Title :
The Delta-4 extra performance architecture (XPA)
Author :
Barret, P.A. ; Hilborne, A.M. ; Bond, P.G. ; Seaton, D.T. ; Verissimo, P. ; Rodrigues, L. ; Speirs, N.A.
Author_Institution :
Mari appl. Technol. Ltd., Gateshead, UK
Abstract :
The design of an extra performance architecture for Delta-4, which explicitly supports the requirements of real-time systems with respect to throughput and response, is presented. The Delta-4 approach to fault tolerance is based on the replication of software components on distinct host computers using a range of different replication strategies. The problems of replicate divergence are discussed, and a solution based on message selection and preemption synchronization messages is proposed. A description of the ongoing implementation of such a system within the overall Delta-4 framework is included.<>
Keywords :
computer architecture; fault tolerant computing; performance evaluation; real-time systems; Delta-4 extra performance architecture; XPA; fault tolerance; message selection; preemption synchronization messages; real-time systems; replicate divergence; replication of software components; response; throughput; Application software; Cities and towns; Computer aided manufacturing; Computer architecture; Distributed computing; Fault tolerance; Information technology; Open systems; Protocols; Real time systems;
Conference_Titel :
Fault-Tolerant Computing, 1990. FTCS-20. Digest of Papers., 20th International Symposium
Conference_Location :
Newcastle Upon Tyne, UK
Print_ISBN :
0-8186-2051-X
DOI :
10.1109/FTCS.1990.89386
