Programming Paradigms and Clustering Rules Programming Paradigms and Clustering Rules

Debugging distributed applications is very di cult, due to a number of problems. To manage the inherent complexity of distributed applications, the use of abstractions is proposed. One frequently performed abstraction is to group processes into clusters. We describe an approach to derive clustering rules from well{known programming paradigms for distributed programming. Programming paradigms determine how we think about problems and their implementation. They shape, among other things, the application structure. This paper identi es frequently used programming paradigms for distributed computing. Likely application structures resulting from the use of these paradigms are discussed and captured in process clustering rules. A quantitative measure for process cluster evaluation is presented and applied to clusters derived for Hermes applications. The results provide insight into the relative strength of the process clustering rules.