Modeling methods for the design and evaluation of fault-tolerant systems (military systems)

The authors describe an approach for using directed graph simulation models, behavioral simulation models, and semi-Markov analytic models to implement early- to mid-design analysis activities specified by the SDIO BM/C/sup 3/ Processor and Algorithm Working Group. The use of the models was demonstrated for a mission scenario requiring parallel, reliable computations with a maximum probability of system failure between 10/sup -4/ and 10/sup -2/ over a 5-year preengagement phase and between 10/sup -7/ and 10/sup -5/ over a half-hour engagement phase.<>