Real-time and dependability comparison of Delta-4/XPA and MARS systems


Both Delta-4/XPA and MARS are distributed systems specially devoted to the control of very demanding environments in terms of real-time (timely and correct actions) and dependability (reliability and availability). Each system has different approaches to the problem. This paper presents, compares, and discusses the two approaches taken by Delta-4/XPA and MARS, focusing on the options taken with respect to real-time and fault tolerance. 1 Introduction This paper presents, compares, and discusses the Delta-4/XPA and MARS systems in terms of their dependability and real-time approaches. Overviews of Delta-4/XPA and MARS architectures are presented in the next two sections. Section 4 compares the two systems, and section 5 discusses the impact of their differences. 2 Delta-4/XPA The Delta-4 project developed an open, dependable, distributed computing architecture for large systems. The application domains targeted by the Delta-4 architecture are process control systems, command c..

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