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Title: Intra-application energy reduction for microprocessor low-power design
Authors: Xia, X.X.
Tay, T.T. 
Keywords: Identification
Low-power design
Issue Date: Feb-2009
Citation: Xia, X.X., Tay, T.T. (2009-02). Intra-application energy reduction for microprocessor low-power design. Journal of Circuits, Systems and Computers 18 (1) : 181-198. ScholarBank@NUS Repository.
Abstract: Energy consumption is one of the most important design constraints for modern microprocessors, and designers have proposed many energy-saving techniques. Looking beyond the traditional hardware low-power designs, software optimization is becoming a significant strategy for the microprocessor to lower its energy consumption. This paper describes an intra-application identification and reconfiguration mechanism for microprocessor energy reduction. Our mechanism employs a statistical sampling method during training runs to identify code sections among application that have appropriate IPC (Instructions per Cycle) values and could make contributions to program runtime energy reduction, and then profiles them to dynamically scale the voltage and frequency of the microprocessor at appropriate points during execution. In our simulation, our approach achieves energy savings by an average of 39% with minor performance degradation, compared to a processor running at a fixed voltage and speed. © 2009 World Scientific Publishing Company.
Source Title: Journal of Circuits, Systems and Computers
ISSN: 02181266
DOI: 10.1142/S0218126609005010
Appears in Collections:Staff Publications

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