In: Translation of: Avtomatika i Vychislitel'naya Tekhnika, Vol. 24, No. 2, pages 80-87. 1990. In Russian.
Also in: Automatic Control and Computer Sciences, Vol. 24, No. 2, pages 69-76. 1990. English translation.
Abstract: The author examines the possibilities of multilevel simulation of digital computer systems on the basis of Petri nets (PN). The need for expanding PNs by introducing an `absorber arc' is demonstrated. The use of `absorbing PNs' makes it possible to obtain, with a relatively small amount of effort, the structure of a device or system that yields the requisite level of failure-free operation, testability, and fault tolerance of the entity being designed.
Keywords: absorbing net; absorber arc; distributed computer system development; failure freeness; testability; fault tolerance.