Performability Evaluation of the SIFT Computer

Performability modeling and evaluation methods are applied to the SIFT computer in the computational environment of an air transport mission. User-visible performance of the "total system" (SIFT plus its environment) is modeled as a random variable taking values in a set of "accomplis...

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Bibliographic Details
Published inIEEE transactions on computers Vol. C-29; no. 6; pp. 501 - 509
Main Authors Meyer, J F, FURCHTGOTT, D G, Wu, L T
Format Journal Article
LanguageEnglish
Published IEEE 01.06.1980
Subjects
Aircraft
Airports
Atmospheric modeling
Computational modeling
Fault tolerant computing
performability evaluation
performance evaluation
Reliability
reliability evaluation
SIFT computer
Trajectory
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Summary:Performability modeling and evaluation methods are applied to the SIFT computer in the computational environment of an air transport mission. User-visible performance of the "total system" (SIFT plus its environment) is modeled as a random variable taking values in a set of "accomplishment levels." These levels are defined in terms of four attributes of total system behavior: safety, no change in mission profile, no operational penalties, and no economic penalties. The "base model" of the total system is a stochastic process whose states describe the internal structure of SIFT as well as relevant conditions of its environment. Base model state trajectories are related to accomplishment levels via a "capability function" which is formulated in terms of a three-level model hierarchy. Solution methods are then applied to determine the performability of the total system for various choices of computer and environment parameter values.
Bibliography:ObjectType-Article-2
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ISSN:0018-9340
1557-9956
DOI:10.1109/TC.1980.1675609