Problem Id
نویسندگان
چکیده
We introduce Stochastic Process Algebras as a novel approach for the struc-tured design and analysis of both the functional behaviour and performance characteristics of parallel and distributed systems. This is achieved by integrating performance modelling and analysis into the powerful and well investigated formal description technique of process algebras. After advocating the use of stochastic process algebras as a modelling technique we recapitulate the foundations of classical process algebras. Then we present extensions of process algebras such that the requirements of performance analysis are taken into account. Examples illustrate the methodological advantages that are gained. There are three fundamental categories of attributes indispensable for the viability of any technical system: functionality, performance and economicity Fer86]. However, it is not unusual for a system to be fully designed and functionally tested before an attempt is made to determine its performance characteristics Har86]: Redesign of both hardware and software is usually the consequence; this is costly and may cause late system delivery. This is particularly true for real-time systems and a dramatic misdesign of mobile communication ground stations has occurred only recently.
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