Dynamic power gating with quality guarantees

  • Authors:
  • Anita Lungu;Pradip Bose;Alper Buyuktosunoglu;Daniel J. Sorin

  • Affiliations:
  • Duke University, Durham, NC, USA;IBM, Yorktown Heights, NY, USA;IBM, Yorktown Heights, NY, USA;Duke University, Durham, NC, USA

  • Venue:
  • Proceedings of the 14th ACM/IEEE international symposium on Low power electronics and design
  • Year:
  • 2009

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Abstract

Power gating is usually driven by a predictive control, and frequent mispredictions can counter-productively lead to a large increase in energy consumption. This energy vulnerability could be exploited by malicious applications such as a power virus, or it may be exposed by regular applications containing repetitive mispredictions patterns. We propose counteracting this vulnerability by using a guard mechanism to prevent power overruns.