An empirical comparison of formalisms for modelling and analysis of dynamic reconfiguration of dependable systems

Author:

Bhattacharyya Anirban1,Mokhov Andrey2,Pierce Ken1

Affiliation:

1. School of Computing Science, Newcastle University, Claremont Tower, Claremont Road, NE1 7RU, Newcastle upon Tyne, UK

2. School of Electrical and Electronic Engineering, Newcastle University, Merz Court, NE1 7RU, Newcastle upon Tyne, UK

Abstract

Abstract This paper uses a case study to evaluate empirically three formalisms of different kinds for their suitability for the modelling and analysis of dynamic reconfiguration of dependable systems. The requirements on an ideal formalism for dynamic software reconfiguration are defined. The reconfiguration of an office workflow for order processing is described, and the requirements on the reconfiguration of the workflow are defined. The workflow is modelled using the Vienna Development Method (VDM), conditional partial order graphs (CPOGs), and the basic Calculus of Communicating Systems for dynamic process reconfiguration (basic CCS dp ), and verification of the reconfiguration requirements is attempted using the models. The formalisms are evaluated according to their ability to model the reconfiguration of the workflow, to verify the requirements on the workflow’s reconfiguration, and to meet the requirements on an ideal formalism.

Funder

Newcastle University

Publisher

Association for Computing Machinery (ACM)

Subject

Theoretical Computer Science,Software

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