[This is preliminary documentation and is subject to change.]
Returns the rank of the currently executing process within this communicator.Namespace: MPI
Assembly: MPI (in MPI)
Version: 0.5.0.0 (0.5.0.0)
The rank is a number between 0 and Size-1 that is used to identify this process, e.g., to send messages to it. The value of Rank will differ from one process to the next.