MPI_Win_flush(3) Open MPI MPI_Win_flush(3)
NAME
MPI_Win_flush, MPI_Win_flush_all - Complete all outstanding RMA opera-
tions 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
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_WIN_FLUSH(RANK, WIN, IERROR)
INTEGER RANK, WIN, IERROR
MPI_WIN_FLUSH_ALL(WIN, IERROR)
INTEGER WIN, IERROR
Fortran 2008 Syntax
USE mpi_f08
MPI_Win_flush(rank, win, ierror)
INTEGER, INTENT(IN) :: rank
TYPE(MPI_Win), INTENT(IN) :: win
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
MPI_Win_flush_all(win, ierror)
TYPE(MPI_Win), INTENT(IN) :: win
INTEGER, OPTIONAL, INTENT(OUT) :: 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 opera-
tions are completed both at the origin and at the target.
MPI_Win_flush_all completes all outstanding RMA operations to all tar-
gets.
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
4.1.2 Nov 24, 2021 MPI_Win_flush(3)
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