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Mixed Criticality Systems: Beyond Transient Faults
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0002-6355-3564
University of York, UK.
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0003-4157-3537
Birla Institute of Technology and Science, India.ORCID iD: 0000-0001-5269-3900
2015 (English)In: WMC 2015: Proceedings of the 3rd International Workshop on Mixed Criticality Systems, 2015Conference paper, Published paper (Refereed)
Abstract [en]

Adopting mixed-criticality architectures enable safe sharing of computational resources between tasks of different criticalities consequently leading to reduced Size, Weight and Power (SWaP) requirements. A majority of the research in mixed-criticality systems focuses on scheduling tasks whose Worst Case Execution Times (WCETs) are certified to varying levels of assurances. If any given task overruns its WCET, the system switches to a higher criticality and all the lower criticality tasks are discarded to make time for the execution of higher criticality tasks. Task execution time overruns are transient faults that are typically tolerated by simply executing an alternate task before the original deadline, or, by discarding the failed task to prevent it from interfering with higher criticality tasks. However, permanent faults such as processor failures can render the system to be useless, many times leading to unsafe states. In this paper we present a taxonomy of fault tolerance techniques to tolerate permanent faults, as well as map it to real-time mixed-criticality requirements based on the extend of fault coverage that in turn influences the associated assurance.

Place, publisher, year, edition, pages
2015.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-29659OAI: oai:DiVA.org:mdh-29659DiVA: diva2:876461
Conference
The 3rd International Workshop on Mixed Criticality Systems WMC'15, 1 Dec 2015, San Antonio, Texas, United States
Available from: 2015-12-03 Created: 2015-11-26 Last updated: 2015-12-03Bibliographically approved

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https://www-users.cs.york.ac.uk/~robdavis/wmc/WMC2015proceedings.pdf

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Thekkilakattil, AbhilashDobrin, RaduPunnekkat, Sasikumar
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CiteExportLink to record
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Citation style
  • apa
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