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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)
INCLUDE ’mpif.h’
MPI_WIN_GET_GROUP(WIN, GROUP, IERROR)
INTEGER WIN, GROUP, IERROR
#include <mpi.h>
MPI::Group MPI::Win::Get_group() const
- 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.
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