Diet SODA: a power-efficient processor for digital cameras

Authors:
Sangwon Seo;Ronald G. Dreslinski;Mark Woh;Chaitali Chakrabarti;Scott Mahlke;Trevor Mudge
Affiliations:
University of Michigan, Ann Arbor, MI, USA;University of Michigan, Ann Arbor, MI, USA;University of Michigan, Ann Arbor, MI, USA;Arizona State University, Tempe, AZ, USA;University of Michigan, Ann Arbor, MI, USA;University of Michigan, Ann Arbor, MI, USA
Venue:
Proceedings of the 16th ACM/IEEE international symposium on Low power electronics and design
Year:
2010

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Abstract

Power has become the most critical design constraint for embedded handheld devices. This paper proposes a power-efficient SIMD architecture, referred to as Diet SODA, for DSP applications. The key design idea is to apply near-threshold operation on a single instruction and multiple data (SIMD) architecture to significantly lower the power consumption. The major features of Diet SODA are very wide SIMD width, scatter/gather data prefetcher, and dual mode operation. A case study was performed on digital still camera(DSC) applications; the results show that Diet SODA achieves ~130x better performance and ~340x better energy efficiency than a DSP solution.