Integrating task and data parallelism with the group communication archetype

A parallel program archetype aids the development of reliable, efficient parallel applications with common computation/communication structures by providing stepwise refinement methods and code libraries specific to the structure. The methods and libraries help in transforming a sequential program into a parallel program via a sequence of refinement steps that help maintain correctness while refining the program to obtain the appropriate level of granularity for a target machine. The specific archetype discussed deals with the integration of task and data parallelism using group communication. This archetype has been used to develop several applications