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<p>An approach for visually specifying parallel/distributed software using Petri nets (PNs) extend with transition enabling functions (TEFs) is investigated. The approach is demonstrated to be useful in the specification of decision-making activities that control distributed computing systems. PNs are employed because of their highly visual nature that can give insight into the nature of the controller of such a system and because of their analytical properties. In order to increase the expressive power of PNs, the extension of TEFs is used. The main focus is the specification and analysis of parallel/distributed software and systems. A key element of this approach is a set of rules derived to automatically transform such an extended net into a basic PN. Once the rules have been applied to transform the specification, analytical methods can be used to investigate characteristic properties of the system and validate correct operation.</p>
parallel/distributed software; Petri nets; transition enabling functions; TEFs; specification; decision-making activities; distributed computing systems; analytical properties; expressive power; PNs; TEFs; parallel/distributed software; formal specification; parallel programming; Petri nets

T. Casavant and Y. Papelis, "Specification and analysis of parallel/distributed software and systems by Petri nets with transition enabling functions," in IEEE Transactions on Software Engineering, vol. 18, no. , pp. 252-261, 1992.
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