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