The Delta-4 Extra Performance Architecture (XPA)

P. Barrett, P. Bond, A. Hilborne, L. Rodrigues, D. Seaton, N. Speirs, P. Veríssimo

From the Digest of Papers, The 20th International Symposium on Fault-Tolerant Computing (FTCS), pp. 481-488, June 1990.


Abstract

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 upon the replication of software components on distinct host computers using a range of different replication strategies. This paper presents 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. The problems of replicate divergence are discussed, and a solution based on message selection and pre-emption synchronization messages is proposed. The paper includes a description of the on-going implementation of such system within the overall Delta-4 framework.



BibTeX

@InProceedings{barrett90delta4,
    author = "P. Barrett and P. Bond and A. Hilborne and L. Rodrigues and D. Seaton and N. Speirs and P. Ver\'{\i}ssimo",
    title = "The Delta-4 Extra Performance Architecture (XPA)",
    booktitle = "Digest of Papers of the 20th IEEE International Symposium on Fault-Tolerant Computing (FTCS)",
    pages = "481--488",
    month = jun,
    year = "1990"
}


Extended Version

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