ee3517427e
Add a framework to support different types of threading models including user space thread packages such as Qthreads and argobot: https://github.com/pmodels/argobots https://github.com/Qthreads/qthreads The default threading model is pthreads. Alternate thread models are specificed at configure time using the --with-threads=X option. The framework is static. The theading model to use is selected at Open MPI configure/build time. mca/threads: implement Argobots threading layer config: fix thread configury - Add double quotations - Change Argobot to Argobots config: implement Argobots check If the poll time is too long, MPI hangs. This quick fix just sets it to 0, but it is not good for the Pthreads version. Need to find a good way to abstract it. Note that even 1 (= 1 millisecond) causes disastrous performance degradation. rework threads MCA framework configury It now works more like the ompi/mca/rte configury, modulo some edge items that are special for threading package linking, etc. qthreads module some argobots cleanup Signed-off-by: Noah Evans <noah.evans@gmail.com> Signed-off-by: Shintaro Iwasaki <siwasaki@anl.gov> Signed-off-by: Howard Pritchard <howardp@lanl.gov>
87 строки
2.7 KiB
C
87 строки
2.7 KiB
C
/*
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* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2006-2018 Cisco Systems, Inc. All rights reserved
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* Copyright (c) 2015-2017 Research Organization for Information Science
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* and Technology (RIST). All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <string.h>
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#include "opal/mca/threads/mutex.h"
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#include "opal/util/string_copy.h"
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/runtime/params.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/errhandler/errhandler.h"
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#include "ompi/totalview.h"
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#include "ompi/memchecker.h"
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#if OMPI_BUILD_MPI_PROFILING
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#if OPAL_HAVE_WEAK_SYMBOLS
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#pragma weak MPI_Comm_get_name = PMPI_Comm_get_name
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#endif
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#define MPI_Comm_get_name PMPI_Comm_get_name
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#endif
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static const char FUNC_NAME[] = "MPI_Comm_get_name";
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int MPI_Comm_get_name(MPI_Comm comm, char *name, int *length)
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{
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MEMCHECKER(
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memchecker_comm(comm);
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);
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OPAL_CR_NOOP_PROGRESS();
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if ( MPI_PARAM_CHECK ) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if ( ompi_comm_invalid ( comm ) )
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return OMPI_ERRHANDLER_INVOKE ( MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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if ( NULL == name || NULL == length )
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return OMPI_ERRHANDLER_INVOKE ( comm, MPI_ERR_ARG,
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FUNC_NAME);
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}
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OPAL_THREAD_LOCK(&(comm->c_lock));
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/* Note that MPI-2.1 requires:
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- terminating the string with a \0
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- name[*resultlen] == '\0'
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- and therefore (*resultlen) cannot be > (MPI_MAX_OBJECT_NAME-1)
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The Fortran API version will pad to the right if necessary.
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Note that comm->c_name is guaranteed to be \0-terminated and
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able to completely fit into MPI_MAX_OBJECT_NAME bytes (i.e.,
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name+\0). */
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if ( comm->c_flags & OMPI_COMM_NAMEISSET ) {
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opal_string_copy(name, comm->c_name, MPI_MAX_OBJECT_NAME);
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*length = (int) strlen(comm->c_name);
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} else {
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name[0] = '\0';
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*length = 0;
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}
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OPAL_THREAD_UNLOCK(&(comm->c_lock));
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return MPI_SUCCESS;
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}
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