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Exploiting Hardware Events to Reduce Energy Consumption of HPC Systems

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2021, 26(8), pp.1-11
  • DOI : 10.9708/jksci.2021.26.08.001
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : July 28, 2021
  • Accepted : August 23, 2021
  • Published : August 31, 2021

LeeYongHo 1 KwonOSang 1 Kwangeun Byeon 1 KIMYONGJUN 1 HONG, SEOKIN 1

1성균관대학교

Accredited

ABSTRACT

This paper proposes a novel mechanism called Event-driven Uncore Frequency Scaler (eUFS) to improve the energy efficiency of the HPC systems. UFS exploits the hardware events such as LAPI (Last-level Cache Accesses Per Instructions) and CPI (Clock Cycles Per Instruction) to dynamically adjusts the uncore frequency. Hardware events are collected at a reference time period, and the target uncore frequency is determined using the collected event and the previous uncore frequency. Experiments with the NPB benchmarks demonstrate that the eUFS reduces the energy consumption by 6% on average for class C and D NPB benchmarks while it only increases the execution time by 2% on average.

Citation status

* References for papers published after 2022 are currently being built.

This paper was written with support from the National Research Foundation of Korea.