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PATMOS
2015
Springer

Calculation of worst-case execution time for multicore processors using deterministic execution

2 years 11 months ago
Calculation of worst-case execution time for multicore processors using deterministic execution
Safety critical real time systems need to meet strict timing deadlines. We use a model checking based approach to calculate the WCET, where we apply optimizations to reduce the number of states stored by the model checker. Furthermore, we used deterministic shared memory accesses to further reduce calculation time, memory and number of states needed for calculating WCET. By optimizing the model checking code, we were able to complete benchmarks which otherwise were having state explosion problems. Furthermore, by using deterministic execution, we significantly reduced the calculation time (up to 158x), memory (up to 89x) and states needed (up to 188x) for calculating WCET with a negligible increase (up to 4%) in the calculated WCET for a multicore system with 4 cores. Lastly, unlike other state-of-the-art approaches, that perform binary search to search the WCET by running several iterations, our method calculates WCET in just one iteration. Taking all these optimizations into consider...
Hamid Mushtaq, Zaid Al-Ars, Koen Bertels
Added 16 Apr 2016
Updated 16 Apr 2016
Type Journal
Year 2015
Where PATMOS
Authors Hamid Mushtaq, Zaid Al-Ars, Koen Bertels
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