An MPI group is a set of process identifiers identified by their rank (see
MPI.Group_rank). They are used within a communicator to describe the participants in a communication universe.
An MPI Group object.
An enum denoting the result of
MPI.IDENT: the objects are handles for the same object (identical groups and same contexts).
MPI.CONGRUENT: the underlying groups are identical in constituents and rank order; these communicators differ only by context.
MPI.SIMILAR: members of both objects are the same but the rank order differs.
The number of processes involved in group.
The rank of the process in the particular group.
Returns an integer in the range