Energy Optimization of Distributed Embedded Processors by Combined Data Compression and Functional Partitioning

  • Authors:
  • Jinfeng Liu;Pai H. Chou

  • Affiliations:
  • University of California, Irvine;University of California, Irvine

  • Venue:
  • Proceedings of the 2003 IEEE/ACM international conference on Computer-aided design
  • Year:
  • 2003

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Abstract

Transmitting compressed data can reduce inter-processor communicationtraffic and create new opportunities for DVS (dynamicvoltage scaling) in distributed embedded systems. However, datacompression alone may not be effective unless coordinated withfunctional partitioning. This paper presents a dynamic programmingtechnique that combines compression and functional partitioningto minimize energy on multiple voltage-scalable processorsrunning pipelined data-regular applications under performance constraints.Our algorithm computes the optimal functional partitioning,CPU speed for each node, and their respective compression ratios.We validate the algorithm's effectiveness on a real distributedembedded system running an image processing algorithm.