Integrity management in GUARDS

Totel, Éric; Beus-Dukic, Ljerka; Blanquart, Jean-Paul; Deswarte, Yves; Powell, David; Wellings, Andy

doi:10.1007/978-1-4471-1283-9_7

Cited by 1 publication

(2 citation statements)

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“…This is achieved by spatial and temporal isolation, which are provided respectively by memory management hardware and resource utilization budget timers [66]. Furthermore, for the most critical components (the topmost integrity level) and a core set of basic components (i.e., the integrity management components and the underlying hardware and operating systems), it must be assumed either that there are no design faults, or that they can be tolerated by some other means (e.g., through diversification).…”

Section: The Integrity Dimensionmentioning

confidence: 99%

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GUARDS: a generic upgradable architecture for real-time dependable systems

Powell

Arlat

Beus-Dukic

et al. 1999

IEEE Trans. Parallel Distrib. Syst.

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Abstract. The development and validation of fault-tolerant computers for critical realtime applications are currently both costly and time-consuming. Often, the underlying technology is out-of-date by the time the computers are ready for deployment. Obsolescence can become a chronic problem when the systems in which they are embedded have lifetimes of several decades. This paper gives an overview of the work carried out in a project that is tackling the issues of cost and rapid obsolescence by defining a generic fault-tolerant computer architecture based essentially on commercial off-the-shelf (COTS) components (both processor hardware boards and real-time operating systems). The architecture uses a limited number of specific, but generic, hardware and software components to implement an architecture that can be configured along three dimensions: redundant channels, redundant lanes and integrity levels. The two dimensions of physical redundancy allow the definition of a wide variety of instances with different fault-tolerance strategies. The integrity level dimension allows application components of different levels of criticality to co-exist in the same instance. The paper describes the main concepts of the architecture, the supporting environments for development and validation, and the prototypes currently being implemented.

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Section: The Integrity Dimensionmentioning

confidence: 99%

“…In this paper, we do not detail the integrity dimension any further -the interested reader should refer to references [66,67] …”

Section: The Integrity Dimensionmentioning

confidence: 99%