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1 CAIRN - Energy Efficient Computing ArchItectures with Embedded Reconfigurable Resources Inria Rennes – Bretagne Atlantique , IRISA-D3 - ARCHITECTURE 2 Toulouse - ONERA - The French Aerospace Lab 3 LAAS - Laboratoire d-analyse et d-architecture des systèmes Toulouse 4 IRIT - Institut de recherche en informatique de Toulouse 5 Thales Research and Technology Palaiseau

Abstract : When integrating mixed critical systems on a multi-many-core, one challenge is to ensure predictability for high crit-icality tasks and an increased utilization for low criticality tasks. In this paper, we address this problem when several high criticality tasks with different deadlines, periods and offsets are concurrently executed on the system. We pro-pose a distributed run-time WCET controller that works as follows: 1 locally, each critical task regularly checks if the interferences due to the low criticality tasks can be toler-ated, otherwise it decides their suspension; 2 globally, a master suspends and restarts the low criticality tasks based on the received requests from the critical tasks. Our ap-proach has been implemented as a software controller on a real multi-core COTS system with significant gains 1 .





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Fuente: https://hal.archives-ouvertes.fr/



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