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Using passive replicates in Delta-4 to provide dependable distributed computing

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2 Author(s)
Speirs, N.A. ; Comput. Lab., Newcastle upon Tyne Univ., UK ; Barrett, P.A.

As part of the European Strategic Programme for Research in Information Technology (ESPRIT), the Delta-4 project is seeking to define an open, fault-tolerant, distributed computing architecture. The Delta-4 approach to fault tolerance is based on the replication of software components on distinct host computers. Both active and passive replication strategies are contained within the framework of Delta-4. The philosophy behind the mechanisms used within the passive replication paradigm is presented. In the Delta-4 approach, backward error recovery is achieved by integrating checkpointing with interprocess communication. This approach is seen to be applicable to both deterministic and nondeterministic programs. A description is also given of the implementation of such a system within the overall Delta-4 framework.<>

Published in:

Fault-Tolerant Computing, 1989. FTCS-19. Digest of Papers., Nineteenth International Symposium on

Date of Conference:

21-23 June 1989

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