NDLI: Application Adaptive Energy Efficient Clustered Architectures

Content Provider	IEEE Xplore Digital Library
Author	Marculescu, D.
Copyright Year	2004
Description	Author affiliation: Carnegie Mellon University, Pittsburgh, PA (Marculescu, D.)
Abstract	As clock frequency and die area increase, achieving energy efficiency, while distributing a low skew, global clock signal becomes increasingly difficult. Challenges imposed by deep-submicron technologies can be alleviated by using a multiple voltage/multiple frequency island design style, or otherwise called, globally asynchronous, locally synchronous (GALS) design paradigm. This paper proposes a clustered architecture that enables application-adaptive energy efficiency through the use of dynamic voltage scaling for application code that is rendered non-critical for the overall performance, at run-time. As opposed to task scheduling using dynamic voltage scaling (DVS) that exploits workload variations across applications, our approach targets workload variations within the same application, while on-the fly classifying code as critical or non-critical and adapting to changes in the criticality of such code portions. Our results show that application adaptive variable voltage/variable frequency clustered architectures are up to 22% better in energy and 11% better in energy-delay product than their non-adaptive counterparts, while providing up to 31% more energy savings when compared to DVS applied globally.
Starting Page	344
Ending Page	349
File Size	187108
Page Count	6
File Format	PDF
ISBN	1581139292
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-08-11
Access Restriction	Subscribed
Rights Holder	Association for Computing Machinery, Inc. (ACM)
Subject Keyword	Energy efficiency Clocks Frequency Dynamic voltage scaling Voltage control Dynamic scheduling Hardware Adaptive control Application software Computer architecture Clustered architectures
Content Type	Text
Resource Type	Article

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