NAME

       MPI_Win_post - Starts an RMA exposure epoch for the local window associated 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++ 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_start MPI_Win_wait

4.1.6                                             Sep 30, 2023                                   MPI_Win_post(3)