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.