Are COTS Suitable for Building Distributed Fault-Tolerant Hard Real-Time Systems?

Authors:
Pascal Chevochot;Antoine Colin;David Decotigny;Isabelle Puaut
Affiliations:
-;-;-;-
Venue:
IPDPS '00 Proceedings of the 15 IPDPS 2000 Workshops on Parallel and Distributed Processing
Year:
2000

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Abstract

For economic reasons, a new trend in the dev elopment of distributed hard real-time systems is to rely on the use of Commercial-Off-The-Shelf (cots) hardware and operating systems. As such systems often support critical applications, they must comply with stringent real-time and fault-tolerance requirements. The use of cots components in distributed critical systems is subject to tw o fundamental questions: are cots components compatible with hard real-time constraints? are they compatible with fault-tolerance constraints? This paper gives the current status of the Hades project, aiming at building a distributed run-time support for hard real-time fault-tolerant applications on top of cots components. Thanks to our experience in the design of Hades, we can give some information on the compatibility between cots components and hard real-time and fault-tolerance constraints.