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.

4.1.6                                             Sep 30, 2023                              MPI_Win_get_group(3)