NAME

       MPI_Win_get_group  -  Returns  a duplicate of the group of the communicator used to create
       the window.

SYNTAX

C Syntax

       #include <mpi.h>
       MPI_Win_get_group(MPI_Win win, MPI_Group *group)

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_WIN_GET_GROUP(WIN, GROUP, IERROR)
            INTEGER WIN, GROUP, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Win_get_group(win, group, ierror)
            TYPE(MPI_Win), INTENT(IN) :: win
            TYPE(MPI_Group), INTENT(OUT) :: group
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       #include <mpi.h>
       MPI::Group MPI::Win::Get_group() const

INPUT PARAMETER

       win       Window object (handle).

OUTPUT PARAMETERS

       group     Group of processes that share access to the window (handle).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Win_get_group returns a duplicate of the group of the communicator used to create  the
       window associated with win. The group is returned in group.

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_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.