NDLI: Reliability-aware power management for parallel real-time applications with precedence constraints

Content Provider	IEEE Xplore Digital Library
Author	Yifeng Guo Dakai Zhu Aydin, H.
Copyright Year	2011
Description	Author affiliation: Department of Computer Science, University of Texas at San Antonio, 78249, USA (Yifeng Guo; Dakai Zhu) \|\| Department of Computer Science, George Mason University, Fairfax, VA 22030, USA (Aydin, H.)
Abstract	The negative effects of the Dynamic Voltage and Frequency Scaling (DVFS) technique on the system reliability has recently promoted the research on reliability-aware power management (RAPM). RAPM aims at reducing the system energy consumption while preserving the system's reliability. In this paper, we study the RAPM problem for parallel realtime applications for shared memory multiprocessor systems in the presence of precedence constraints. We show that this problem is NP-hard. Depending on how recoveries are scheduled and utilized by a subset of selected tasks, we investigate both individual-recovery and shared-recovery based RAPM heuristics. Online RAPM schemes that exploit dynamic slack generated at runtime are also considered. The proposed schemes are evaluated through extensive simulations. The results show that all schemes can preserve system reliability under all settings. For modest system loads, similar energy savings are obtained by all static schemes. However, when the system load is low, the shared-recovery based schemes need coordinated recovery operations on all processors and thus save less energy. Moreover, by reclaiming dynamic slack, the online schemes yield better energy savings.
Starting Page	1
Ending Page	8
File Size	176260
Page Count	8
File Format	PDF
ISBN	9781457712227
e-ISBN	9781457712210
DOI	10.1109/IGCC.2011.6008562
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Multiprocessor Real-Time Systems Schedules Energy consumption Program processors Transient Faults Reliability Transient analysis Dependent Tasks Multiprocessing systems DVFS
Content Type	Text
Resource Type	Article

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