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Optimal design of fault-tolerant soft-real-time systems with imprecise computations

  • Cesare Antonelli
  • Vincenzo Grassi
Session 3: Evaluation
Part of the Lecture Notes in Computer Science book series (LNCS, volume 852)

Abstract

The imprecise computation technique applied to real-time systems has been proposed for a better control of the delivered service quality when full quality service cannot be achieved because of temporary overloads or reductions of computational power. We propose a methodology for the evaluation of the service quality delivered by a fault-tolerant multiprocessor soft-real-time system which employs the imprecise computation technique, subject to a periodic workload. Such a methodology allows us to define optimization strategies whose goal is to determine the optimal trade-off between the system cost and the overall quality of the delivered service.

Keywords

real time imprecise computation scheduling, performability optimization 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • Cesare Antonelli
    • 1
  • Vincenzo Grassi
    • 2
  1. 1.Dipartimento di Ingegneria ElettronicaUniversità di Roma “Tor Vergata”Italy
  2. 2.Istituto di ElettronicaUniversità di PerugiaItaly

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