Energy-conscious compilation based on voltage scaling

H. Saputra, M. Kandemir, N. Vijaykrishnan, M. J. Irwin, J. S. Hu, C. H. Hsu, U. Kremer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

76 Scopus citations

Abstract

As energy consumption has become a major constraint in current system design, it is essential to look beyond the traditional low-power circuit and architectural optimizations. Further, software is becoming an increasing portion of embedded/portable systems. Consequently, optimizing the software in conjunction with the underlying low-power hardware features such as voltage scaling is vital. In this paper, we present two compiler-directed energy optimization strategies based on voltage scaling: static voltage scaling and dynamic voltage scaling. In static voltage scaling, the compiler determines a single supply voltage level for the entire input program. We primarily aim at improving the energy consumption of a given code without increasing its execution time. To accomplish this, we employ classical loop-level compiler optimizations. However, we use these optimizations to create opportunities for voltage scaling to save energy, rather than increase program performance. In dynamic voltage scaling, the compiler can select different supply voltage levels for different parts of the code. Our compilation strategy is based on integer linear programming and can accommodate energy/performance constraints. For a benchmark suite of array-based scientific codes and embedded video/image applications, our experiments show average energy savings of 31.8% when static voltage scaling is used. Our dynamic voltage scaling strategy saves 15.3% more energy than static voltage scaling when invoked under the same performance constraints.

Original languageEnglish (US)
Title of host publicationJoint COnference on Languages, Compilers and Tools for Embedded Systems and Software and Compilers for Embedded Systems
EditorsP. Marwedel, S. Devadas
PublisherAssociation for Computing Machinery (ACM)
Pages2-11
Number of pages10
ISBN (Print)1581135270, 9781581135275
DOIs
StatePublished - 2002
EventJoint Conference on Languages, Compilers and Tools for Embedded Systems and Software and Compilers for Embedded Systems - Berlin, Germany
Duration: Jun 19 2002Jun 21 2002

Publication series

NameJoint COnference on Languages, Compilers and Tools for Embedded Systems and Software and Compilers for Embedded Systems

Other

OtherJoint Conference on Languages, Compilers and Tools for Embedded Systems and Software and Compilers for Embedded Systems
CountryGermany
CityBerlin
Period6/19/026/21/02

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Saputra, H., Kandemir, M., Vijaykrishnan, N., Irwin, M. J., Hu, J. S., Hsu, C. H., & Kremer, U. (2002). Energy-conscious compilation based on voltage scaling. In P. Marwedel, & S. Devadas (Eds.), Joint COnference on Languages, Compilers and Tools for Embedded Systems and Software and Compilers for Embedded Systems (pp. 2-11). (Joint COnference on Languages, Compilers and Tools for Embedded Systems and Software and Compilers for Embedded Systems). Association for Computing Machinery (ACM). https://doi.org/10.1145/513830.513832