MPI_Win_get_group − Returns a duplicate of the group of the communicator used to create the window.
#include
<mpi.h>
MPI_Win_get_group(MPI_Win win, MPI_Group
*group)
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_WIN_GET_GROUP(WIN, GROUP, IERROR)
INTEGER WIN, GROUP, IERROR |
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 |
win |
Window object (handle). |
group |
Group of processes that share access to the window (handle). |
|||
IERROR |
Fortran only: Error status (integer). |
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.
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.