NAME

       MPI_Win_flush,  MPI_Win_flush_all  -  Complete  all outstanding RMA operations at both the
       origin and the target

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Win_flush (int rank, MPI_Win win)

       int MPI_Win_flush_all (MPI_Win win)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_WIN_FLUSH(RANK, WIN, IERROR)
            INTEGER RANK, WIN, IERROR

       MPI_WIN_FLUSH_ALL(IN, IERROR)
            INTEGER WIN, IERROR

INPUT PARAMETERS

       rank      Rank of window (nonnegative integer).

       win       Window object (handle).

OUTPUT PARAMETER

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Win_flush completes all outstanding RMA operations initiated by the calling process to
       the  target  rank on the specified window. The operations are completed both at the origin
       and at the target. MPI_Win_flush_all completes  all  outstanding  RMA  operations  to  all
       targets.

       Can only be called from within a passive target epoch.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and
       Fortran routines in the last argument.

       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_Comm_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_flush_local MPI_Win_lock MPI_Win_lock_all