General exception for pupyMPI. Look into the API at the specific function for the actual cause of this exception.
Custom exception for Topologies
Raised in calls when specifying a rank in a communicator that is not a member of the communicator.
Custom exception for group (range) calls
Custom exception for group (range) calls
Raised in calls where an invalid tag is supplied. Remember all tags should be integers. See also the section about Rules for tags.
Raised when a new communicator is created from a group that is not a subset of the parent communicator group.
Raised if it is no longer possible to create new communicators because there are no unique identifiers available. This typically happens when communicators are created locally since only 31 can be created in total.