NDLI: Achieving Thermal-Resiliency for Multicore Hard-Real-Time Systems

Content Provider	IEEE Xplore Digital Library
Author	Hettiarachchi, P.M. Fisher, N. Wang, L.Y.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Wayne State Univ., Detroit, MI, USA (Wang, L.Y.) \|\| Dept. of Comput. Sci., Wayne State Univ., Detroit, MI, USA (Hettiarachchi, P.M.; Fisher, N.)
Abstract	Multicore processor based system designs are increasingly utilized as the processing platform for complex hard-real-time and embedded applications. These real-time systems need to operate under various physical and design constraints. Much research has focused on thermal-aware real-time systems designs. However, no results exist to investigate the resource allocation and the system degradation under external thermal constraints in a predictable manner. This paper proposes a control-theoretic framework to ensure hard-real-time deadlines on a multiprocessor platform in a dynamic thermal environment. We use real-time performance modes to permit the system to adapt to changing conditions. Also, we show how the system designer can use our framework to allocate asymmetric processing resources upon a multicore CPU and still maintain thermal constraints. We develop analysis for determining what modes the system can support for a given external thermal condition. Our system design extends the derivation of thermal-resiliency (originally proposed for uniprocessor systems) to multicore systems and determines the limitations of external thermal stress that any hard-real-time performance mode can withstand. Simulations and physical test bed results show that our algorithm predicts how a system will gracefully and predictably degrade under external thermal stress.
Starting Page	37
Ending Page	46
File Size	1096221
Page Count	10
File Format	PDF
ISBN	9780769550541
ISSN	10683070
DOI	10.1109/ECRTS.2013.15
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-09
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real-time systems Multicore processing Thermal analysis Central Processing Unit Pulse width modulation Thermal stresses thermal-aware periodic resource Real-Time Systems Control-Theoretic Thermal-Resilient Systems Design Multicore Hard-Real-Time Systems Thermal-Resiliency Multi-Mode Systems
Content Type	Text
Resource Type	Article

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