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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Runtime Verification for Ultra-Critical Systems
verfasst von : Lee Pike, Sebastian Niller, Nis Wegmann
Erschienen in: Runtime Verification
Verlag: Springer Berlin Heidelberg
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Runtime verification (RV) is a natural fit for ultra-critical systems, where correctness is imperative. In ultra-critical systems, even if the software is fault-free, because of the inherent unreliability of commodity hardware and the adversity of operational environments, processing units (and their hosted software) are replicated, and fault-tolerant algorithms are used to compare the outputs. We investigate both software monitoring in distributed fault-tolerant systems, as well as implementing fault-tolerance mechanisms using RV techniques. We describe the Copilot language and compiler, specifically designed for generating monitors for distributed, hard real-time systems, and we describe a case study in a Byzantine fault-tolerant airspeed sensor system.