MPI_Win_wait(3)                    Open MPI                    MPI_Win_wait(3)



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




1.4.1                            Jan 14, 2010                  MPI_Win_wait(3)
