MPI_Win_post(3) Open MPI MPI_Win_post(3)
NAME
MPI_Win_post - Starts an RMA exposure epoch for the local window asso-
ciated with win
SYNTAX
C Syntax
#include <mpi.h>
int MPI_Win_post(MPI_Group group, int assert, MPI_Win win)
Fortran Syntax
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_WIN_POST(GROUP, ASSERT, WIN, IERROR)
INTEGER GROUP, ASSERT, WIN, IERROR
Fortran 2008 Syntax
USE mpi_f08
MPI_Win_post(group, assert, win, ierror)
TYPE(MPI_Group), INTENT(IN) :: group
INTEGER, INTENT(IN) :: assert
TYPE(MPI_Win), INTENT(IN) :: win
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
C++ Syntax
#include <mpi.h>
void MPI::Win::Post(const MPI::Group& group, int assert) const
INPUT PARAMETERS
group The group of origin processes (handle)
assert Program assertion (integer)
win Window object (handle)
OUTPUT PARAMETERS
IERROR Fortran only: Error status (integer).
DESCRIPTION
Starts an RMA exposure epoch for the local window associated with win.
Only the processes belonging to group should access the window with RMA
calls on win during this epoch. Each process in group must issue a
matching call to MPI_Win_start. MPI_Win_post does not block.
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++ func-
tions 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_start MPI_Win_wait
4.1.2 Nov 24, 2021 MPI_Win_post(3)
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