Automatic scenario detection for improved WCET estimation

  • Authors:
  • Stefan Valentin Gheorghita;Sander Stuijk;Twan Basten;Henk Corporaal

  • Affiliations:
  • Eindhoven University of Technology;Eindhoven University of Technology;Eindhoven University of Technology;Eindhoven University of Technology

  • Venue:
  • Proceedings of the 42nd annual Design Automation Conference
  • Year:
  • 2005

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Abstract

Modern embedded applications usually have real-time constraints and they are implemented using heterogeneous multiprocessor systems-on-chip. Dimensioning a system requires accurate estimations of the worst-case execution time (WCET). Overestimation leads to over-dimensioning. This paper introduces a method for automatic discovery of scenarios that incorporate correlations between different parts of applications. It is based on the application parameters with a large impact on the execution time. We show on a benchmark that, using scenarios, the estimated WCET may be reduced with 16%.