a25ce44dc1
* Don't need the 2 process case -- we'll send an extra message, but
at very little cost and less code is better.
* Use COMPLETE sends instead of STANDARD sends so that the connection
is fully established before we move on to the next connection. The
previous code was still causing minor connection flooding for huge
numbers of processes.
* mpi_preconnect_all now connects both OOB and MPI layers. There's
also mpi_preconnect_mpi and mpi_preconnect_oob should you want to
be more specific.
* Since we're only using the MCA parameters once at the beginning
of time, no need for global constants. Just do the quick param
lookup right before the parameter is needed. Save some of that
global variable space for the next guy.
Fixes trac:963
This commit was SVN r14553.
The following Trac tickets were found above:
Ticket 963 --> https://svn.open-mpi.org/trac/ompi/ticket/963
116 строки
3.7 KiB
C
116 строки
3.7 KiB
C
/*
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* Copyright (c) 2004-2005 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) 2004-2005 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 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2007 Los Alamos National Security, LLC. All rights
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* 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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/**
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* @file
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*
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* Interface into the MPI portion of the Open MPI Run Time Environment
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*/
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#ifndef OMPI_MPI_MPIRUNTIME_H
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#define OMPI_MPI_MPIRUNTIME_H
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#include "ompi_config.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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/** forward type declaration */
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struct ompi_communicator_t;
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/** forward type declaration */
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struct opal_thread_t;
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/* Global variables and symbols for the MPI layer */
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/** Is mpi initialized? */
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OMPI_DECLSPEC extern bool ompi_mpi_initialized;
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/** Has mpi been finalized? */
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OMPI_DECLSPEC extern bool ompi_mpi_finalized;
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/** Do we have multiple threads? */
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OMPI_DECLSPEC extern bool ompi_mpi_thread_multiple;
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/** Thread level requested to \c MPI_Init_thread() */
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OMPI_DECLSPEC extern int ompi_mpi_thread_requested;
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/** Thread level provided by Open MPI */
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OMPI_DECLSPEC extern int ompi_mpi_thread_provided;
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/** Identifier of the main thread */
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OMPI_DECLSPEC extern struct opal_thread_t *ompi_mpi_main_thread;
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/** Did we setup maffinity in MPI_INIT (and therefore need to shut
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it down during MPI_FINALIZE)? */
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OMPI_DECLSPEC extern bool ompi_mpi_maffinity_setup;
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/**
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* Initialize the Open MPI MPI environment
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*
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* @param argc argc, typically from main() (IN)
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* @param argv argv, typically from main() (IN)
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* @param requested Thread support that is requested (IN)
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* @param provided Thread support that is provided (OUT)
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*
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* @returns MPI_SUCCESS if successful
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* @returns Error code if unsuccessful
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*
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* Intialize all support code needed for MPI applications. This
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* function should only be called by MPI applications (including
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* singletons). If this function is called, ompi_init() and
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* ompi_rte_init() should *not* be called.
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*
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* It is permissable to pass in (0, NULL) for (argc, argv).
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*/
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int ompi_mpi_init(int argc, char **argv, int requested, int *provided);
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/**
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* Finalize the Open MPI MPI environment
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*
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* @returns MPI_SUCCESS if successful
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* @returns Error code if unsuccessful
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*
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* Should be called after all MPI functionality is complete (usually
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* during MPI_FINALIZE).
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*/
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int ompi_mpi_finalize(void);
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/**
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* Abort the processes of comm
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*/
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int ompi_mpi_abort(struct ompi_communicator_t* comm,
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int errcode, bool kill_remote_of_intercomm);
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/**
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* Wait for a TotalView-like debugger if asked.
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*/
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void ompi_mpi_wait_for_totalview(void);
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/**
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* Do a preconnect of MPI connections (i.e., force connections to
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* be made if they will be made).
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*/
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int ompi_init_preconnect_oob(void);
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int ompi_init_preconnect_mpi(void);
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif /* OMPI_MPI_MPIRUNTIME_H */
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