The Advanced Architecture Onboard Processor is a fault-tolerant multiprocessor for space applications that is based on a fault-tolerant chordal skip-link ring interconnect network. Low-power self-checking circuits in each processor node are combined with distributed reconfiguration control and local rollback recovery to achieve robust fault tolerance within spacecraft weight and power constraints. A ten-processor-node breadboard has been completed. The approach to fault tolerance and the tradeoff analysis leading to the selected implementation are covered. Analytical trade study results such as redundancy overhead as a function of system partitioning for the chordal skip-link ring are discussed.


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    Title :

    The fault tolerance approach of the Advanced Architecture Onboard Processor


    Additional title:

    Das Fehlertoleranz-Verfahren des Advanced Architekture Onboard Processors


    Contributors:
    Iacoponi, M.J. (author) / Vail, D.K. (author)


    Publication date :

    1989


    Size :

    7 Seiten, 26 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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