The perceived effect of breakdown and repair on the performance of multiprocessor systems |
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Authors: | Robert Geist Dennis E Stevenson Robert A Allen |
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Affiliation: | 1. Department of Biology, Faculty of Sciences, University of Porto, Porto 4169-007, Portugal;2. CIMAR, Centro de Investigação Marinha e Ambiental, Porto 4050-123, Portugal;3. UMR 1419, INRA, UPPA, F-64310 Saint Pée sur Nivelle, France |
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Abstract: | It is argued that classical measures of computer system performance, for example mean response time, are inadequate in the context of fault-tolerant system design. Alternative, perception-based measures are proposed and theorems established describing their properties. Focus is directed upon the homogeneous M/M/m system in which total processor power is constrained by budget and processors are subject to failure and repair. A numerical technique for extracting both classical and perception-based measures from the associated two-dimensional Markov process is offered, along with bounds on time and space required for its execution. It is seen that the perception-based approach to system design can call for twice as many processors as the classical approach. |
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Keywords: | Multiprocessor Systems User Perception Fault Tolerance Configuration Design Markov Models Power Method Invariant Measure |
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