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Computer power efficiency improvement by adaptive power control using processor performance counter

Research Project

Project/Area Number 19K24356
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 1001:Information science, computer engineering, and related fields
Research InstitutionKanagawa Institute of Technology

Principal Investigator

KAWAGUCHI Shinichi  神奈川工科大学, 健康医療科学部, 教授 (30850945)

Project Period (FY) 2019-08-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsプロセッサ電源 / 省電力化 / 性能計測 / 電力推定 / 適応制御 / デジタルフィルタ / 性能カウンタ / デジタル電源 / アダプティブ制御 / 効率改善 / 計算機
Outline of Research at the Start

計算機の実運用環境下でのプロセッサ電源における電力損失の削減を研究の目的とする。特に発生時間比率が高い低負荷での電源効率悪化の改善を目指す。そのために、プロセッサ電源において、プロセッサの負荷状況に応じた効率制御を行うアダプティブ電源制御方式を提案する。また、プロセッサ電力消費の迅速な推定のためにプロセッサに内蔵される性能カウンタを応用する。電力推定精度向上のため、最適な性能カウンタ計測項目を検討する。さらに、アダプティブ電源制御の回路シミュレーションおよび試作ハードウェアでの検証を行い、各種情報システムの省電力化に向け、本方式が有効に寄与することを明らかにする。

Outline of Final Research Achievements

Processors of computers in operation tend to be light load due to such as data waiting. It is required to improve the efficiency of processor power supplies by optimal efficiency control according to the processor power load condition including the light workload. To resolve this issue, a processor power load estimation method for purpose of power supply control was considered. This study showed power estimation method by IIR digital filter based on the information output by processor's performance measurement circuit is effective.
To enable to estimate the power load with high accuracy using the performance measurement information, it is necessary to set optimal parameters for the application to be executed in the processor. This study also showed online parameter determination methods to enable the precise power estimation for the executed application. It was confirmed that power loss can be reduced by applying these power estimation methods to power supply control.

Academic Significance and Societal Importance of the Research Achievements

脱炭素社会実現に向け情報システムの省電力化は極めて重要な課題である。IoT(Internet of Things)、スマートフォン、サーバなどの情報機器が消費する電力は今後益々増加が予想され、これら計算機システムの省電力化が強く求められている。
本研究の成果は、計算機システム内で電力を供給する電源における電力損失を削減するための省電力化手法の実現に向け必要となる技術を確立するものとなる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (6 results) (of which Int'l Joint Research: 4 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Power Consumption Estimation by IIR digital filter for Computer Power Supply Efficiency Improvement2021

    • Author(s)
      S.Kawaguchi
    • Journal Title

      2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia)

      Volume: - Pages: 92-97

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Online parameter identification process for processor power estimation using performance monitoring information2021

    • Author(s)
      Shinichi. Kawaguchi
    • Journal Title

      23th European Conference on Power Electronics and Applications (EPE'21 ECCE Europe)

      Volume: - Pages: 1-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Power Consumption Estimation by IIR digital filter for Computer Power Supply Efficiency Improvement2021

    • Author(s)
      S.Kawaguchi
    • Organizer
      2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia) 2021年5月25日 IEEE
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Online parameter identification process for processor power estimation using performance monitoring information2021

    • Author(s)
      Shinichi. Kawaguchi
    • Organizer
      EPE'21 ECCE Europe 23rd European Conference on Power Electronics and Applications 2021年9月9日 EPE,IEEE
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Power Consumption Estimation by IIR digital filter for Computer Power Supply Efficiency Improvement2021

    • Author(s)
      河口進一
    • Organizer
      IEEE Energy Conversion Congress and Exposition Asia, 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Online parameter identification process for processor power estimation using performance monitoring information2021

    • Author(s)
      河口進一
    • Organizer
      IEEE The 23rd European Conference on Power Electronics and Applications
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] IIRディジタルフィルタを用いた性能計測情報による プロセッサ電力推定2020

    • Author(s)
      河口進一
    • Organizer
      電子情報通信学会 電子通信エネルギー技術研究会 (EE)
    • Related Report
      2020 Research-status Report
  • [Presentation] 性能計測情報を用いたプロセッサ電力推定における オンラインパラメータ決定手法2020

    • Author(s)
      河口進一
    • Organizer
      電子情報通信学会 電子通信エネルギー技術研究会 (EE)
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 電力予測装置、演算装置および電源制御システム2020

    • Inventor(s)
      河口進一
    • Industrial Property Rights Holder
      学校法人幾徳学園
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-138683
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 電力推定装置および電源制御システム2020

    • Inventor(s)
      河口進一
    • Industrial Property Rights Holder
      学校法人幾徳学園
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-217034
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report

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Published: 2019-09-03   Modified: 2023-01-30  

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