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Heterogeneous Multiprocessor Systems wilh Breakdowns: Performance and Optimal Repair Strategies

Lookup NU author(s): Emeritus Professor Isi Mitrani



A model of a system with N parallel processors subject to occasional interruptions of service, and a common unbounded queue fed by a Poisson arrival stream, is analized in the steady state. The service, breakdown and repair characteristics may vary from processor to processor. A solution method called spectral expansion is used to determine the joint distribution of the state of the processors and the number of jobs in the queue. the problem of optimizing the repair policy is addressed. The optimal policy is determined in the case when all breakdown rates are equal, and very good heursitics are found in the general case.

Publication metadata

Author(s): Chakka R, Mitrani I

Publication type: Report

Publication status: Published

Series Title: Computing Laboratory Technical Report Series

Year: 1991

Pages: 18

Print publication date: 01/01/1991

Source Publication Date: 1991

Report Number: 369

Institution: Computing Laboratory, University of Newcastle upon Tyne

Place Published: Newcastle upon Tyne