System-level mitigation of WID leakage power variability using body-bias islands

Siddharth Garg, Diana Marculescu

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

Abstract

Adaptive Body Biasing (ABB) is a popularly used technique to mitigate the increasing impact of manufacturing process variations on leakage power dissipation. The efficacy of the ABB technique can be improved by partitioning a design into a number of "body-bias islands," each with its individual body-bias voltage. In this paper, we propose a system-level leakage variability mitigation framework to partition a multiprocessor system into body-bias islands at the processing element (PE) granularity at design time, and to optimally assign body-bias voltages to each island post-fabrication. As opposed to prior gate- and circuit-level partitioning techniques that constrain the global clock frequency of the system, we allow each island to run at a different speed and constrain only the relevant system performance metrics - in our case the execution deadlines. Experimental results show the efficacy of the proposed framework in reducing the mean and standard deviation of leakage power dissipation compared to a baseline system without ABB. At the same time, the proposed techniques provide significant runtime improvements over a previously proposed Monte-Carlo based technique while providing similar reductions in leakage power dissipation.

Original languageEnglish (US)
Title of host publicationEmbedded Systems Week 2008 - Proceedings of the 6th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis, CODES+ISSS 2008
Pages273-278
Number of pages6
DOIs
StatePublished - Dec 1 2008
EventEmbedded Systems Week 2008 - 6th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis, CODES+ISSS 2008 - Atlanta, GA, United States
Duration: Oct 19 2008Oct 24 2008

Publication series

NameEmbedded Systems Week 2008 - Proceedings of the 6th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis, CODES+ISSS 2008

Other

OtherEmbedded Systems Week 2008 - 6th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis, CODES+ISSS 2008
CountryUnited States
CityAtlanta, GA
Period10/19/0810/24/08

    Fingerprint

ASJC Scopus subject areas

  • Hardware and Architecture
  • Software
  • Electrical and Electronic Engineering

Cite this

Garg, S., & Marculescu, D. (2008). System-level mitigation of WID leakage power variability using body-bias islands. In Embedded Systems Week 2008 - Proceedings of the 6th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis, CODES+ISSS 2008 (pp. 273-278). (Embedded Systems Week 2008 - Proceedings of the 6th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis, CODES+ISSS 2008). https://doi.org/10.1145/1450135.1450197