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Studies on Design of Reliable Asynchronous Circuits for Transient Fault Tolerance in the Field

Research Project

Project/Area Number 15K15961
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Computer system
Research InstitutionHiroshima City University

Principal Investigator

Iwagaki Tsuyoshi  広島市立大学, 情報科学研究科, 助教 (00397845)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords非同期式回路 / 高位合成 / 一時故障 / ソフトエラー / 劣化故障 / 遅延故障 / ディペンダブルコンピューティング / フォールトトレランス / 耐故障設計 / エラー検出 / エラー訂正 / 演算器バインディング / 4相2線式 / ハンドシェイク遅延 / スケジューリング / 演算チェイニング
Outline of Final Research Achievements

Asynchronous circuits have drawn attention as alternatives to synchronous ones which are widely used in current digital systems. This work has investigate high-level synthesis for enhancing the reliability of asynchronous circuits in the field where transient faults and aging-induced ones are likely to occur. More specifically, focusing on four-phase dual-rail asynchronous circuits that essentially have robustness against the delay-variation caused by transient faults or aging-induced ones, this work has devised operational unit binding for reducing handshake-delay or enhancing the tolerability to aging-induced faults in the circuits.

Academic Significance and Societal Importance of the Research Achievements

本研究の取り組みは,高信頼な非同期式回路を効率良く設計し実用化を進めるための基礎となるものである.民生機器や医療機器等,その用途によって要求される信頼度は様々であるが,本研究の成果を応用することで,用途に応じた「ちょうど良い」特性(面積・遅延・消費電力・信頼度等)を持つ非同期式回路を設計することが可能となる.これは,同期式回路と非同期式回路が混在した次世代のシステムの信頼性を低コストで高めることにもつながる.

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (3 results)

All 2017 2016 2015

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Impact of operational unit binding on aging-induced degradation in high-level synthesis for asynchronous systems2017

    • Author(s)
      Tsuyoshi Iwagaki, Kohta Itani, Hideyuki Ichihara and Tomoo Inoue
    • Organizer
      IEICE Technical Report (DC2016-78)
    • Place of Presentation
      東京
    • Year and Date
      2017-02-21
    • Related Report
      2016 Research-status Report
  • [Presentation] Exploration of four-phase dual-rail asynchronous RTL design for delay-robustness2016

    • Author(s)
      Tsuyoshi Iwagaki, Kohta Itani, Hideyuki Ichihara and Tomoo Inoue
    • Organizer
      17th IEEE Workshop on RTL and High Level Testing (WRTLT '16)
    • Place of Presentation
      広島
    • Year and Date
      2016-11-25
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] ハンドシェイク遅延を考慮した4相2線式非同期システムの高位合成におけるスケジューリングアルゴリズム2015

    • Author(s)
      猪谷孝太,岩垣剛,市原英行,井上智生
    • Organizer
      電子情報通信学会(デザインガイア,ディペンダブルコンピューティング研究会)
    • Place of Presentation
      長崎県勤労福祉会館(長崎県長崎市)
    • Year and Date
      2015-12-01
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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