A predictive system shutdown method for energy saving of event-driven computation

  • Authors:
  • Chi-Hong Hwang;Allen C.-H. Wu

  • Affiliations:
  • Department of Computer Science, Tsing Hua University, Hsinchu, Taiwan, 300, Republic of China;Department of Computer Science, Tsing Hua University, Hsinchu, Taiwan, 300, Republic of China

  • Venue:
  • ICCAD '97 Proceedings of the 1997 IEEE/ACM international conference on Computer-aided design
  • Year:
  • 1997

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Abstract

We present a system-level power management technique for power saving of event-driven applications. We present a new predictive system shutdown method to exploit sleep mode operations for power saving. We use an exponential-average approach to predict the upcoming idle period. We introduce two mechanisms, prediction-miss correction and pre-wakeup, to improve the hit ratio and to reduce the delay overhead. Experiments on four different event-driven applications show that our proposed method achieves high hit ratios in a wide range of delay overheads, which results in a high degree of power saving with low delay penalties.