Fault Tolerant Real-Time Systems

Abstract

Abstract : The ART (Advanced Real-Time Technology) Project of Carnegie Mellon University is engaged in wide ranging research on hard real-time systems. The project has as its overall goat the development and demonstration of predictable and fault tolerant hard real-time computer systems. To achieve this goal. research is being conducted in three interrelated areas: 1. The development of a theory of hard real-time resource management which includes processors, operating systems and communications which will permit the straightforward integration of predictable systems using open system standards. 2. The design and construction of operating systems that support the theory of hard real-time resource management 3. The design of fault tolerance techniques including hardware and software fault tolerance using temporal redundancy and analytic redundancy to permit the construction of real-time systems whose performance and dependability are predictable. The ART Project is supported, in part, by three distinct ONR Contracts (N00014-92-J 1771. N00014-92-J-1524 and N00014-91-J-1304). In this report, we describe progress for the principle Investigators supported by these three contracts. During the October 1, 1992 - September 30, 1993 period, substantial progress was made in each of these broad categories. Only the progress on real-time resource management and temporal redundancy for fault tolerance is briefly described below. A more detailed collection of briefing materials for the entire project is contained in the yearly ART Project Review provided to ONR representatives.