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

Research on quadruple precision operation usable for scientific computation

Research Project

Project/Area Number 21500031
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Software
Research InstitutionThe University of Tokyo

Principal Investigator

KANADA Yasumasa  東京大学, 情報基盤センター, 教授 (90115551)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords4倍長精度演算 / 数学定数 / 平方根 / 数値計算アルゴリズム / 誤差解析 / 祖結合並列計算 / 将棋プレーヤー / 集団学習 / 評価関数 / 並列化 / Bagging / 乱数合議 / アルゴリズム / 4倍長精度計算 / 素数 / double-double精度 / Brun定数 / Twin prime / gcc
Research Abstract

Application of quadruple precision numerical routines which was developed, evaluated and optimized through this research, we had computed Brun's constant up to 9-th digit following decimal point. Newly found number is not know until the completion of the Brun's number. Papers on this topic were prepared and submitted for the publication. Here, Brun's constant is the constant computed by the sum of(1/p+1/(p+2)) where p(>=2) and p+2 is prime numbers.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (10 results)

All 2012 2011 2010

All Presentation (8 results) Book (2 results)

  • [Presentation] スーパーコンピューターの過去・現在・未来2012

    • Author(s)
      金田康正
    • Organizer
      大中先生退職記念研究集会
    • Place of Presentation
      岡山理科大学
    • Year and Date
      2012-03-06
    • Related Report
      2011 Final Research Report
  • [Presentation] スーパーコンピューターの過去・現在・未来2012

    • Author(s)
      金田康正
    • Organizer
      大中先生退職記念研究集会
    • Place of Presentation
      岡山理科大学(招待講演)
    • Year and Date
      2012-03-06
    • Related Report
      2011 Annual Research Report
  • [Presentation] 合議のための多様な将棋プレイヤの集団学習2011

    • Author(s)
      鈴木洋平、三浦誠、金田康正
    • Organizer
      第16回ゲームプログラミングワークショップ
    • Place of Presentation
      駿河台学園セミナーハウス(箱根)
    • Year and Date
      2011-11-04
    • Related Report
      2011 Final Research Report
  • [Presentation] 合議のための多様な将棋プレイヤの集団学習2011

    • Author(s)
      鈴木洋平、三輪誠、金田康正
    • Organizer
      第16回ゲームプログラミングワークショップ
    • Place of Presentation
      駿河台学園セミナーハウス
    • Year and Date
      2011-11-04
    • Related Report
      2011 Annual Research Report
  • [Presentation] スーパーコンピューターの過去・現在・未来2011

    • Author(s)
      金田康正
    • Organizer
      地球流体データ解析・数値計算ワークショップ
    • Place of Presentation
      東京大学理学部3号館320号室
    • Year and Date
      2011-03-08
    • Related Report
      2011 Final Research Report
  • [Presentation] スーパーコンピューターの過去・現在・未来2011

    • Author(s)
      金田康正
    • Organizer
      地球流体データ解析・数値計算ワークショップ
    • Place of Presentation
      東京大学理学部三号館320号室
    • Year and Date
      2011-03-08
    • Related Report
      2010 Annual Research Report
  • [Presentation] 計算機科学が拓く未来2010

    • Author(s)
      金田康正
    • Organizer
      電子通信学会
    • Place of Presentation
      ベネッセハウス(直島)
    • Year and Date
      2010-03-07
    • Related Report
      2011 Final Research Report
  • [Presentation] 計算機科学が拓く未来2010

    • Author(s)
      金田康正
    • Organizer
      電子情報通信学会
    • Place of Presentation
      ベネッセハウス(直島)
    • Year and Date
      2010-03-07
    • Related Report
      2009 Annual Research Report
  • [Book] 並列数値処理高速化と性能向上のために(並列処理シリーズ)2010

    • Author(s)
      金田康正
    • Total Pages
      256
    • Publisher
      コロナ社
    • Related Report
      2011 Final Research Report
  • [Book] 並列数値処理-高速化と性能向上のために-<並列数値処理シリーズ9>2010

    • Author(s)
      金田康正編著
    • Total Pages
      256
    • Publisher
      コロナ社
    • Related Report
      2010 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi