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Rainbow net analysis of VAXcluster system availabilityA system modeling technique, Rainbow Nets, is used to evaluate the availability and mean-time-to-interrupt of the VAXcluster. These results are compared to the exact analytic results showing that reasonable accuracy is achieved through simulation. The complexity of the Rainbow Net does not increase as the number of processors increases, but remains constant, unlike a Markov model which expands exponentially. The constancy is achieved by using tokens with identity attributes (items) that can have additional attributes associated with them (features) which can exist in multiple states. The time to perform the simulation increases, but this is a polynomial increase rather than exponential. There is no restriction on distributions used for transition firing times, allowing real situations to be modeled more accurately by choosing the distribution which best fits the system performance and eliminating the need for simplifying assumptions.
Document ID
19910063572
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Johnson, Allen M., Jr.
(Rainbow Analysis Systems Group Austin, TX, United States)
Schoenfelder, Michael A.
(Texas, University Austin, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1991
Publication Information
Publication: IEEE Transactions on Reliability
Volume: 40
ISSN: 0018-9529
Subject Category
Quality Assurance And Reliability
Accession Number
91A48195
Funding Number(s)
CONTRACT_GRANT: NAG9-351
Distribution Limits
Public
Copyright
Other

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