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Low-power approximate arithmetic circuits without sacrificing computing performance, and their development methodology

Research Project

Project/Area Number 17K00088
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Computer system
Research InstitutionFukuoka University

Principal Investigator

Sato Toshinori  福岡大学, 工学部, 教授 (00322298)

Co-Investigator(Kenkyū-buntansha) 請園 智玲  福岡大学, 工学部, 助教 (50610060)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords低消費電力 / システムオンチップ / 計算機システム / 情報システム / ディペンダブル・コンピューティング / ディペンダブルコンピューティング
Outline of Final Research Achievements

We have studied approximate arithmetic circuits. First, we proposed an approximate adder, which can dynamically reconfigure its accuracy. Power consumption can be reduced according to the selected accuracy, and at the same time, the calculation speed can be improved. Furthermore, we improved this design so that the accuracy was improved with keeping energy efficiency. Regarding the improvement of calculation accuracy, it should be noted that the handling of negative numbers, which is a weak point of previously studied approximate adders, is taken into consideration. Next, we proposed an approximate multiplier, which can dynamically reconfigure its accuracy. Power consumption can be reduced according to the selected accuracy, and at the same time, the calculation speed can be improved. Furthermore, we proposed a fixed-accuracy approximate multiply-accumulate unit, which is an extension of the approximate multiplier.

Academic Significance and Societal Importance of the Research Achievements

IoT時代が到来し,様々なセンサから時々刻々とビッグデータが生産されている.クラウド上のサーバに集約されたセンサビッグデータをディープラーニング等のAI技術で解析することで,人類の生活をより豊かにする試みがなされている.しかしセンサデータをそのままネットワークに流すと莫大なエネルギーを要する.出来るだけエッヂ(末端)で処理し,データ量を少なくした上で通信を行うべきである.しかしエッヂでは電力供給に制約があるうえ,それが故に高い演算性能を期待できない.本研究成果の近似演算器を用いることで性能を犠牲にしないで消費エネルギーを削減でき,IoTとAIを応用するエッヂコンピューティングを実現できる.

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (41 results)

All 2020 2019 2018 2017 Other

All Journal Article (7 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (26 results) (of which Int'l Joint Research: 19 results) Book (1 results) Remarks (7 results)

  • [Journal Article] Exploiting Configurable Approximations for Tolerating Aging-induced Timing Violations2020

    • Author(s)
      SATO Toshinori、UKEZONO Tomoaki
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E103.A Issue: 9 Pages: 1028-1036

    • DOI

      10.1587/transfun.2019KEP0009

    • NAID

      130007893712

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2020-09-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An Accuracy-Configurable Adder for Low-Power Applications2020

    • Author(s)
      Tongxin Yang, Toshinori Sato, and Tomoaki Ukezono
    • Journal Title

      IEICE Transactions on Electronics

      Volume: E103.C Issue: 3 Pages: 68-76

    • DOI

      10.1587/transele.2019LHP0002

    • NAID

      130007804173

    • ISSN
      0916-8524, 1745-1353
    • Year and Date
      2020-03-01
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Low-Power Small-Area MAC Unit for Accuracy-Scalable Approximate Computing2020

    • Author(s)
      Tongxin Yang, Toshinori Sato, and Tomoaki Ukezono
    • Journal Title

      Fukuoka University Review of Technological Sciences

      Volume: 103・104 Pages: 1-8

    • NAID

      120006840673

    • Related Report
      2019 Research-status Report
    • Open Access
  • [Journal Article] Design and Analysis of Approximate Multipliers with a Tree Compressor2019

    • Author(s)
      Tongxin Yang, Tomoaki Ukezono, and Toshinori Sato
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E102.A Issue: 3 Pages: 532-543

    • DOI

      10.1587/transfun.E102.A.532

    • NAID

      130007607239

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2019-03-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Evaluations of CMA with Error Corrector in Image Processing Circuit2019

    • Author(s)
      Tomoaki Ukezono
    • Journal Title

      International Journal of Networking and Computing

      Volume: 9 Issue: 2 Pages: 301-317

    • DOI

      10.15803/ijnc.9.2_301

    • NAID

      130007680108

    • ISSN
      2185-2839, 2185-2847
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] CMAを用いた画像先鋭化処理専用回路の低消費電力化改善2019

    • Author(s)
      佐藤寿倫, ヨウドウキン, 請園智玲
    • Journal Title

      福岡大学工学集報

      Volume: 102 Pages: 43-49

    • NAID

      120006619954

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Journal Article] Design and Analysis of A Low-Power High-Speed Accuracy-Controllable Approximate Multiplier2018

    • Author(s)
      Tongxin Yang, Tomoaki Ukezono, and Toshinori Sato
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E101.A Issue: 12 Pages: 2244-2253

    • DOI

      10.1587/transfun.E101.A.2244

    • NAID

      130007538998

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2018-12-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] A Dynamically Configurable Approximate Array Multiplier with Exact Mode2020

    • Author(s)
      SATO Toshinori、UKEZONO Tomoaki
    • Organizer
      5th International Conference on Computer and Communication Systems
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation on Configurable Approximate Circuit for Aging-Induced Timing Violation Tolerance2019

    • Author(s)
      Toshinori Sato and Tomoaki Ukezono
    • Organizer
      24th IEEE Pacific Rim International Symposium on Dependable Computing
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Correcting Sign Calculation Errors in Configurable Approximations2019

    • Author(s)
      Toshinori Sato and Tomoaki Ukezono
    • Organizer
      15th IEEE Asia Pacific Conference on Circuits and Systems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] On Applications of Configurable Approximation to Irregular Voltage2019

    • Author(s)
      Toshinori Sato and Tomoaki Ukezono
    • Organizer
      5th IEEE Nordic Circuits and Systems Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tolerating Aging-Induced Timing Violations via Configurable Approximations2019

    • Author(s)
      Toshinori Sato and Tomoaki Ukezono
    • Organizer
      8th IEEE Global Conference on Consumer Electronics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] An Approximate Multiply-Accumulate Unit with Low Power and Reduced Area2019

    • Author(s)
      Tongxin Yang, Toshinori Sato, and Tomoaki Ukezono
    • Organizer
      IEEE Computer Society Annual Symposium on VLSI
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 動的電力制御によるサイドチャネル対策の検討2019

    • Author(s)
      請園智玲
    • Organizer
      電子情報通信学会ハードウェアセキュリティ研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Design of a Low-Power and Small-Area Approximate Multiplier Using First the Approximate and Then the Accurate Compression Method2019

    • Author(s)
      Tongxin Yang, Tomoaki Ukezono, and Toshinori Sato
    • Organizer
      29th ACM Great Lakes Symposium on VLSI
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Low-Power Approximate Multiply-Add Unit2019

    • Author(s)
      Tongxin Yang, Toshinori Sato, and Tomoaki Ukezono
    • Organizer
      2nd International Symposium on Devices, Circuits and Systems
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] カラー画像を対象とした近似加算器を用いた画像先鋭化ハードウェアの評価2019

    • Author(s)
      請園智玲, 福田結菜, 佐藤寿倫
    • Organizer
      情報処理学会 第81回全国大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 手書き数字認識ニューラルネットワークにおける近似乗算器の評価2019

    • Author(s)
      佐藤寿倫, 請園智玲
    • Organizer
      情報処理学会 第81回全国大会
    • Related Report
      2018 Research-status Report
  • [Presentation] An Error Corrector for Dynamically Accuracy-Configurable Approximate Adder2018

    • Author(s)
      Tomoaki Ukezono
    • Organizer
      6th International Workshop on Computer Systems and Architectures
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Approximate Adder Generation for Image Processing Using Convolutional Neural Network2018

    • Author(s)
      Ryuta Ishida, Toshinori Sato, and Tomoaki Ukezono
    • Organizer
      15th International SoC Design Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Exploiting Configurability for Correct Sign Calculation in an Approximate Adder2018

    • Author(s)
      Toshinori Sato and Tomoaki Ukezono
    • Organizer
      15th International SoC Design Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Low-Power and Small-Area Multiplier for Accuracy-Scalable Approximate Computing2018

    • Author(s)
      Hiroyuki Baba, Tongxin Yang, Masahiro Inoue, Kaori Tajima, Tomoaki Ukezono and Toshinori Sato
    • Organizer
      IEEE Computer Society Annual Symposium on VLSI
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Low-Power Yet High-Speed Configurable Adder for Approximate Computing2018

    • Author(s)
      Tongxin Yang, Tomoaki Ukezono, and Toshinori Sato
    • Organizer
      51st International Symposium on Circuits and Systems
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] CMAを用いた画像先鋭化回路の低消費電力化2018

    • Author(s)
      田島加織, 井上晶仁, 馬場裕之, Tongxin Yang, 請園智玲, 佐藤寿倫
    • Organizer
      電子情報通信学会 VLD研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] A Low-Power High-Speed Accuracy-Controllable Approximate Multiplier Design2018

    • Author(s)
      Tongxin Yang, Tomoaki Ukezono, and Toshinori Sato
    • Organizer
      23rd Asia and South Pacific Design Automation Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Research on Accuracy-Configurable Architecture for Applications and Systems2018

    • Author(s)
      Tongxin Yang, Toshinori Sato
    • Organizer
      Student Research Forum at 23rd Asia and South Pacific Design Automation Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Low-Power Configurable Adder for Approximate Applications2018

    • Author(s)
      Tongxin Yang, Tomoaki Ukezono, and Toshinori Sato
    • Organizer
      19th International Symposium on Quality Electronic Design
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Carry-Predicting Full Adder for Accuracy-Scalable Computing2018

    • Author(s)
      Hiroyuki Baba, Tongxin Yang, Masahiro Inoue, Kaori Tajima, Tomoaki Ukezono, and Toshinori Sato
    • Organizer
      Workshop on Synthesis and System Integration of Mixed Information Technologies
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Research on Accuracy-Configurable Architecture for Applications and Systems2018

    • Author(s)
      Tongxin Yang, Toshinori Sato
    • Organizer
      Ph.D Forum at 21st Design, Automation and Test in Europe Conference and Exhibition
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Low-Power and High-Speed Approximate Multiplier Design with a Tree Compressor,2017

    • Author(s)
      Tongxin Yang, Tomoaki Ukezono, and Toshinori Sato
    • Organizer
      35th International Conference on Computer Design
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 動的な桁上げマスクを可能にする近似加算器の特性評価2017

    • Author(s)
      Tongxin Yang, 請園智玲, 佐藤寿倫
    • Organizer
      電子情報通信学会 基礎・境界ソサイエティ/NOLTAソサイエティ大会
    • Related Report
      2017 Research-status Report
  • [Presentation] ガウシアンカーネルの近似値化によるハードウェア単純化の検討2017

    • Author(s)
      井上晶仁, 田島加織, Tongxin Yang, 請園智玲, 佐藤寿倫
    • Organizer
      第70回 電気・情報関係学会九州支部連合大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 近似乗算器の内部構成に関する検討2017

    • Author(s)
      井上晶仁, 田島加織, 馬場裕之, Tongxin Yang, 請園智玲, 佐藤寿倫
    • Organizer
      電子情報通信学会 VLD研究会
    • Related Report
      2017 Research-status Report
  • [Book] センサフュージョン技術の開発と応用事例2019

    • Author(s)
      佐藤寿倫, Tongxin Yang, 請園智玲, 他
    • Total Pages
      528
    • Publisher
      技術情報協会
    • ISBN
      9784861047367
    • Related Report
      2018 Research-status Report
  • [Remarks] システムアーキテクチャ研究室

    • URL

      https://uarch.jimdofree.com/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Remarks] Systems Architecture Laboratory

    • URL

      https://uarch.wordpress.com/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report 2018 Research-status Report 2017 Research-status Report
  • [Remarks] Toshinori Sato

    • URL

      https://www.researchgate.net/profile/Toshinori-Sato-2

    • Related Report
      2020 Annual Research Report
  • [Remarks] Tomoaki Ukezono

    • URL

      https://www.researchgate.net/profile/Tomoaki-Ukezono

    • Related Report
      2020 Annual Research Report
  • [Remarks] Toshinori Sato

    • URL

      https://www.researchgate.net/profile/Toshinori_Sato

    • Related Report
      2019 Research-status Report 2018 Research-status Report
  • [Remarks] Tomoaki Ukezono

    • URL

      https://www.researchgate.net/profile/Tomoaki_Ukezono

    • Related Report
      2019 Research-status Report
  • [Remarks] システムアーキテクチャ研究室

    • URL

      https://uarch.jimdo.com/

    • Related Report
      2018 Research-status Report 2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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