbuf, int recvcount, MPI_Datatype recvtype,
|
|
MPI_Comm comm, MPI_Request *request)
|
|
{
|
|
int err;
|
|
|
|
SPC_RECORD(OMPI_SPC_IALLGATHER, 1);
|
|
|
|
MEMCHECKER(
|
|
int rank;
|
|
ptrdiff_t ext;
|
|
|
|
rank = ompi_comm_rank(comm);
|
|
ompi_datatype_type_extent(recvtype, &ext);
|
|
|
|
memchecker_datatype(recvtype);
|
|
memchecker_comm(comm);
|
|
/* check whether the actual send buffer is defined. */
|
|
if (MPI_IN_PLACE == sendbuf) {
|
|
memchecker_call(&opal_memchecker_base_isdefined,
|
|
(char *)(recvbuf)+rank*ext,
|
|
recvcount, recvtype);
|
|
} else {
|
|
memchecker_datatype(sendtype);
|
|
memchecker_call(&opal_memchecker_base_isdefined, sendbuf, sendcount, sendtype);
|
|
}
|
|
/* check whether the receive buffer is addressable. */
|
|
memchecker_call(&opal_memchecker_base_isaddressable, recvbuf, recvcount, recvtype);
|
|
);
|
|
|
|
if (MPI_PARAM_CHECK) {
|
|
|
|
/* Unrooted operation -- same checks for all ranks on both
|
|
intracommunicators and intercommunicators */
|
|
|
|
err = MPI_SUCCESS;
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
if (ompi_comm_invalid(comm)) {
|
|
OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
|
|
} else if (MPI_DATATYPE_NULL == recvtype || NULL == recvtype) {
|
|
err = MPI_ERR_TYPE;
|
|
} else if (recvcount < 0) {
|
|
err = MPI_ERR_COUNT;
|
|
} else if ((MPI_IN_PLACE == sendbuf && OMPI_COMM_IS_INTER(comm)) ||
|
|
MPI_IN_PLACE == recvbuf) {
|
|
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
|
|
} else if (MPI_IN_PLACE != sendbuf) {
|
|
OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
|
|
}
|
|
OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
|
|
}
|
|
|
|
OPAL_CR_ENTER_LIBRARY();
|
|
|
|
/* Invoke the coll component to perform the back-end operation */
|
|
err = comm->c_coll->coll_iallgather(sendbuf, sendcount, sendtype,
|
|
recvbuf, recvcount, recvtype, comm,
|
|
request, comm->c_coll->coll_iallgather_module);
|
|
|
|
OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
|
|
}
|