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MPI_Win_wait(3OpenMPI)                                                                MPI_Win_wait(3OpenMPI)



NAME
       MPI_Win_wait - Completes an RMA exposure epoch started by a call to MPI_Win_post on win


SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Win_wait(MPI_Win win)


Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_WIN_WAIT( WIN, IERROR)
            INTEGER  WIN, IERROR


C++ Syntax
       #include <mpi.h>
       void MPI::Win::Wait() const


INPUT PARAMETERS
       win       Window object (handle).


OUTPUT PARAMETERS
       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPI_Win_wait  is  a  one-sided  MPI communication synchronization call that completes an RMA exposure
       epoch started by a call to MPI_Win_post on win. This  call  matches  calls  to  MPI_Win_complete(win)
       issued by each of the processes that were granted access to the window during this epoch. The call to
       MPI_Win_wait blocks until all matching calls to MPI_Win_complete have occurred. This guarantees  that
       all  these  origin  processes  have  completed  their RMA accesses to the local window. When the call
       returns, all these RMA accesses will have completed at the target window.



ERRORS
       Almost all MPI routines return an error value; C routines as the value of the  function  and  Fortran
       routines  in  the  last argument. C++ functions do not return errors. If the default error handler is
       set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to  throw
       an MPI:Exception object.

       Before  the  error value is returned, the current MPI error handler is called. By default, this error
       handler aborts the MPI job, except for I/O function errors. The error handler  may  be  changed  with
       MPI_Win_set_errhandler;  the  predefined  error  handler MPI_ERRORS_RETURN may be used to cause error
       values to be returned. Note that MPI does not guarantee that an MPI  program  can  continue  past  an
       error.


SEE ALSO
       MPI_Win_post




Open MPI 1.2                                     March 2007                           MPI_Win_wait(3OpenMPI)