• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Investigation of a High-performance Stochastic Link-Fault Tolerant Routing Method in Torus with Wide Dimensions

Research Project

Project/Area Number 20K11729
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 60040:Computer system-related
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Kaneko Keiichi  東京農工大学, 工学(系)研究科(研究院), 教授 (20194904)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords高信頼性システム / ディペンダブルコンピューティング / 高信頼システム / 耐故障経路選択 / トーラス / メッシュ
Outline of Research at the Start

超並列計算機は,数百万を超えるプロセッサをネットワークで結合し,プロセッサ同士が通信しつつ,協調して並列処理を行う.超並列計算機では,要素数が膨大なため,故障要素の存在を前提として運用することが不可欠である.超並列計算機の耐故障経路選択では,各非故障プロセッサが圧縮された故障情報を持つ手法が有効である.申請者らによる先行研究では,超並列計算機に対する相互結合網の代表的な位相であるトーラスに焦点を当て,高次元のトーラスにおいて高い性能を発揮する耐故障経路選択手法を提案した.本研究では,これをさらに改善して,低次元から高次元まで幅広い次元に対応して高性能を達成可能な手法とし,その性能を検証する.

Outline of Final Research Achievements

In the torus, assuming that a node receives a message from an adjacent node, we developed a method that calculates the estimated probability of delivery of the message to the target node excluding the effect from the adjacent node. Then, the estimated probabilities are exchanged between the adjacent nodes. By using the exchanged estimated probabilities of adjacent nodes, the routing algorithm can avoid entering dead ends. Currently, we are implementing the method, and planning to conduct computer experiments. In addition, we have clarified the basic properties such as the shortest path routing and the crossing number of the torus and its variances: bijective connection graphs, bicubes, folded hypercubes, and Moebius cubes. Regarding the topologies, we have develop fault-tolerant algorithms including disjoint paths routing algorithms.

Academic Significance and Societal Importance of the Research Achievements

トーラスにおける耐故障経路選択に関する先行研究では,2, 3次元の低次元において専用の耐故障経路選択手法が提案されており,ある程度の性能を示している.一方,超並列システムである「京」や「富岳」では,より高い6次元が採用されている.本研究では,高い次元のトーラスにも適用可能な制限された大域情報である有向到達確率を新たに設計して活用するアルゴリズムを開発した.その成果は,独創的かつ画期的である.トーラスは,超並列システムの相互結合網として非常に良く利用されている位相であるため,本研究による成果は,社会の情報インフラに対して大きなインパクトを与える.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] University of Nevada, Reno(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ハノイ科学技術大学(ベトナム)

    • Related Report
      2020 Research-status Report
  • [Journal Article] On the Crossing Number of a Torus Network2023

    • Author(s)
      Bossard, Antoine, Keiichi Kaneko, and Frederick C. Harris, Jr.
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E106.A Issue: 1 Pages: 35-44

    • DOI

      10.1587/transfun.2021EAP1144

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2023-01-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Minimal Paths in a Bicube2022

    • Author(s)
      Okada, Masaaki and Keiichi Kaneko
    • Journal Title

      IEICE Transactions on Information and Systems

      Volume: E105.D Issue: 8 Pages: 1383-1392

    • DOI

      10.1587/transinf.2021EDP7235

    • ISSN
      0916-8532, 1745-1361
    • Year and Date
      2022-08-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Set-to-set Disjoint Path Routing in Bijective Connection Graphs2022

    • Author(s)
      Kaneko, Keiichi, Antoine Bossard, and Frederick C. Harris
    • Journal Title

      IEEE Access

      Volume: 10 Pages: 72731-72742

    • DOI

      10.1109/access.2022.3188783

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Set-to-Set Disjoint Paths Problem in Mobius Cubes2022

    • Author(s)
      Ichida, Hiroyuki and Keiichi Kaneko
    • Journal Title

      IEEE Access

      Volume: 10 Pages: 83075-83084

    • DOI

      10.1109/access.2022.3197288

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cluster-Fault Tolerant Routing in a Torus2020

    • Author(s)
      Bossard Antoine、Kaneko Keiichi
    • Journal Title

      Sensors

      Volume: 20 Issue: 11 Pages: 3286-3286

    • DOI

      10.3390/s20113286

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pairwise Disjoint Paths Routing in Tori2020

    • Author(s)
      Kaneko Keiichi、Nguyen Son Van、Binh Hyunh Thi Thanh
    • Journal Title

      IEEE Access

      Volume: 8 Pages: 192206-192217

    • DOI

      10.1109/access.2020.3032684

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Set-to-Set Disjoint Paths in a Folded Hypercube2021

    • Author(s)
      Hiroyuki Ichida and Keiichi Kaneko
    • Organizer
      2021 International Conference on Parallel and Distributed Processing Techniques and Applications
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Shortest-path Routing Algorithm in Bicubes2020

    • Author(s)
      Masaaki Okada and Keiichi Kaneko
    • Organizer
      2020 International Conference on Parallel and Distributed Processing Techniques and Applications
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi