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Iwashita, Takeshi

Academic Center for Computing and Media Studies (ACCMS) Professor

Iwashita, Takeshi
list
    Last Updated :2024/04/22

    Basic Information

    Affiliated programs (koza)

    • Graduate School of Informatics, 通信情報システムコース 情報通信基盤講座, 教授

    Email Address

    • Email Address

      iwashita.takeshi.7mkyoto-u.ac.jp

    Professional Memberships

    • 情報処理学会
    • 日本AEM学会
    • The Institute of Electrical and Electronics Engineers
    • 電気学会
    • 応用物理学会
    • 日本応用数理学会
    • SIAM

    Academic Degree

    • 23 Mar. 1995
      京都大学修士(工学)
    • 23 Mar. 1998
      京都大学博士(工学)

    Academic Resume (Graduate Schools)

    • 京都大学, 大学院工学研究科博士後期課程電気工学専攻, 修了
    • 京都大学, 大学院工学研究科修士課程電気工学専攻, 修了

    Academic Resume (Undergraduate School/Majors)

    • 京都大学, 工学部電気工学科, 卒業

    Research History

    • From Apr. 2024, To Present
      Kyoto University, Academic Center for Computing and Media Studies, 副センター長
    • From Sep. 2023, To Present
      Kyoto University, 学術情報メディアセンター, 教授
    • From Apr. 2017, To Sep. 2023
      Hokkaido University, Information Initiative Center, Vice director
    • From Apr. 2014, To Sep. 2023
      Hokkaido University, Information Initiative Center, Professor
    • From Oct. 2003, To Mar. 2014
      Kyoto University, Academic Center for Computing and Media Studies, 准教授/助教授
    • From Jan. 2000, To Oct. 2003
      Kyoto University, 大型計算機センター/学術情報メディアセンター, 助手
    • From Apr. 1998, To Dec. 1999
      Kyoto University, Graduate School of Engineering, リサーチアソシエイト(JSPS-PD)

    ID,URL

    researchmap URL

    list
      Last Updated :2024/04/22

      Research

      Research Interests

      • ハイパフォーマンスコンピューティング
      • 線形計算
      • 並列処理
      • 電磁界解析
      • Paralell computing
      • Electromagnetic field nalysis

      Research Areas

      • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electrical power engineering
      • Informatics, Information theory

      Papers

      • Advantage of bulk lightning models for predicting lightning frequency over Japan
        Takumi Tomioka; Yousuke Sato; Syugo Hayashi; Satoru Yoshida; Takeshi Iwashita
        Progress in Earth and Planetary Science, Dec. 2023
      • Efficient Preconditioning Technique for Frequency Domain Finite Element Simulation of the Darwin Model
        Kento Yoshida; Takeshi Mifune; Tetsuji Matsuo; Hiroyuki Kaimori; Akihisa Kameari; Takeshi Iwashita
        IEEE Transactions on Magnetics, 2023
      • Parallel-in-Space-and-Time Finite-Element Method for Time-Periodic Magnetic Field Problems with Hysteresis
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita
        IEEE Transactions on Magnetics, Aug. 2023
      • Subspace Correction Preconditioning for Solving a Sequence of Asymmetric Linear Systems Using the Bi-CGSTAB Method
        Hirotoshi Tamori; Takeshi Fukaya; Takeshi Iwashita
        Journal of Information Processing, Dec. 2023
      • Numerical Behavior of Mixed Precision Iterative Refinement Using the BiCGSTAB Method
        Yingqi Zhao; Takeshi Fukaya; Takeshi Iwashita
        Journal of Information Processing, Dec. 2023
      • A novel ILU preconditioning method with a block structure suitable for SIMD vectorization.
        Kengo Suzuki; Takeshi Fukaya; Takeshi Iwashita
        J. Comput. Appl. Math., Feb. 2023, Peer-reviewed
      • Numerical Investigation into the Mixed Precision GMRES(m) Method Using FP64 and FP32
        Journal of Information Processing, 28 Jul. 2022, Peer-reviewed
      • Parallel-in-space-and-time finite-element analysis of electric machines using time step overlapping in a massively parallel computing environment
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita
        COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING, Jul. 2022, Peer-reviewed
      • Convergence Acceleration of Preconditioned CG Solver Based on Error Vector Sampling for a Sequence of Linear Systems
        Takeshi Iwashita; Kota Ikehara; Takeshi Fukaya; Takeshi Mifune
        Numerical Linear Algebra with Applications, Dec. 2023
      • A New AINV Preconditioner for the CG Method in Hybrid CPU-GPU Computing Environment
        Kengo Suzuki; Takeshi Fukaya; Takeshi Iwashita
        Journal of Information Processing, 2022, Peer-reviewed
      • Comparison of Parallel-in-Space-and-Time Finite-Element Methods for Magnetic Field Analysis of Electric Machines
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        IEEE TRANSACTIONS ON MAGNETICS, Jun. 2021, Peer-reviewed
      • Accelerating the SpMV kernel on standard CPUs by exploiting the partially diagonal structures.
        Takeshi Fukaya; Koki Ishida; Akie Miura; Takeshi Iwashita; Hiroshi Nakashima
        CoRR, 2021
      • An Integer Arithmetic-Based Sparse Linear Solver Using a GMRES Method and Iterative Refinement
        Takeshi Iwashita; Kengo Suzuki; Takeshi Fukaya
        11th IEEE/ACM Workshop on Latest Advances in Scalable Algorithms for Large-Scale Systems(ScalA@SC), Nov. 2020, Peer-reviewed, Corresponding author
      • Hierarchical block multi-color ordering: a new parallel ordering method for vectorization and parallelization of the sparse triangular solver in the ICCG method.
        Takeshi Iwashita; Senxi Li; Takeshi Fukaya
        CCF Trans. High Perform. Comput., Apr. 2020, Lead author, Corresponding author
      • Parallel-in-Space-and-Time Finite-Element Analysis of Electric Machines using Domain Decomposition and Time-Periodic Finite-Element Method
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        Proc. 19th Biennial Conf. Electromagnetic Field Computation, Apr. 2020, Peer-reviewed
      • Effect of Mixed Precision Computing on H-Matrix Vector Multiplication in BEM Analysis.
        Rise Ooi; Takeshi Iwashita; Takeshi Fukaya; Akihiro Ida; Rio Yokota
        HPCAsia2020, 2020, Peer-reviewed
      • Parallel finite-element method using domain decomposition and Parareal for transient motor starting analysis
        Takahashi Yasuhito; Fujiwara Koji; Iwashita Takeshi; Nakashima Hiroshi
        COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING, 02 Sep. 2019, Peer-reviewed
      • Large-scale electromagnetic field analyses of coils wound with coated conductors using a current-vector-potential formulation with a thin-strip approximation
        Mifune Takashi; Tominaga Naoki; Sogabe Yusuke; Mizobata Yudai; Yasunaga Masahiro; Ida Akihiro; Iwashita Takeshi; Amemiya Naoyuki
        SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Sep. 2019, Peer-reviewed
      • Parallel TP-EEC Method based on Polyphase Time-Periodic Condition for Magnetic Field Analysis of Induction Motors
        Yasuhito Takahashi; Koji Fujiwara; Tadashi Tokumasu; Takeshi Iwashita; Hiroshi Nakashima
        Proc. Intl. Conf. Computation on Electromagnetic Fields, Jul. 2019, Peer-reviewed
      • Acceleration of Transient Non-Linear Electromagnetic Field Analyses Using an Automated Subspace Correction Method
        Iwashita Takeshi; Kawaguchi Shigeru; Mifune Takeshi; Matsuo Tetsuji
        IEEE TRANSACTIONS ON MAGNETICS, Jun. 2019, Peer-reviewed
      • Parallel Finite-Element Method Based on Space-Time Domain Decomposition for Magnetic Field Analysis of Electric Machines
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        IEEE Trans. Magnetics, Feb. 2019, Peer-reviewed
      • Enhancement of Algebraic Block Multi-Color Ordering for ILU Preconditioning and Its Performance Evaluation in Preconditioned GMRES Solver.
        Senxi Li; Takeshi Iwashita; Takeshi Fukaya
        JIP, 2019, Peer-reviewed
      • QR Factorization of Block Low-rank Matrices with Weak Admissibility Condition.
        Akihiro Ida; Hiroshi Nakashima; Tasuku Hiraishi; Ichitaro Yamazaki; Rio Yokota; Takeshi Iwashita
        JIP, 2019, Peer-reviewed
      • Effect of Mixed Precision Computing on H-Matrix Vector Multiplication in BEM Analysis.
        Rise Ooi; Takeshi Iwashita; Takeshi Fukaya; Akihiro Ida; Rio Yokota
        CoRR, 2019, Peer-reviewed
      • Parallel Finite Element Analysis of Transient Motor Starting Using Domain Decomposition and Parareal
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        Proc. Intl. IGTE Symp., Sep. 2018, Peer-reviewed
      • Cache Blocking of Sparse-Matrix Vector Multiplication with DIA/CRS Hybrid Format
        Yukiteru Ishida; Rie Miura; Takeshi Fukaya; Takeshi Iwashita; Hiroshi Nakashima
        Proc, Cross-disciplinary WS. Computing Systems, Infrastructures, and Programming, May 2018, Peer-reviewed
      • Application of hierarchical matrices to large-scale electromagnetic field analyses of coils wound with coated conductors
        Naoki Tominaga; Takeshi Mifune; Akihiro Ida; Yusuke Sogabe; Takeshi Iwashita; Naoyuki Amemiya
        IEEE Transactions on Applied Superconductivity, 01 Apr. 2018, Peer-reviewed
      • Application of improved H-matrices in micromagnetic simulations of spin torque oscillator
        Akihiro Ida; Tadashi Ataka; Yasuhito Takahashi; Takeshi Mifune; Takeshi Iwashita; Atsushi Furuya
        IEEE Transactions on Magnetics, 01 Mar. 2018, Peer-reviewed
      • Time-space tiling with tile-level parallelism for the 3D FDTD method
        Takeshi Fukaya; Takeshi Iwashita
        ACM International Conference Proceeding Series, 28 Jan. 2018, Peer-reviewed
      • Steady-State Analysis of Hysteretic Magnetic Field Problems Using a Parallel Time-Periodic Explicit-Error Correction Method
        Yasuhito Takahashi; Junji Kitao; Koji Fujiwara; Akira Ahagon; Tetsuji Matsuo; Takeshi Iwashita; Hiroshi Nakashima
        IEEE TRANSACTIONS ON MAGNETICS, Jun. 2017, Peer-reviewed
      • Software Framework for Parallel BEM Analyses with H-matrices Using MPI and OpenMP
        Takeshi Iwashita; Akihiro Ida; Takeshi Mifune; Yasuhito Takahashi
        INTERNATIONAL CONFERENCE ON COMPUTATIONAL SCIENCE (ICCS 2017), 2017, Peer-reviewed
      • Automatic mapping operator construction for subspace correction method to solve a series of linear systems
        Iwashita Takeshi; Kawaguchi Shigeru; Mifune Takeshi; Matsuo Tetsuji
        JSIAM LETTERS, 2017, Peer-reviewed
      • From FLOPS to BYTES: Disruptive change in high-performance computing towards the post-moore era
        Satoshi Matsuoka; Hideharu Amano; Kengo Nakajima; Koji Inoue; Tomohiro Kudoh; Naoya Maruyama; Kenjiro Taura; Takeshi Iwashita; Takahiro Katagiri; Toshihiro Hanawa; Toshio Endo
        2016 ACM International Conference on Computing Frontiers - Proceedings, 16 May 2016, Peer-reviewed
      • Variable Preconditioning of Krylov Subspace Methods for Hierarchical Matrices With Adaptive Cross Approximation
        Akihiro Ida; Takeshi Iwashita; Takeshi Mifune; Yasuhito Takahashi
        IEEE TRANSACTIONS ON MAGNETICS, Mar. 2016, Peer-reviewed
      • Parallel Finite-Element Analysis of Rotating Machines Based on Domain Decomposition Considering Nonconforming Mesh Connection
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        IEEE TRANSACTIONS ON MAGNETICS, Mar. 2016, Peer-reviewed
      • Fast Transient Eddy-Current Analysis Using Error Correction Method for Series of Linear Systems
        Shigeru Kawaguchi; Takeshi Mifune; Takeshi Iwashita; Tetsuji Matsuo
        2016 IEEE CONFERENCE ON ELECTROMAGNETIC FIELD COMPUTATION (CEFC), 2016, Peer-reviewed
      • Steady-State Analysis of Hysteretic Magnetic Field Problems Using Parallel TP-EEC Method
        Y. Takahashi; J. Kitao; K. Fujiwara; A. Ahagon; T. Matsuo; T. Iwashita; H. Nakashima
        2016 IEEE CONFERENCE ON ELECTROMAGNETIC FIELD COMPUTATION (CEFC), 2016, Peer-reviewed
      • ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications on Post-Peta-Scale Supercomputers with Automatic Tuning (AT)
        Kengo Nakajima; Masaki Satoh; Takashi Furumura; Hiroshi Okuda; Takeshi Iwashita; Hide Sakaguchi; Takahiro Katagiri; Masaharu Matsumoto; Satoshi Ohshima; Hideyuki Jitsumoto; Takashi Arakawa; Futoshi Mori; Takeshi Kitayama; Akihiro Ida; Miki Y. Matsuo
        OPTIMIZATION IN THE REAL WORLD: TOWARD SOLVING REAL-WORLD OPTIMIZATION PROBLEMS, 2016, Peer-reviewed
      • Parallel TP-EEC Method Based on Phase Conversion for Time-Periodic Nonlinear Magnetic Field Problems
        Yasuhito Takahashi; Tadashi Tokumasu; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        IEEE TRANSACTIONS ON MAGNETICS, Mar. 2015, Peer-reviewed
      • Analysis of induced electric field in human body by utility power frequency magnetic field using parallel fast multipole-accelerated boundary element method
        Yasuhito Takahashi; Akira Ahagon; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        IET SCIENCE MEASUREMENT & TECHNOLOGY, Mar. 2015, Peer-reviewed
      • A Fill-In Strategy for Fast ICCG Solver with SIMD Vectorization
        Takeshi Iwashita; Naokazu Takemura; Hiroshi Nakashima
        Annual Meeting on Advanced Computing System and Infrastructure, Jan. 2015, Peer-reviewed
      • A new fill-in strategy for IC factorization preconditioning considering SIMD instructions
        Takeshi Iwashita; Naokazu Takemura; Akihiro Ida; Hiroshi Nakashima
        2015 IEEE TRUSTCOM/BIGDATASE/ISPA, VOL 3, 2015, Peer-reviewed
      • Improvement of Hierarchical Matrices with Adaptive Cross Approximation for Large-Scale Simulation
        Akihiro Ida; Takeshi Iwashita; Makiko Ohtani; Kazuro Hirahara
        Journal of Information Processing, 2015, Peer-reviewed
      • Automatic Parameter Tuning of Three-Dimensional Tiled FDTD Kernel
        Takeshi Minami; Motoharu Hibino; Tasuku Hiraishi; Takeshi Iwashita; Hiroshi Nakashima
        HIGH PERFORMANCE COMPUTING FOR COMPUTATIONAL SCIENCE - VECPAR 2014, 2015, Peer-reviewed
      • SIMD Implementation of a Multiplicative Schwarz Smoother for a Multigrid Poisson Solver on an Intel Xeon Phi Coprocessor
        Masatoshi Kawai; Takeshi Iwashita; Hiroshi Nakashima
        HIGH PERFORMANCE COMPUTING FOR COMPUTATIONAL SCIENCE - VECPAR 2014, 2015, Peer-reviewed
      • Parallel Hierarchical Matrices with Adaptive Cross Approximation on Symmetric Multiprocessing Clusters
        Akihiro Ida; Takeshi Iwashita; Takeshi Mifune; Yasuhito Takahashi
        Journal of Information Processing, 01 Oct. 2014, Peer-reviewed
      • On the practical implementation of ICCG method solving real symmetric linear equation arising in edge-based finite element analysis
        Yoshifumi Okamoto; Yasuhito Takahashi; Koji Fujiwara; Akira Ahagon; Takeshi Mifune; Takeshi Iwashita
        IEEJ Transactions on Power and Energy, 2014, Peer-reviewed
      • Performance Improvement of Three-Dimensional Tiled FDTD Kernel Based on Automatic Parameter Tuning
        Takeshi Minami; Motoharu Hibino; Tasuku Hiraishi; Takeshi Iwashita; Hiroshi Nakashima
        Proc. Intl. Conf. Computation on Electromagnetic Fields, Jul. 2013, Peer-reviewed
      • Parallel Performance of Multithreaded ICCG Solver Based on Algebraic Block Multicolor Ordering in Finite Element Electromagnetic Field Analyses
        Kazuki Semba; Koji Tani; Takashi Yamada; Takeshi Iwashita; Yasuhito Takahashi; Hiroshi Nakashima
        IEEE TRANSACTIONS ON MAGNETICS, May 2013, Peer-reviewed
      • Effectiveness of iterative method with folded preconditioning for practical finite element electromagnetic field analyses
        Kazuki Semba; Takashi Yamada; Takeshi Iwashita; Hiroshi Nakashima; Yasuhito Takahashi; Takeshi Mifune
        IEEJ Transactions on Industry Applications, 2013, Peer-reviewed
      • Temporal and Spatial Tiling Method without Redundant Calculations for Three-dimensional FDTD Method
        Takeshi Minami; Takeshi Iwashita; Hiroshi Nakashima
        情報処理学会論文誌. コンピューティングシステム, Jan. 2013, Peer-reviewed
      • Parallel Smoother Based on Block Red-Black Ordering for Multigrid Poisson Solver
        Masatoshi Kawai; Takeshi Iwashita; Hiroshi Nakashima; Osni Marques
        HIGH PERFORMANCE COMPUTING FOR COMPUTATIONAL SCIENCE - VECPAR 2012, 2013, Peer-reviewed
      • Parallel Performance of the Multi-threaded ICCG Solver in Electromagnetic Finite Element Analyses on the Latest Processors
        K. Semba; K. Tani; T. Yamada; T. Iwashita; Y. Takahashi; H. Nakashima
        PIERS 2013 STOCKHOLM: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, 2013, Peer-reviewed
      • Multilingualization Based on RPC for Job-level Parallel Script Language, Xcrypt
        Masaru Ueno; Tasuku Hiraishi; Motoharu Hibino; Takeshi Iwashita; Horoshi Nakashima
        IPSJ Transactions on Programming, 2013, Peer-reviewed
      • Time-domain parallel finite-element method for fast magnetic field analysis of induction motors
        Yasuhito Takahashi; Tadashi Tokumasu; Masafumi Fujita; Takeshi Iwashita; Hiroshi Nakashima; Shinji Wakao; Koji Fujiwara
        IEEE Transactions on Magnetics, 2013, Peer-reviewed
      • Automatic determination of acceleration factor based on residual and functional in shifted ICCG method for 3-D electromagnetic field analyses
        Junji Kitao; Yasuhito Takahashi; Koji Fujiwara; Takeshi Mifune; Takeshi Iwashita
        IEEE Transactions on Magnetics, 2013, Peer-reviewed
      • Parallel Multigrid Poisson Solver Based on Block Red-black Ordering
        河合 直聡; 岩下 武史; 中島 浩
        情報処理学会論文誌 論文誌トランザクション, Oct. 2012, Peer-reviewed
      • Design of Authentication System for High Performance Distributed Computing Environment
        Kento Aida; Manabu Higashida; Eisaku Sakane; Hirofumi Amano; Katsushi Kobayashi; Masaharu Munetomo; Ryusuke Egawa; Osamu Tatebe; Yoshikazu Kamoshida; Shin'ichiro Takizawa; Toru Nagai; Takeshi Iwashita; Yutaka Ishikawa
        情報処理学会論文誌. コンピューティングシステム, Oct. 2012, Peer-reviewed
      • Xcrypt in Lisp: A Scripting System for Job Level Parallel Programming in Lisp
        Tasuku Hiraishi; Masaru Ueno; Tatsuya Abe; Takeshi Iwashita; Hiroshi Nakashima
        Proc. Intl. Lisp Conf., Oct. 2012, Peer-reviewed
      • Large-scale time-harmonic electromagnetic field analysis using a multigrid solver on a distributed memory parallel computer
        Takeshi Iwashita; Yu Hirotani; Takeshi Mifune; Toshio Murayama; Hideki Ohtani
        PARALLEL COMPUTING, Sep. 2012, Peer-reviewed
      • Xcrypt: a Perl Extension for Job Level Parallel Programming
        Tasuku Hiraishi; Tatsuya Abe; Takeshi Iwashita; Hiroshi Nakashima
        Proc. Intl. WS. High-performance Infrastructure for Scalable Tools, Jun. 2012, Peer-reviewed
      • ブロック化赤−黒順序付け法による並列マルチグリッドポアソンソルバ
        河合直聡; 岩下武史; 中島浩
        情報処理学会論文誌:コンピューティングシステム, May 2012, Peer-reviewed
      • Parallel Time-Periodic Finite-Element Method for Steady-State Analysis of Rotating Machines
        Yasuhito Takahashi; Takeshi Iwashita; Hiroshi Nakashima; Tadashi Tokumasu; Masafumi Fujita; Shinji Wakao; Koji Fujiwara; Yoshiyuki Ishihara
        IEEE TRANSACTIONS ON MAGNETICS, Feb. 2012, Peer-reviewed
      • Algebraic Block Multi-Color Ordering Method for Parallel Multi-Threaded Sparse Triangular Solver in ICCG Method
        Takeshi Iwashita; Hiroshi Nakashima; Yasuhito Takahashi
        2012 IEEE 26TH INTERNATIONAL PARALLEL AND DISTRIBUTED PROCESSING SYMPOSIUM (IPDPS), 2012, Peer-reviewed
      • Micromagnetic Simulations of Perpendicular Recording Head Using the Parallel Fast Multipole Method Specialized for Uniform Brick Elements
        Yasuhito Takahashi; Takeshi Iwashita; Hiroshi Nakashima; Shinji Wakao; Koji Fujiwara; Yoshiyuki Ishihara
        IEEE TRANSACTIONS ON MAGNETICS, Oct. 2011, Peer-reviewed
      • Convergence Acceleration in Steady State Analysis of Synchronous Machines Using Time-Periodic Explicit Error Correction Method
        Yasuhito Takahashi; Hiroyuki Kaimori; Akihisa Kameari; Tadashi Tokumasu; Masafumi Fujita; Shinji Wakao; Takeshi Iwashita; Koji Fujiwara; Yoshiyuki Ishihara
        IEEE TRANSACTIONS ON MAGNETICS, May 2011, Peer-reviewed
      • Folded IC Preconditioning in Quasi-Static Field Analysis Taking Account of Both Tree-Cotree and phi=0 Gauge Conditions
        Yasuhito Takahashi; Takeshi Mifune; Takeshi Iwashita; Koji Fujiwara; Yoshiyuki Ishihara
        IEEE TRANSACTIONS ON MAGNETICS, May 2011, Peer-reviewed
      • Cache-aware Performance Improvement of Three-Dimensional FDTD Kernel
        南 武志; 高橋 康人; 岩下 武史
        情報処理学会論文誌:コンピューティングシステム, Mar. 2011, Peer-reviewed
      • Fast Computation of Quasi-Dynamic Earthquake Cycle Simulation with Hierarchical Matrices
        M. Ohtani; K. Hirahara; Y. Takahashi; T. Hori; M. Hyodo; H. Nakashima; T. Iwashita
        PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMPUTATIONAL SCIENCE (ICCS), 2011, Peer-reviewed
      • マルチコアプロセッサシステムによる高速有限要素電磁界解析
        美舩健; 廣谷迪; 岩下武史; 村山敏夫; 大谷秀樹
        情報処理学会論文誌トランザクション(CD-ROM), 15 Oct. 2010, Peer-reviewed
      • A Fast Finite Element Electromagnetic Analysis on Multi-core Processer System
        Takeshi Mifune; Yu Hirotani; Takeshi Iwashita; Toshio Murayama; Hideki Ohtani
        情報処理学会論文誌. コンピューティングシステム, Sep. 2010, Peer-reviewed
      • Large-Scale High-Frequency Electromagnetic Finite Element Analysis Using the Parallel Geometric Multigrid Method
        HIROTANI Yu; MIFUNE Takeshi; IWASHITA Takeshi; MURAYAMA Toshio; OHTANI Hideki
        The transactions of the Institute of Electronics, Information and Communication Engineers. B, Sep. 2010, Peer-reviewed
      • Convergence Acceleration of Time-Periodic Electromagnetic Field Analysis by the Singularity Decomposition-Explicit Error Correction Method
        Yasuhito Takahashi; Tadashi Tokumasu; Akihisa Kameari; Hiroyuki Kaimori; Masafumi Fujita; Takeshi Iwashita; Shinji Wakao
        IEEE TRANSACTIONS ON MAGNETICS, Aug. 2010, Peer-reviewed
      • New Preconditioning Technique to Avoid Convergence Deterioration Due to the Zero-Tree Gauge Condition in Magnetostatic Analysis
        Takeshi Mifune; Yasuhito Takahashi; Takeshi Iwashita
        IEEE TRANSACTIONS ON MAGNETICS, Jul. 2010, Peer-reviewed
      • 柔軟かつ直観的な記述が可能なジョブ並列スクリプト言語Xcrypt
        平石拓; 安部達也; 三宅洋平; 岩下武史; 中島浩
        先端的計算基盤システムシンポジウムSACSIS 2010, May 2010, Peer-reviewed
      • Large-scale Micromagnetic Simulation by Using Parallel Fast Multipole Method Specialized for Uniform Brick Elements
        Yasuhito Takahashi; Takeshi Iwashita; Hiroshi Nakashima; Shinji Wakao
        情報処理学会論文誌. コンピューティングシステム, 16 Mar. 2010
      • Iterative Method and Related Techniques in Finite Element Electromagnetic Field Analyses
        Iwashita Takeshi; Mifune Takeshi; Takahashi Yasuhito
        Bulletin of the Japan Society for Industrial and applied Mathematics, Mar. 2010, Peer-reviewed, Invited
      • 直方体要素用高速多重極法を用いた大規模マイクロマグネティックス計算の並列化
        髙橋康人; 岩下武史; 中島浩; 若尾真治
        情報処理学会論文誌 コンピューティングシステム, Mar. 2010, Peer-reviewed
      • Performance evaluation of parallel fast multipole accelerated boundary integral equation method in electrostatic field analysis
        Yasuhito Takahashi; Takeshi Iwashita; Hiroshi Nakashima; Shinji Wakao; Koji Fujiwara; Yoshiyuki Ishihara
        Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010, 2010, Peer-reviewed
      • Numerical analysis of Transient Stability Control of Diagonal Type MHD Generator Connected to Power Network(共著)
        I. Inoue; Y. Inui; T. Iwashita; M. Ishikawa
        Proc. 17th Int. Conf. on MHD Energy Conversion, 14 Sep. 2009
      • Improvement of Convergence Characteristic in Nonlinear Transient Eddy-Current Analyses using the Error Correction of Time Integration based on the Time-Periodic FEM and the EEC Method
        TAKAHASHI Yasuhito; TOKUMASU Tadashi; FUJITA Masafumi; WAKAO Shinji; IWASHITA Takeshi; KANAZAWA Masanori
        IEEJ Transactions on Power and Energy, Jun. 2009, Peer-reviewed
      • Folded Preconditioner: A New Class of Preconditioners for Krylov Subspace Methods to Solve Redundancy-Reduced Linear Systems of Equations
        Takeshi Mifune; Yasuhito Takahashi; Takeshi Iwashita
        IEEE TRANSACTIONS ON MAGNETICS, May 2009, Peer-reviewed
      • Micromagnetic simulation by using the fast multipole method specialized for uniform brick elements
        Y. Takahashi; S. Wakao; T. Iwashita; M. Kanazawa
        JOURNAL OF APPLIED PHYSICS, Apr. 2009, Peer-reviewed
      • Physical meaning of the advantage of A-phi method in convergence
        T. Iwashita; T. Mifune; S. Moriguchi; M. Shimasaki
        IEEE Transactions on Magnetics, Mar. 2009, Peer-reviewed
      • Convergence Acceleration of Iterative Solvers for the Finite Element Analysis Using the Implicit and Explicit Error Correction Methods
        Takeshi Mifune; Soichl Moriguchi; Takeshi Iwashita; Masaaki Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Mar. 2009, Peer-reviewed
      • Developing a Parallelized Matrix Solver of the Residual Cutting Method by using AMG as an Inner Solver
        松尾裕一; 岩下武史; 谷口幸二; 伊田明弘
        日本計算工学会論文集(Web), 2009, Peer-reviewed
      • Similarities between implicit correction multigrid method and A-phi formulation in electromagnetic field analysis
        Takeshi Iwashita; Takeshi Mifune; Masaaki Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Jun. 2008, Peer-reviewed
      • New evaluation index of incomplete cholesky preconditioning effect
        Takeshi Iwashita; Masaaki Shimasaki
        HIGH-PERFORMANCE COMPUTING, 2008, Peer-reviewed
      • A Parallel Multigrid Solver for High Frequency Electromagnetic Field Analyses with Small-scale PC Cluster
        YOSUI Kuniaki; IWASHITA Takeshi; MORI Michiya; KOBAYASHI Eiichi
        IEEJ Transactions on Power and Energy, Aug. 2007, Peer-reviewed
      • Parallel ICCG solvers for a finite-element eddy-current analysis on heterogeneous parallel computation environment
        T. Iwashita; M. Shimasaki; J. Lu
        APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL, Jul. 2007, Peer-reviewed
      • Evaluation index of acceleration factor and ordering in shifted ICCG method for electromagnetic field analyses
        Takeshi Iwashita; Takeshi Mifune; Masaaki Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Apr. 2007
      • A novel algebraic multigrid preconditioning for large-scale edge-element analyses
        T. Mifune; T. Iwashita; M. Shimasaki
        IEEE Transactions on Magnetics, Apr. 2007, Peer-reviewed
      • ダイアゴナル型MHD発電機の電力系統連系時における安定制御の研究(共著)
        井上 勲; 乾 義尚; 岩下武史; 石川本雄
        第2回新エネルギー技術シンポジウム, 09 Mar. 2007
      • Preconditioned Iterative Methods for High Frequency Edge Finite Element Electromagnetic Field Analyses
        MORI Michiya; YOSUI Kuniaki; IWASHITA Takeshi; KOBAYASHI Eiichi; ABE Shin
        The transactions of the Institute of Electronics, Information and Communication Engineers. C, 01 Aug. 2006
      • Algebraic multigrid preconditioning for 3-D magnetic finite-element analyses using nodal elements and edge elements
        T Mifune; S Isozaki; T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Apr. 2006
      • A Method to Support Cell Physiological Modelling Using Description Language and Ontology
        Shimayoshi Takao; Komurasaki Kazuhiro; Amano Akira; Iwashita Takeshi; Matsuda Tetsuya; Kanazawa Masanori
        IPSJ Digital Courier, 2006
      • Computer support for physiological cell modelling using an ontology on cell physiology
        Takao Shimayoshi; Kazuhiro Komurasaki; Akira Amano; Takeshi Iwashita; Masanori Kanazawa; Tetsuya Matsuda
        2006 28TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-15, 2006, Peer-reviewed
      • Hybrid image composition mechanism for enhancing volume graphics clusters
        J Nonaka; N Kukimoto; Y Ebara; M Ogata; T Iwashita; M Kanazawa; K Koyamada
        IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, Nov. 2005
      • Hybrid image composition mechanism for enhancing volume graphics clusters
        J Nonaka; N Kukimoto; Y Ebara; M Ogata; T Iwashita; M Kanazawa; K Koyamada
        IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, Nov. 2005, Peer-reviewed
      • A parallel algebraic multigrid solver for fast magnetic edge-element analyses
        T Mifune; T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, May 2005
      • Volume Rendering Acceleration by using Object Boundary Projection and Parallel Processing (共著)
        Journal of IIEEJ, 2005
      • A Parallel Algebraic Multigrid Preconditioner Using Algebraic Multicolor Ordering for Magnetic Finite Element Analyses.
        Takeshi Mifune; N. Obata; Takeshi Iwashita; Masaaki Shimasaki
        Parallel Computing: Current & Future Issues of High-End Computing, Proceedings of the International Conference ParCo 2005, 13-16 September 2005, Department of Computer Architecture, University of Malaga, Spain, 2005, Peer-reviewed
      • Comparison criteria for parallel orderings in ILU preconditioning
        T Iwashita; Y Nakanishi; M Shimasaki
        SIAM JOURNAL ON SCIENTIFIC COMPUTING, 2005, Peer-reviewed
      • Parallel ICCG solvers for a finite-element eddy-current analysis on heterogeneous parallel computation environment
        T Iwashita; M Shimasaki; JW Lu
        2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005, Peer-reviewed
      • “HybridImageCompositionMechanism forEnhancingVolumeGraphicsCluster
        Jorji Nonaka; Nobuyuki Kukimoto; Yasuo Ebara; Masato Ogata; Takeshi Iwashita; Masanori Kanazawa; Koji Koyamada
        IEICE Trans.Inf.& Syst.,Vol.E88-D,No.11,pp.2582-2590. 2005, 2005, Peer-reviewed
      • Parallelization of ICCG Method Using Three Dimensional Block Red-Black Ordering Method
        Takeshi Iwashita; Yuuichi Nakanishi; Masaaki Shimasaki
        IEEJ Transactions on Electronics, Information and Systems, 2004
      • Algebraic block red-black ordering method for parallelized ICCG solver with fast convergence and low communication costs
        T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, May 2003
      • New algebraic multigrid preconditioning for iterative solvers in electromagnetic finite edge-element analyses
        T Mifune; Iwashita, T; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, May 2003
      • Block red-black ordering: A new ordering strategy for parallelization of ICCG method
        T Iwashita; M Shimasaki
        INTERNATIONAL JOURNAL OF PARALLEL PROGRAMMING, Feb. 2003, Peer-reviewed
      • Parallel vector computing technique for discovering communities on the very large scale Web graph
        K Kawase; M Kawahara; T Iwashita; H Kawano; M Kawazawa
        DATA WAREHOUSING AND KNOWLEDGE DISCOVERY, PROCEEDINGS, 2003, Peer-reviewed
      • Fast linear equation solvers in high performance electromagnetic field analysis
        M Shimasaki; T Iwashita; T Mifune
        JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, Dec. 2002
      • A Fast AMG Solver for Linear Systems with A Real Symmetric H- Coefficient Matrix
        Mifune Takeshi; Iwashita Takeshi; Shimasaki Masaaki
        Transactions of the Japan Society for Industrial and Applied Mathematics, 15 Jun. 2002
      • A fast solver for FEM analyses using the parallelized algebraic multigrid method
        T Mifune; T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Mar. 2002
      • Algebraic multicolor ordering for parallelized ICCG solver in finite-element analyses
        Takeshi Iwashita; Masaaki Shimasaki
        IEEE Transactions on Magnetics, Mar. 2002
      • Block Red-Black Ordering for Parallelized ICCG Solver with Fewer Synchronization Points
        IWASHITA Takeshi; SHIMASAKI Masaaki
        Transactions of Information Processing Society of Japan, 2002
      • Parallel processing of ILU preconditioned BiCGSTAB solver using algebraic multi-color ordering method
        T Iwashita; T Tami; M Kanazawa
        PAR ELEC 2002: INTERNATIONAL CONFERENCE ON PARALLEL COMPUTING IN ELECTRICAL ENGINEERING, 2002, Peer-reviewed
      • Block red-black ordering method for parallel processing of iccg solver
        Takeshi Iwashita; Masaaki Shimasaki
        Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2002, Peer-reviewed
      • Construction and ordering of edge elements for parallel computation
        T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Sep. 2001
      • Fault analysis of the interconnecting system between a commercial-scale subsonic diagonal-type MHD generator and an ac power system
        T. Iwashita; T. Matsuo; Y. Inui; M. Ishikawa; J. Umoto
        Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi), Jul. 2001, Peer-reviewed
      • Parallel processing of 3-D Eddy current analysis with moving conductor using parallelized ICCG solver with renumbering process
        T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Jul. 2000
      • Fault Analysis of Interconnecting System between Commercial-Scale Subsonic Diagonal Type MHD Generator and AC Power System
        IWASHITA Takeshi; MATSUO Tetsuji; INUI Yoshitaka; ISHIKAWA Motoo; UMOTO Juro
        The Transactions of the Institute of Electrical Engineers of Japan. B A Publication of Power and Energy Society, 01 Mar. 2000
      • Three-dimensional finite brick-type edge-element Eddy current analysis using parallelized linear-system solvers
        T Iwashita; T Mifune; R Sokabe; M Shimasaki
        INTERNATIONAL CONFERENCE ON PARALLEL COMPUTING IN ELECTRICAL ENGINEERING - PARELEC 2000, PROCEEDINGS, 2000, Peer-reviewed
      • Stabilization analysis of commercial-scale subsonic diagonal-type MHD generator considering loading conditions
        T. Iwashita; T. Matsuo; Y. Inui; M. Ishikawa; J. Umoto
        Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi), 1999, Peer-reviewed
      • Stabilization Analysis of Commercial-Scale Subsonic Diagonal Type MHD Generator Considering Loading Conditions
        IWASHITA Takeshi; MATSUO Tetsuji; INUI Yoshitaka; ISHIKAWA Motoo; UMOTO Juro
        The Transactions of the Institute of Electrical Engineers of Japan. B A Publication of Power and Energy Society, Jun. 1998
      • Stabilization Analysis of Coal-Fired Subsonic Diagonal Type MHD Generators of Commercial Scale : Improvement of Stability of MHD Generators with Reduced Velocity
        IWASHITA Takeshi; MATSUO Tetsuji; ISHIKAWA Motoo; UMOTO Juro
        The Transactions of the Institute of Electrical Engineers of Japan. B A Publication of Power and Energy Society, 20 May 1997
      • Performance analysis of coal-fired MHD Faraday channel at IEE, China
        M Ishikawa; T Iwashita; J Tong
        ENERGY CONVERSION AND MANAGEMENT, Mar. 1997
      • Stabilization Analysis of Supersonic Diagonal Type MHD Generators of Commercial Scale
        IWASHITA Takeshi; MATSUO Tetsuji; ISHIKAWA Motoo; UMOTO Juro
        The Transactions of the Institute of Electrical Engineers of Japan. B A Publication of Power and Energy Society, 20 Jul. 1996
      • Stabilization Analysis of Supersonic Diagonal Type MHD Generators of Commercial Scale
        IWASHITA Takeshi; MATSUO Tetsuji; ISHIKAWA Motoo; UMOTO Juro
        The Transactions of the Institute of Electrical Engineers of Japan. B A Publication of Power and Energy Society, 1996

      Misc.

      • Comparison of Localized and Additive Schwarz Preconditioning in Parallel Finite-element Analysis of Electric Machines Using Domain Decomposition Method
        高橋康人; 貝森弘行; 藤原耕二; 岩下武史
        電気学会全国大会講演論文集(CD-ROM), 2023
      • Magnetic Field Analysis of Electric Machines Taking Account of Hysteretic Property Using Parallel-in-Space-and-Time Finite-Element Method
        高橋康人; 藤原耕二; 岩下武史
        電気学会研究会資料(Web), 2023
      • Instructions for Preparation of Manuscripts for The Proceedings of Computational Engineering Conference of JSCES
        中島研吾; 岩下武史; 八代尚; 下川辺隆史; 松葉浩也; 長尾大道; 荻田武史; 片桐孝洋
        計算工学講演会論文集(CD-ROM), 2020
      • Performance Evaluation of Large-scale Magnetic Field Analysis Using Parallel-in-space-and-time Finite-element Method based on Domain Decomposition and Parallel TP-EEC Method in Massively Parallel Computing Environment
        高橋康人; 藤原耕二; 岩下武史
        電気学会研究会資料, 2021
      • 「計算・データ・学習」融合スーパーコンピュータシステム「Wisteria/BDEC-01」の概要
        中島研吾; 塙敏博; 下川辺隆史; 伊田明弘; 芝隼人; 三木洋平; 星野哲也; 有間英志; 河合直聡; 坂本龍一; 近藤正章; 岩下武史; 八代尚; 長尾大道; 松葉浩也; 荻田武史; 片桐孝洋; 古村孝志; 鶴岡弘; 市村強; 藤田航平
        情報処理学会研究報告(Web), 2021
      • Numerical Linear Algebra Based on Lattice H-Matrices
        Akihiro Ida; Ichitaro Yamazaki; Rio Yokota; Satoshi Ohshima; Tasuku Hiraishi; Takeshi Iwashita; Tetsuya Hoshino; Toshihiro Hanawa
        HPC Asia 2020, Jan. 2020
      • Large-scale Magnetic Field Analysis of Electric Machines Using Parallel Finite-element Method Based on Domain Decomposition and Parareal
        髙橋 康人; 藤原 耕二; 徳増 正; 岩下 武史; 中島 浩
        電気学会研究会資料. SA, 21 Aug. 2018
      • Large-scale Magnetic Field Analysis of Electric Machines Using Parallel Finite-element Method Based on Domain Decomposition and Parareal
        髙橋 康人; 藤原 耕二; 徳増 正; 岩下 武史; 中島 浩
        電気学会研究会資料. RM, 21 Aug. 2018
      • Investigation of SMP Parallel Performance in Finite Element Electromagnetic Field Analyses
        浅沼 達也; 仙波 和樹; 山田 隆; 岩下 武史
        計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science, Jun. 2018
      • Knights LandingにおけるTilied3D FDTDカーネルの性能評価
        深谷猛; 岩下武史
        情報処理学会研究報告(Web), 30 Apr. 2018
      • Large-scale Magnetic Field Analysis of Electric Machines Using Parallel Finite-element Method Based on Space-time Domain Decomposition Method
        髙橋 康人; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. RM, 24 Jan. 2018
      • Large-scale Magnetic Field Analysis of Electric Machines Using Parallel Finite-element Method Based on Space-time Domain Decomposition Method
        髙橋 康人; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. SA, 24 Jan. 2018
      • Magnetic Field Analysis of Cage Induction Motor Using Parallel TP-EEC Method Considering Polyphase Time-periodic Condition
        髙橋 康人; 藤原 耕二; 徳増 正; 岩下 武史; 中島 浩
        電気学会研究会資料. SA, 22 Sep. 2017
      • Magnetic Field Analysis of Cage Induction Motor Using Parallel TP-EEC Method Considering Polyphase Time-periodic Condition
        髙橋 康人; 藤原 耕二; 徳増 正; 岩下 武史; 中島 浩
        電気学会研究会資料. RM, 22 Sep. 2017
      • Application of the error correction method to nonlinear problem
        仙波 和樹; 山田 隆; 岩下 武史; 美舩 健
        電気学会研究会資料. SA, 21 Sep. 2017
      • Application of the error correction method to nonlinear problem
        仙波 和樹; 山田 隆; 岩下 武史; 美舩 健
        電気学会研究会資料. RM, 21 Sep. 2017
      • タイルレベルの並列処理を可能とする時空間タイリング手法を用いた3次元FDTDカーネルの実装と性能評価
        深谷猛; 岩下武史
        情報処理学会研究報告(Web), 19 Jul. 2017
      • Acceleration of sparse matrix vector multiplication by exploiting stencil structure
        深谷 猛; 三浦 瑛絵; 岩下 武史
        計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science, May 2017
      • Time domain parallel finite-element method coupling with motion for transient motor starting analysis
        Yasuhito Takahashi; Junji Kitao; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        IEEJ Transactions on Power and Energy, 2017
      • Iterative Stencil Computation with Temporal and Spatial Tiling Method and Its Applications
        Fukaya Takeshi; Iwashita Takeshi
        The Proceedings of The Computational Mechanics Conference, 2017
      • Fast 3D transient eddy current analysis by using the error correction method based on the information with respect to the past solution process
        河口 慈; 美舩 健; 松尾 哲司; 岩下 武史
        電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 07 Sep. 2016
      • Time Domain Parallel Finite-element Method Coupling with Motion for Transient Motor Starting Analysis
        髙橋 康人; 北尾 純士; 藤原 耕二; 岩下 武史; 中島 浩
        電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 07 Sep. 2016
      • Fast 3D transient eddy current analysis by using the error correction method based on the information with respect to the past solution process
        河口 慈; 美舩 健; 松尾 哲司; 岩下 武史
        電気学会研究会資料. SA, 07 Sep. 2016
      • Time Domain Parallel Finite-element Method Coupling with Motion for Transient Motor Starting Analysis
        髙橋 康人; 北尾 純士; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. SA, 07 Sep. 2016
      • Fast 3D transient eddy current analysis by using the error correction method based on the information with respect to the past solution process
        河口 慈; 美舩 健; 松尾 哲司; 岩下 武史
        電気学会研究会資料. RM, 07 Sep. 2016
      • Time Domain Parallel Finite-element Method Coupling with Motion for Transient Motor Starting Analysis
        髙橋 康人; 北尾 純士; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. RM, 07 Sep. 2016
      • ポストムーア時代におけるFLOPSからBYTESへの変革
        松岡聡; 天野英晴; 中島研吾; 井上 弘士; 工藤 知宏; 丸山直也; 田浦健次朗; 岩下武史; 片桐孝洋; 塙敏博; 遠藤敏夫
        情報処理学会研究報告HPC-155-2016, 10 Aug. 2016
      • Computational amount estimation and load balancing when constructing hierarchical matrices
        伊田 明弘; 平石 拓; 岩下 武史
        計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science, May 2016
      • Fast 2D eddy current analysis by using the error correction method based on the information with respect to the past solution process
        河口 慈; 美舩 健; 松尾 哲司; 岩下 武史
        電気学会研究会資料. SA, 21 Jan. 2016
      • Fast 2D eddy current analysis by using the error correction method based on the information with respect to the past solution process
        河口 慈; 美舩 健; 松尾 哲司; 岩下 武史
        電気学会研究会資料. RM, 21 Jan. 2016
      • Software Framework for Parallel BEM Analyses with H-matrices and Its Application
        岩下 武史; 伊田 明弘; 美舩 健; 髙橋 康人
        計算工学, 2016
      • マルチコア・メニーコア環境における反復型ステンシル計算と時空間タイリング
        深谷猛; 岩下武史
        日本応用数理学会年会講演予稿集(CD-ROM), 2016
      • XeonPhi上での乗法シュワルツ‐ブロック化多色順序付けGS法を適用したSA‐AMGの性能評価
        河合直聡; 伊田明弘; 岩下武史; 中島浩
        日本応用数理学会年会講演予稿集(CD-ROM), 2016
      • Investigation of Convergence Characteristics of ICCG Method Based on Algebraic Block Multi-color Reordering to Finite Element Electromagnetic Field Analyses
        仙波 和樹; たに 浩司; 山田 隆; 岩下 武史; 髙橋 康人; 中島 浩
        電気学会研究会資料. SA, 28 Sep. 2015
      • Investigation of Convergence Characteristics of ICCG Method Based on Algebraic Block Multi-color Reordering to Finite Element Electromagnetic Field Analyses
        仙波 和樹; たに 浩司; 山田 隆; 岩下 武史; 髙橋 康人; 中島 浩
        電気学会研究会資料. RM, 28 Sep. 2015
      • Not Too Late to Learn! Mathematics for Computer Science:2. Mathematics in Numerical Analyses - Topics on Linear Solvers -
        岩下 武史
        IPSJ Magazine, 15 Apr. 2015
      • Improvement of Hierarchical Matrices with Adaptive Cross Approximation for Large-scale Simulation
        Akihiro Ida; Takeshi Iwashita; Makiko Ohtani; Kazuro Hirahara
        情報処理学会論文誌コンピューティングシステム(ACS), 26 Mar. 2015
      • 動的負荷分散を用いた階層型行列生成の並列化
        棟形克己; 平石拓; 伊田明弘; 岩下武史; 中島浩
        情報処理学会全国大会講演論文集, 17 Mar. 2015
      • Parallel FEM Based on Domain Decomposition Method in Magnetic Field Analyses of Rotating Machines Using Nonconforming Mesh Connection Technique
        髙橋 康人; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. SA, 06 Mar. 2015
      • Parallel FEM Based on Domain Decomposition Method in Magnetic Field Analyses of Rotating Machines Using Nonconforming Mesh Connection Technique
        髙橋 康人; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. RM, 06 Mar. 2015
      • Parallel Hierarchical Matrix Arithmetics using Dynamic Load Balancing
        棟形 克己; 平石 拓; 伊田 明弘; 岩下 武史; 中島 浩
        IPSJ SIG Notes, 23 Feb. 2015
      • 過去の求解プロセス情報を活用した誤差修正用写像行列の構築
        岩下武史; 河口 慈; 美舩 健; 松尾哲司
        応用数理学会 2015年度年会, 2015
      • Parallelization of TP-EEC Method Based on Phase Conversion and Polyphase Time Periodic Condition
        髙橋 康人; 徳増 正; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. SA, 26 Sep. 2014
      • Parallelization of TP-EEC Method Based on Phase Conversion and Polyphase Time Periodic Condition
        髙橋 康人; 徳増 正; 藤原 耕二; 岩下 武史; 中島 浩
        電気学会研究会資料. RM, 26 Sep. 2014
      • Application of Implicit Error Correction Method in T-Omega Finite Element Analysis Using Un-Structured Mesh Including Fake Conductors
        戸水 真哉; 美舩 健; 松尾 哲司; 岩下 武史
        電気学会研究会資料. SA, 25 Sep. 2014
      • Application of Implicit Error Correction Method in T-Omega Finite Element Analysis Using Un-Structured Mesh Including Fake Conductors
        戸水 真哉; 美舩 健; 松尾 哲司; 岩下 武史
        電気学会研究会資料. RM, 25 Sep. 2014
      • Parallel Hierarchical Matrices with Adaptive Cross Approximation on Symmetric Multiprocessing Clusters
        Akihiro Ida; Takeshi Iwashita; Takeshi Mifune; Yasuhito Takahashi
        情報処理学会論文誌, 15 Sep. 2014
      • 大規模境界要素解析に向けた並列化階層型行列法ライブラリの開発
        伊田明弘; 岩下武史; 美舩健; 高橋康人
        計算工学講演会論文集(CD-ROM), 11 Jun. 2014
      • Parallel H-Matrices with Adaptive Cross Approximation for Large-Scale Simulation
        Akihiro Ida; Takeshi Iwashita
        16th SIAM Conference on Parallel Processing for Scientific Computing, 20 Feb. 2014
      • 超大規模境界要素解析に向けた階層型行列法の改良と並列化手法
        伊田 明弘; 岩下 武史
        17回環瀬戸内応用数理学会, 12 Jan. 2014
      • Performance Evaluation of Time Domain Parallelized FEMs in Time-Periodic Nonlinear Magnetic Field Analyses of Electrical Machiens
        Takahashi Yasuito; Tokumasu Tadashi; Fujiwara Koji; Iwashita Takeshi; Nakashima Hiroshi
        The Proceedings of The Computational Mechanics Conference, 2014
      • Analysis of induced electric field in human body by ELF magnetic field using parallel FMM accelerated BEM
        Y. Takahashi; A. Ahagon; K. Fujiwara; T. Iwashita; H. Nakashima
        IET Conference Publications, 2014
      • Performance Evaluation of Computer Systems Consisted of Various Architectures with Scientific Application
        野瀬田裕樹; 河合直聡; 伊田明弘; 岩下武史; 中島浩; 美舩健; 高橋康人; 荻野 正雄; 岩下 武史; 東田 学
        研究報告ハイパフォーマンスコンピューティング(HPC), 09 Dec. 2013
      • Performance Evaluation of Computer Systems Consisted of Various Architectures with Scientific Application
        深沢 圭一郎; 片桐 孝洋; 大宮 学; 江川 隆輔; 大島 聡史; 青木 尊之; 下川辺 隆史; 荻野 正雄; 岩下 武史; 東田 学
        研究報告計算機アーキテクチャ(ARC), 09 Dec. 2013
      • Application of Multithreaded ICCG Solver Based on Algebraic Block Multi-color Ordering to Finite Element Electromagnetic Field Analyses
        仙波 和樹; たに 浩司; 山田 隆; 岩下 武史; 髙橋 康人; 中島 浩
        電気学会研究会資料. RM, 27 Sep. 2013
      • An Application of Geometric Block Diagonal Preconditioning for Nonconforming Voxel Finite Element Analysis
        SHIMIZU Kohei; MIFUNE Takeshi; IWASHITA Takeshi; MATSUO Tetsuji
        電気学会研究会資料. SA, 静止器研究会, 26 Sep. 2013
      • Application of Multithreaded ICCG Solver Based on Algebraic Block Multi-color Ordering to Finite Element Electromagnetic Field Analyses
        SEMBA kAZUKI; TANI Koji; YAMADA Takashi; IWASHITA Takeshi; TAKAHASHI Yasuhito; NAKASHIMA Hiroshi
        電気学会研究会資料. SA, 静止器研究会, 26 Sep. 2013
      • IC前処理におけるSIMD演算活用のためのブロック化手法
        武村直和; 岩下武史; 伊田明弘; 中島浩
        日本応用数理学会2013年度年会, Sep. 2013
      • Software framework for BEM analyses with fast matrix computation
        伊田 明弘; 岩下 武史; 美舩 健
        計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science, Jun. 2013
      • 最新プロセッサのSIMD演算を活用する並列化ガウス=ザイデルスムーザの実装方法
        河合直聡; 岩下武史; 中島浩
        先進的計算基盤システムシンポジウム論文集, 15 May 2013
      • 並列計算機上での境界要素解析を支援するソフトウェアフレームワークの開発
        野瀬田裕樹; 野瀬田裕樹; 河合直聡; 伊田明弘; 岩下武史; 中島浩; 美舩健; 高橋康人
        情報処理学会研究報告(CD-ROM), 15 Apr. 2013
      • 並列計算機上での境界要素解析を支援するソフトウェアフレームワークの開発
        野瀬田裕樹; 河合直聡; 伊田明弘; 岩下武史; 中島浩; 美舩健; 高橋康人
        情報処理学会研究報告. [ハイパフォーマンスコンピューティング], 14 Feb. 2013
      • Performance Evaluation of Multithreaded Iterative Solver on Recent Processors
        Takeshi Iwashita; Akihiro Ida; Masatoshi Kawai; Hiroshi Nakashima
        SIAM Conf. Computational Science and Engineering, Feb. 2013
      • Temporal and Spatial Tiling Method without Redundant Calculations for Three-dimensional FDTD Method
        南 武志; 岩下 武史; 中島 浩
        情報処理学会論文誌コンピューティングシステム(ACS), 31 Jan. 2013
      • Improvement of Convergence Characteristic in T-Omega Finite Element Analysis Including Conductors with Holes
        MIFUNE Takeshi; KAMIHATA Satoshi; IWASHITA Takeshi; MATSUO Tetsuji
        電気学会研究会資料. RM, 回転機研究会, 10 Sep. 2012
      • Investigation on Practical Implementation of ICCG Method and Proposal of Benchmarking Procedure to Evaluate Its Computation Speed
        OKAMOTO Yoshifumi; TAKAHASHI Yasuhito; FUJIWARA Koji; AHAGON Akira; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. RM, 回転機研究会, 10 Sep. 2012
      • 並列境界要素解析フレームワークの設計と実装
        野瀬田裕樹; 河合直聡; 岩下武史; 高橋康人; 美舩健; 中島浩
        先進的計算基盤システムシンポジウム論文集, 09 May 2012
      • Design of Authentication System for High Performance Distributed Computing Environment
        合田 憲人; 東田 学; 坂根 栄作; 天野 浩文; 小林 克志; 棟朝 雅晴; 江川 隆輔; 建部 修見; 鴨志田 良和; 滝澤 真一朗; 永井 亨; 岩下 武史; 石川 裕
        先進的計算基盤システムシンポジウム論文集, 09 May 2012
      • Basic Design and Implementation Method of Framework Software for Boundary Element Analyses
        Takeshi Iwashita; Akihiro Ida
        1st Joint CREST Workshop Toudai and RIKEN, May 2012
      • Time-Domain Parallel Finite-Element Method for Fast Magnetic Field Analysis of Induction Motors
        TAKAHASHI Yasuhito; TOKUMASU Tadashi; FUJITA Masafumi; IWASHITA Takeshi; WAKAO Shinji; FUJIWARA Koji; ISHIHARA Yoshiyuki
        電気学会研究会資料. RM, 回転機研究会, 26 Jan. 2012
      • Parallel Multigrid Poisson Solver Based on Block Red-Black Ordering
        河合 直聡; 岩下 武史; 中島 浩
        ハイパフォーマンスコンピューティングと計算科学シンポジウム論文集, 17 Jan. 2012
      • マルチフィジックスおよび最適化に向けたハイパフォーマンス計算力学
        樫山 和夫; 牛島 省; 寺田 賢二郎; 岡澤 重信; 木村 一郎; 中畑 和之; 浅井 光輝; 松本 純一; 岩下 武史; 小山田 耕二
        学際大規模情報基盤共同利用・共同研究拠点 平成23年度研究 最終報告書, 11-NA04, 2012
      • A Basic Study on the Use of Algebraic Multigrid Method for Magnetic Edge-Element Analysis with A-Method
        MIFUNE Takeshi; NAMBA Ryosuke; IWASHITA Takeshi; MATSUO Tetsuji
        電気学会研究会資料. SA, 静止器研究会, 25 Aug. 2011
      • Automatic Determination of Acceleration Factor Based on Residual and Functional in Shifted ICCG Method
        KITAO Junji; TAKAHASHI Yasuhito; FUJIWARA Koji; ISHIHARA Yoshiyuki; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. SA, 静止器研究会, 25 Aug. 2011
      • A Basic Study on the Use of Algebraic Multigrid Method for Magnetic Edge-Element Analysis with A-Method
        MIFUNE Takeshi; NAMBA Ryosuke; IWASHITA Takeshi; MATSUO Tetsuji
        電気学会研究会資料. RM, 回転機研究会, 25 Aug. 2011
      • Automatic Determination of Acceleration Factor Based on Residual and Functional in Shifted ICCG Method
        KITAO Junji; TAKAHASHI Yasuhito; FUJIWARA Koji; ISHIHARA Yoshiyuki; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. RM, 回転機研究会, 25 Aug. 2011
      • ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications with Automatic Tuning
        中島 研吾; 佐藤 正樹; 古村 孝志; 奥田 洋司; 岩下 武史; 阪口 秀
        研究報告ハイパフォーマンスコンピューティング(HPC), 20 Jul. 2011
      • Job-level Parallel Executions for Satisfying Distributed Constraints
        安部 達也; 平石 拓; 三宅 洋平; 岩下 武史; 中島 浩
        研究報告ハイパフォーマンスコンピューティング(HPC), 20 Jul. 2011
      • Cache-Aware Implementation for Performance Improvement of Three-Dimensional FDTD Kernel and its Performance Evaluation
        南 武志; 岩下 武史; 中島 浩
        研究報告ハイパフォーマンスコンピューティング(HPC), 20 Jul. 2011
      • ブロック化赤-黒順序付け法による並列マルチグリッドポアソンソルバの開発とその性能評価
        河合直聡; 岩下武史; 中島浩; 三宅洋平
        先進的計算基盤システムシンポジウム論文集, 18 May 2011
      • A Use of Classical Algebraic Multigrid Method in Finite Edge-Element Analysis
        Ryosuke Namba; Takeshi Mifune; Takeshi Iwashita; Tetsuji Matsuo
        Proc. 20thMAGDA Conf. in Pacifi c Asia (MAGDA2011), pp. 260–264, 2011-11., 2011, Peer-reviewed
      • A Block Diagonal Preconditioning Technique for Finite Edge-Element Formulation Using a Voxel Mesh,
        Takeshi Mifune; Ryosuke Namba; Takeshi Iwashita; Tetsuji Matsuo
        Proc. 15th Biennial IEEE Conf. Electromagnetic Fields Computation (CEFC2012), p.325, 2012-11., 2011, Peer-reviewed
      • An Implicit Error Correction Method for the T- Ω Formulation Including Fake Conductors
        Takeshi Mifune; S. Kamihata; Takeshi Iwashita; Tetsuji Matsuo
        Proc. 15th Biennial IEEE Conf. Electromagnetic Fields Computation (CEFC2012), p.241, 2012-11., 2011, Peer-reviewed
      • 辺要素有限要素法を用いた磁界解析における自動加速機能付ICCG 法の有効性に関する検討
        北尾純士; 高橋康人; 藤原耕二; 石原好之; 美舩健; 岩下武史
        平成23 年電気学会全国大会,5-196, 2011-3., 2011, Peer-reviewed
      • 係数行列の対角ブロックを使用する前処理による直方体辺要素静磁界解析の高速化
        難波亮介; 美舩健; 岩下武史
        平成23 年電気学会全国大会,5-192, 2011-3., 2011, Peer-reviewed
      • 辺要素有限要素法を用いた磁界解析に対する 自動加速機能付ICCG 法の有効性検証
        北尾純士; 高橋康人; 藤原耕二; 美舩健; 岩下武史; 石原好之
        第14 回環瀬戸内応用数理研究部会シンポジウム講演予稿集,pp.213– 218, 2011-1., 2011, Peer-reviewed
      • A Fast Finite Element Electromagnetic Analysis on Multi-core Processer System
        美舩 健; 廣谷 迪; 岩下 武史; 村山 敏夫; 大谷 秀樹
        情報処理学会論文誌コンピューティングシステム(ACS), 17 Sep. 2010
      • An Efficient Vector Transfer for Sparse Matrix-Vector Multiplication on Distributed Memory Systems (ハイパフォーマンスコンピューティング(HPC) Vol.2010-HPC-124)
        NAKASHIMA HIROSHI; FUKUHARA TOSHIYUKI; IWASHITA TAKESHI
        情報処理学会研究報告, Apr. 2010
      • Large-scale Micromagnetic Simulation by Using Parallel Fast Multipole Method Specialized for Uniform Brick Elements
        高橋 康人; 岩下 武史; 中島 浩; 若尾 真治
        情報処理学会論文誌コンピューティングシステム(ACS), 16 Mar. 2010
      • Cache-Aware Performance Improvement of FDTD Kernel
        MINAMI TAKESHI; IWASHITA TAKESHI; TAKAHASHI YASUHITO; NAKASHIMA HIROSHI
        研究報告ハイパフォーマンスコンピューティング(HPC), 15 Feb. 2010
      • An Efficient Vector Transfer for Sparse Matrix-Vector Multiplication on Distributed Memory Systems
        NAKASHIMA HIROSHI; FUKUHARA TOSHIYUKI; IWASHITA TAKESHI
        研究報告ハイパフォーマンスコンピューティング(HPC), 15 Feb. 2010
      • A Study of Demagnetizing Field in Micromagneic Simulation under Periodic Boundary Condition
        MATSUO Tetsuji; YAMAZAKI Yuya; IWASHITA Takeshi
        電気学会研究会資料. MAG, マグネティックス研究会, 28 Jan. 2010
      • A Solution for Convergence Deterioration Caused by the Tree-Cotree Gauging in Magnetic Edge-Element Analysis
        MIFUNE Takeshi; TAKAHASHI Yasuhito; IWASHITA Takeshi
        電気学会研究会資料. SA, 静止器研究会, 28 Jan. 2010
      • Additive Schwarz Type Folded IC Preconditioning in Magnetostatic and Quasi-Static Field Analyses Using Edge-Based Finite-Element Method
        TAKAHASHI Yasuhito; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. SA, 静止器研究会, 28 Jan. 2010
      • A Parallel Finite Element Analysis Using the Geometric Multigrid Method for Large-Scale High-Frequency Electromagnetic Problem
        HIROTANI Yu; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. SA, 静止器研究会, 28 Jan. 2010
      • A Solution for Convergence Deterioration Caused by the Tree-Cotree Gauging in Magnetic Edge-Element Analysis
        MIFUNE Takeshi; TAKAHASHI Yasuhito; IWASHITA Takeshi
        電気学会研究会資料. RM, 回転機研究会, 28 Jan. 2010
      • Additive Schwarz Type Folded IC Preconditioning in Magnetostatic and Quasi-Static Field Analyses Using Edge-Based Finite-Element Method
        TAKAHASHI Yasuhito; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. RM, 回転機研究会, 28 Jan. 2010
      • A Parallel Finite Element Analysis Using the Geometric Multigrid Method for Large-Scale High-Frequency Electromagnetic Problem
        HIROTANI Yu; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. RM, 回転機研究会, 28 Jan. 2010
      • A Study of Demagnetizing Field in Micromagneic Simulation under Periodic Boundary Condition
        MATSUO Tetsuji; YAMAZAKI Yuya; IWASHITA Takeshi
        電気学会研究会資料. RM, 回転機研究会, 28 Jan. 2010
      • A Solution for Convergence Deterioration Caused by the Tree-Cotree Gauging in Magnetic Edge-Element Analysis
        MIFUNE Takeshi; TAKAHASHI Yasuhito; IWASHITA Takeshi
        電気学会研究会資料. MAG, マグネティックス研究会, 28 Jan. 2010
      • Additive Schwarz Type Folded IC Preconditioning in Magnetostatic and Quasi-Static Field Analyses Using Edge-Based Finite-Element Method
        TAKAHASHI Yasuhito; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. MAG, マグネティックス研究会, 28 Jan. 2010
      • A Parallel Finite Element Analysis Using the Geometric Multigrid Method for Large-Scale High-Frequency Electromagnetic Problem
        HIROTANI Yu; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. MAG, マグネティックス研究会, 28 Jan. 2010
      • Demagnetizing field in micromagnetic simulation under periodic boundary condition
        Tetsuji Matsuo; Yuya Yamazaki
        Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010, 2010
      • Convergence acceleration in transient analysis of rotating machines using time-periodic explicit error correction method
        Yasuhito Takahashi; Hiroyuki Kaimori; Akihisa Kameari; Tadashi Tokumasu; Masafumi Fujita; Shinji Wakao; Takeshi Iwashita; Koji Fujiwara; Yoshiyuki Ishihara
        Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010, 2010
      • Perfmance Evaluation of Additive Schwarz Type Folded IC \nPreconditioner in Electromagnetic Field Computation Using Edge-Based FEM
        Yasuhito Takahashi; Takeshi Mifune; Takeshi Iwashita
        Kyoto-Forum on Krylov Subspace method, pp. 16 21,2010-3., 2010, Peer-reviewed
      • 静磁場解析における折畳み前処理の並列化に関する検討
        佐藤翔士; 美舩健; 高橋康人; 岩下武史
        平成22年電気関係学会関西支部連合大会,4A203-15, p. 497, 2010-11., 2010, Peer-reviewed
      • 静磁界辺要素解析における折畳み前処理のOpenMP による並列化
        佐藤翔士; 美舩健; 高橋康人; 岩下武史
        第19 回MAGDA コンファレンス,OS4-TA3,pp.135–138, 2010-11., 2010, Peer-reviewed
      • AC-AT block IC 前処理による辺要素静磁界解析の高速化に関する検討
        難波亮介; 美舩健; 高橋康人; 岩下武史
        平成22年電気学会全国大会, no. 5, p. 185, 2010-3., 2010, Peer-reviewed
      • 折畳み前処理を用いた静磁場解析におけるRCM 法に関する基礎的検討
        佐藤翔土; 美舩健; 高橋康人; 岩下武史
        平成22 年電気学会全国大会, no. 5, p. 184, 2010-3., 2010, Peer-reviewed
      • 地震発生サイクルシミュレーション コードの高速化:(2) Hierarchical Matrices 法の適用
        平原和朗; 大谷真紀子; 高橋康人; 堀高峰; 兵藤守; 中島浩; 岩下武史
        日本地震学会秋季大会,2010-10., 2010, Peer-reviewed
      • Analysis of Hybrid-type Parallel ICCG Method Based on Localized IC Factorization and Multi-color Ordering
        Toshiyuki Fukuhara; Yasuhito Takahashi; Takeshi Iwashita; Hiroshi Nakashima
        IPSJ SIG Notes, 02 Oct. 2009
      • Electromagnetic Field Analysis of Rotating Machines with Parallel Time-Periodic Finite-Element Method
        TAKAHASHI Yasuhito; IWASHITA Takeshi; TOKUMASU Tadashi; FUJITA Masafumi; WAKAO Shinji
        電気学会研究会資料. SA, 静止器研究会, 17 Sep. 2009
      • Performance Evaluation of Parallel ICCG Solver based on Algebraic Block Multi-color Ordering Method
        Takeshi Iwashita; Yasuhito Takahashi; Hiroshi Nakashima
        IPSJ SIG Notes, 28 Jul. 2009
      • 6. Numerical Libraries with Auto-tuning Facility(Software Automatic Tuning Technologies for Scientific and Technical Computing)
        KURODA Hisayasu; NAONO Ken; IWASHITA Takeshi
        IPSJ Magazine, 15 Jun. 2009
      • Basic concept of explicit and implicit error correction methods (Numerical Analysis : Theory, Methods and Applications)
        Iwashita Takeshi; Mifune Takeshi; Shimasaki Masaaki
        RIMS Kokyuroku, Apr. 2009
      • Basic concept of explicit and implicit error correction methods (Numerical Analysis : Theory, Methods and Applications)
        Iwashita Takeshi; Mifune Takeshi; Shimasaki Masaaki
        RIMS Kokyuroku, Apr. 2009
      • Towards seamless and highly-productive parallel script language
        平石 拓; 岩下 武史; 中島 浩
        情報処理学会研究報告, 26 Feb. 2009
      • Towards Seamless and Highly-Productive Parallel Script Language
        HIRAISHI TASUKU; IWASHITA TAKESHI; NAKASHIMA HIROSHI
        IPSJ SIG Notes, 19 Feb. 2009
      • Towards Seamless and Highly-Productive Parallel Script Language
        HIRAISHI TASUKU; IWASHITA TAKESHI; NAKASHIMA HIROSHI
        IPSJ SIG Notes, 19 Feb. 2009
      • Large-Scale Micromagnetic Simulation by Using Specialized Fast Multipole Method for Uniform Brick Elements
        TAKAHASHI Yasuhito; IWASHITA Takeshi; KANAZAWA Masanori; WAKAO Shinji
        電気学会研究会資料. SA, 静止器研究会, 29 Jan. 2009
      • A Solution for the Convergence Deterioration Caused by Elimination of Redundant Unknowns φ in the A-φ method : New Preconditioning Equivalent to the Use of Redundant Unknowns : Folded Preconditioning
        MIFUNE Takeshi; TAKAHASHI Yasuhito; IWASHITA Takeshi
        電気学会研究会資料. SA, 静止器研究会, 29 Jan. 2009
      • Relationship between Folded Preconditioning and Coarse-Grid-Correctio
        Takeshi Mifune; Takeshi Iwashita; Yasuhito Takahas
        15 th Intl. Conf. Finite Elements in Flow Problems (F EpF.0 91)2,1, 2009-, 2009, Peer-reviewed
      • A New Preconditioning Technique for Linear Equations \nDerived from the Elimination of Redundant Unknowns in Singular Systems
        Takeshi Mifune; Yasuhito Takahashi; Takeshi Iwashita
        Applications, pp. 20-22, 2009, 2009, Peer-reviewed
      • Preconditioning in Finite Element Analysis of Electro magnetic Field: A- φBlock IC Preconditioning
        Yasuhito Takahashi; Takeshi Mifune; Takeshi Iwashita
        Proc. 0f the 17th Intl. Conf. on the Computation of Electromagnetic Fields (COMPUMAG2009), pp. 1026 1027, 2009-11, 2009, Peer-reviewed
      • 幾何マルチグリッド法を用いた有限要素電磁波解析の並列化に関する検討
        廣谷迪; 美舩健; 岩下武史
        平成 21 年電気関係学会関西支部連合大会, G7-7, 2009-11., 2009, Peer-reviewed
      • 特異な線形方程式の正則化に伴う悪条件化を解消する新しい前処理
        美舩健; 高橋康人; 岩下武史
        加速法ワー クショップ, T1-T4, 2009-11., 2009, Peer-reviewed
      • 高周波電磁界解析に対する複素シフトを用いた幾何マルチグリッド前処理についての検討
        廣谷迪; 美船健; 岩下武史
        平成21年電気学会全国大会,5-154, 2009-3., 2009, Peer-reviewed
      • 辺要素有限要素法を用いた静磁界解析における代数マルチグリッド法の応用に関する検討
        石田智之; 美船健; 岩下武史
        平成21年電気学会全国大会,5-152, 2009-3., 2009, Peer-reviewed
      • Performance Evaluation of IDR (s) Method for Various Nonsymmetric Matrices in Electromagnetic Field Computations
        Takahashi Yasuhito; Iwashita Takeshi; Kanazawa Masanori; Wakao Shinji
        Information Processing Society of Japan, 24 Nov. 2008
      • A Study on Stability Control of Commercial scale Diagonal type MHD Generator Connected with Power Transmission Network
        INOUE Isao; INUI Yoshitaka; IWASHITA Takeshi; ISHIKAWA Motoo
        電気学会研究会資料. FTE, 新エネルギー・環境研究会, 29 Sep. 2008
      • Novel Preconditioning Based on the IC Factorization and the EEC Method for Edge Finite Element Electromagnetic Field Analyses
        TAKAHASHI Yasuhito; MIFUNE Takeshi; IWASHITA Takeshi; KANAZAWA Masanori
        電気学会研究会資料. SA, 静止器研究会, 18 Sep. 2008
      • Improvement of Convergence Characteristic of Time Integration Methods in Nonlinear Transient Eddy-Current Analyses by Using the Time-Periodic FEM and the EEC method
        TAKAHASHI Yasuhito; TOKUMASU Tadashi; WAKAO Shinji; IWASHITA Takeshi; KANAZAWA Masanori
        電気学会研究会資料. SA, 静止器研究会, 18 Sep. 2008
      • Recent Trend of Linear Iterative Solver in Electromagnetic Field Computations(Parallelization Techniques of Electromagnetic Fields Analysis Programs)
        Iwashita Takeshi; Takahashi Yasuhito
        Journal of the Japan Society for Simulation Technology, 15 Sep. 2008
      • Excitement propagation simulation by Kyoto model on parallel computer
        SONG Inhwan; TAKAHASHI Yasuhito; IWASHITA Takeshi; KANAZAWA Masanori; SHIMAYOSHI Takao; AMANO Akira; MATSUDA Tetsuya
        情報処理学会研究報告システム評価(EVA), 06 Aug. 2008
      • Similarities between implicit correction multigrid method and A-phi formulation in electromagnetic field analysis
        Takeshi Iwashita; Takeshi Mifune; Masaaki Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Jun. 2008
      • A Basic Study on Parallelization of Large-Scale High Frequency Electromagnetic Analysis Using Multigrid Method
        MIFUNE Takeshi; IWASHITA Takeshi; MURAYAMA Toshio; KANEKO Yoshihiro; OHTANI Hideki
        Proceedings of the conference on computational engineering and science, 19 May 2008
      • Performance evaluation of fast parallel ICCG solvers for simulation of excitement propagation with HPC 2500
        ARAI MUNENORI; IWASHITA TAKESHI; KANAZAWA MASANORI
        情報処理学会研究報告システム評価(EVA), 19 Mar. 2008
      • A Basic Study on the Implicit Error Correction Method and Explicit Error Correction Method for the Finite Element method Using a Mesh with High Aspect Ratio
        MIFUNE Takeshi; MORIGUCHI Souichi; IWASHITA Takeshi; SHIMASAKI Masaaki
        電気学会研究会資料. MAG, マグネティックス研究会, 24 Jan. 2008
      • Introduction of Explicit and Implicit Error Correction Methods
        Takeshi Iwashita; Takeshi Mifune; Masaaki Shimasaki
        International Kyoto-Forum on Krylov Subspace method, pp. 31-34,2008-9., 2008, Peer-reviewed
      • 偏平要素を含む有限要素解析における反復法の収束性改善のための新しい誤差修正法
        守口聡一; 美舩健; 岩下武史; 島崎眞昭
        平成20年電気学会全国大会講演論文集,Vol.5, 5-187,p. 278, 2008-3., 2008, Peer-reviewed
      • Report on Compumag 2007 (the 16^ Conference on the Computation of Electromagnetic Fields)
        FUJIWARA Koji; KAMEARI Akihisa; WAKAO Shinji; TAKAHASHI Yasuhito; IGARASHI Hajime; MATSUO Tetsuji; IWASHITA Takeshi; MURAMATSU Kazuhiro; OKAMOTO Yoshifumi; YAMADA Takashi; KAWASE Yoshihiro; YAMAZAKI Katsumi; HIRATA Katsuhiro
        電気学会研究会資料. SA, 静止器研究会, 20 Sep. 2007
      • New Multigrid Method:Basic Concept of Implicit Correction Multigrid Method
        IWASHITA TAKESHI; MIFUNE TAKESHI; SHIMASAKI MASAAKI
        情報処理学会論文誌コンピューティングシステム(ACS), 15 May 2007
      • New Multigrid Method : Basic Concept of Implicit Correction Multigrid Method(Numerical Algorithms)
        IWASHITA TAKESHI; MIFUNE TAKESHI; SHIMASAKI MASAAKI
        情報処理学会論文誌. コンピューティングシステム, 15 May 2007
      • Parallelization of algebraic multigrid solvers for quasi-static magnetic analysis using A- and A-φ methods
        美舩 健; 小畑 信彦; 岩下 武史
        Proceedings of the conference on computational engineering and science, May 2007
      • Evaluation index of acceleration factor and ordering in shifted ICCG method for electromagnetic field analyses
        Takeshi Iwashita; Takeshi Mifune; Masaaki Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Apr. 2007
      • Application of the Algebraic Multigrid Method to Motor Analysis Using the Mortar Finite Element Method
        MIFUNE Takeshi; MATSUO Tetsuji; IWASHITA Takeshi; SHIMASAKI Masaaki
        電気学会研究会資料. SA, 静止器研究会, 26 Jan. 2007
      • モルタル有限要素法を用いた電動機解析の代数マルチグリッド法 による高速化
        美船健; 松尾哲司; 岩下武史; 島崎眞昭
        第16 回MAGDA コンファレンス, D01, pp. 139-142, 2007-11., 2007, Peer-reviewed
      • “Fast Linear Solver for Heart Simulation on a Shared-Memory Parallel Computer"
        Takeshi Iwashita; Munenori Arai; Masanori Kanazawa; Takao Shimayashi; Akira Amano; Tetsuya Matsuda
        in Proc. 41h International Symposium of Cell/Biodynamics Simulation Project, 2007-11., 2007, Peer-reviewed
      • A Method to Support Cell Physiological Modelling Using Description Language and Ontology
        Shimayoshi Takao; Komurasaki Kazuhiro; Amano Akira; Iwashita Takeshi; Matsuda Tetsuya; Kanazawa Masanori
        Information and Media Technologies, 2007
      • A Method to Support Cell Physiological Modelling Using Description Language and Ontology
        SHIMAYOSHI T; KOMURASAKI KAZUHIRO; AMANO AKIRA; IWASHITA TAKESHI; MATSUDA TETSUYA; KANAZAWA MASANORI
        IPSJ Trans Bioinformatics, Nov. 2006
      • Stability Control Study of Diagonal Type MHD Generator Connected with Power Transmission Network
        INOUE Isao; INUI Yoshitaka; IWASHITA Takeshi; ISHIKAWA Motoo
        電気学会研究会資料. FTE, 新エネルギー・環境研究会, 27 Oct. 2006
      • Preconditioned Iterative Method Involving Implicit Multi-grid Correction
        IWASHITA Takeshi; MIFUNE Takeshi; SHIMASAKI Masaaki
        電気学会研究会資料. SA, 静止器研究会, 24 Aug. 2006
      • A Paralell Block Gauss-Seidel Smoother for Algebraic Multigrid Method in Edge-Element Analyses
        OBATA Nobuhiko; MIFUNE Takeshi; IWASHITA Takeshi; SHIMASAKI Masaaki
        電気学会研究会資料. SA, 静止器研究会, 24 Aug. 2006
      • Speed-Up of Nonlinear Magnetostatic Analyses with the Magnetic Scalar Potential as Unknowns Using the Algebraic Multigrid Method
        MIFUNE Takeshi; IWASHITA Takeshi; SHIMASAKI Masaaki
        電気学会研究会資料. SA, 静止器研究会, 24 Aug. 2006
      • Advances in Finite Element Magnetic Field Analysis and Fast Solution of Large Scale Systems of Linear Equations
        SHIMASAKI Masaaki; MATSUO Testuji; IWASHITA Takeshi; MIFUNE Takeshi
        電気学会研究会資料. SA, 静止器研究会, 24 Aug. 2006
      • A Study of Micromagnetic Simulation on Grid(HPC-1 : Grid Application (1))
        Matsuo Tetsuji; Hironaka Yuki; Iwashita Takeshi; Shimasaki Masaaki
        IPSJ SIG Notes, 31 Jul. 2006
      • New Multilevel Type Iterative Solver : Concept of Implicit Multigrid Method
        IWASHITA TAKESHI; MIFUNE TAKESHI; SHIMASAKI MASAAKI
        IPSJ SIG Notes, 31 Jul. 2006
      • An Ontology Annotation Method of Cell Electrophsiological Models
        SHIMAYOSHI TAKAO; KOMURASAKI KAZUHIRO; AMANO AKIRA; IWASHITA TAKESHI; MATSUDA TETSUYA; KANAZAWA MASANORI
        IPSJ SIG technical reports, 15 Jun. 2006
      • A Study on Linear Iteration Methods of Electrophysiological Excitement Propagation Simulation in the Myocardial Tissue by Using the FHN Model
        YOSHIMORI TADASHI; IWASHITA TAKESHI; KANAZAWA MASANORI
        情報処理学会研究報告. EVA, [システム評価], 20 Mar. 2006
      • Evaluation Index of Orderings in Incomplete Cholesky Preconditioning for Random Sparse Coefficient Matrix(Numerical Algorithm)
        IWASHITA TAKESHI; SHIMASAKI MASAAKI
        情報処理学会論文誌. コンピューティングシステム, 15 Mar. 2006
      • ”Basic Concept of New Multigrid Type Iterative Method: Implicit Multigrid Method”,
        Takeshi Iwashita; Takeshi Mifune; Msaaki Shimasaki
        日本応用数理学会2006 年度年会講演予稿集, pp. 130-131, 2006, Peer-reviewed
      • Computer support for physiological cell modelling using an ontology on cell physiology
        T. Shimayoshi; K. Komurasaki; A. Amano; T. Iwashita; M. Kanazawa; T. Matsuda
        Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 2006, Peer-reviewed
      • ランダムスパース係数行列に対する不完全コレスキー分解前処理におけるオーダリングの評価指標(共著)
        情報処理学会論文誌:コンピューティングシステム, 2006
      • Performance Evaluation of SMP Cluster Type Parallel Computer HPC2500 By Using Parallelized ICCG Solver
        IWASHITA TAKESHI; KANAZAWA MASANORI; SUGISAKI YOSHINORI; AOKI MASAKI
        情報処理学会研究報告. EVA, [システム評価], 22 Nov. 2005
      • Hybrid Image Composition Mechanism for Enhancing Volume Graphics Clusters
        NONAKA Jorji; KUKIMOTO Nobuyuki; EBARA Yasuo; OGATA Masato; IWASHITA Takeshi; KANAZAWA Masanori; KOYAMADA Koji
        IEICE Trans. Inf. & Syst., D, 01 Nov. 2005
      • Hybrid image composition mechanism for enhancing volume graphics clusters
        J Nonaka; N Kukimoto; Y Ebara; M Ogata; T Iwashita; M Kanazawa; K Koyamada
        IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, Nov. 2005
      • A Cell Physiology Ontology for the Authoring of Cell Model
        KOMURASAKI KAZUHIRO; SHIMAYOSHI TAKAO; AMANO AKIRA; IWASHITA TAKESHI; MATSUDA TETSUYA; KANAZAWA MASANORI
        IEICE technical report, 14 Oct. 2005
      • A parallel algebraic multigrid solver for fast magnetic edge-element analyses
        T Mifune; T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, May 2005
      • Performance Evaluation of a Low-Cost Parallel-port-based Hardware Barrier on VG Cluster
        Nonaka Jorji; Iwashita Takeshi; Kanazawa Masanori
        情報処理学会研究報告. EVA, [システム評価], 23 Mar. 2005
      • Automatic Dominant Parameter Determination Technique for Visualization of Multi Parameter Hierarchical Data
        ITOH Takayuki; KIYOSHI Takeru; KOYAMADA Koji; SAKAI Koji; IWASHITA Takeshi; KANAZAWA Masanori
        Journal of the Visualization Society of Japan, 15 Mar. 2005
      • A web framework for a grid computing on multi-platforms
        Koshimoto Hiroo; Kanazawa Masanori; Iwashita Takeshi
        IPSJ SIG Notes, 07 Mar. 2005
      • A web framework for a grid computing on multi-platforms
        Koshimoto Hiroo; Kanazawa Masanori; Iwashita Takeshi
        IPSJ SIG Notes, 07 Mar. 2005
      • New Evaluation Method of Ordering in Incomplete Cholesky Preconditioning
        IWASHITA TAKESHI; SHIMASAKI MASAAKI
        IPSJ SIG Notes, 07 Mar. 2005
      • スーパーコンピュータにおける大規模数値計算から可視化まで
        金澤 正憲; 岩下 武史; Nonaka Jorji
        シンポジウム報告集, Mar. 2005
      • Visualization of Multi Parameter Hierarchical Data Using Automatic Dominant Parameter Determination Technique
        Takeru Kiyoshi; Takayuki Itoh; Koji Koyamada; Koji Sakai; Takeshi Iwashita; Masanori Kanazawa
        NICOGRAPH International 2005, pp.31-35, 2005, Peer-reviewed
      • 準定常有限要素磁界解析における代数マルチグリッド法 とICCG 法の比較
        友藤大輔; 美舩健; 岩下武史; 島崎眞昭
        平成17 年電気関係学会関西支部連合大会講演論文集, 2005-11., 2005, Peer-reviewed
      • 節点要素および辺要素を用いた有限要素磁界解析における AMGCG 法の並列化に関する検討
        小畑信彦; 美舩健; 岩下武史; 島崎眞昭
        平成17 年電気関係学会関西支部連合大会講演論文集, 2005-11., 2005, Peer-reviewed
      • Comparison criteria for parallel orderings in ILU preconditioning
        T Iwashita; Y Nakanishi; M Shimasaki
        SIAM JOURNAL ON SCIENTIFIC COMPUTING, 2005
      • Volume Rendering Acceleration by using Object Boundary Projection and Parallel Processing
        Jorji Nonaka; Nobuyuki Kukimoto; Yasuo Ebara; Takeshi Iwashita; Masanori Kanazawa; Koji Koyamada
        Journal of the Institute of Image Electronics Engineers of Japan, 2005
      • Comparison criteria for parallel orderings in ILU preconditioning
        T Iwashita; Y Nakanishi; M Shimasaki
        SIAM JOURNAL ON SCIENTIFIC COMPUTING, 2005
      • 並列化有限要素解析のためのブロック化赤-黒順序付け法の応用について
        岩下 武史; 島崎 眞昭
        シンポジウム報告集, Mar. 2004
      • 輪郭投影法と並列化によるボリュームレンダリングの高速化
        ノナカ ジョルジ; 岩下武史; 金澤正憲; 小山田耕二
        ビジュアルコンピューティングワークショップ2004in白浜, 2004, Peer-reviewed
      • A fast AMG solver for electromagnetic finite edge-element analyses on shared memory parallel computers
        T. Mifune; T. Iwashita; M. Shimasaki
        PIERS 2004 - Progress in Electromagnetics Research Symposium, Extended Papers Proceedings, 2004, Peer-reviewed
      • 三次元有限要素磁界解析のための多色順序付けを用いた並列代数マルチグリッド解法
        美舩健; 岩下武史; 島崎眞昭
        日本応用数理学会2004 年年会講演予稿集, pp. 404-405, 2004, Peer-reviewed
      • Bounding Volume as a Method for Accelerating Volume Rendering
        NONAKA Jorji; KOYAMADA Koji; IWASHITA Takeshi; KANAZAWA Masanori
        可視化情報学会誌. Suppl., 01 Jul. 2003
      • Algebraic multigrid method for nonsymmetric matrices arising in electromagnetic finite-element analyses
        T Mifune; T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, May 2003
      • Algebraic block red-black ordering method for parallelized ICCG solver with fast convergence and low communication costs
        T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, May 2003
      • New algebraic multigrid preconditioning for iterative solvers in electromagnetic finite edge-element analyses
        T Mifune; Iwashita, T; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, May 2003
      • 代数的マルチグリッド法と電磁界解析 (微分方程式の数値解法と線形計算)
        島崎 眞昭; 岩下 武史; 美船 健
        数理解析研究所講究録, May 2003
      • Proposal of A New Evaluation Method for Ordering in Incomplete LU Factorization Preconditioned Iterative Methods
        IWASHITA TAKESHI; NAKANISHI YUUICHI; SHIMASAKI MASAAKI
        IPSJ SIG Notes, 11 Mar. 2003
      • センターにおけるグリッド環境構築と課題
        平野 彰雄; 小西 龍一; 岩下 武史
        シンポジウム報告集, Mar. 2003
      • 不完全LU分解前処理付き反復法におけるオーダリングと収束性の関係について
        岩下 武史; 中西 佑一; 島崎 眞昭
        シンポジウム報告集, Mar. 2003
      • 輪郭投影法を用いたスカラ並列計算機上でのボリュームレンダリング
        Nonaka Jorji; 小山田 耕二; 岩下 武史
        シンポジウム報告集, Mar. 2003
      • Block red-black ordering: A new ordering strategy for parallelization of ICCG method
        T Iwashita; M Shimasaki
        INTERNATIONAL JOURNAL OF PARALLEL PROGRAMMING, Feb. 2003
      • Parallel Image-Order Boundary-Projected Ray-Casting
        Nonaka J; Watashiba Y; Kukimoto N; Sakamoto N; Koyamada K; Iwashita T; Kanazawa M
        The 3rd IASTED International Conference Visualization, Imaging, and Image Processing (VIIP 2003), pp. 779-784, 2003, Peer-reviewed
      • Fast linear equation solvers in high performance electromagnetic field analysis
        M Shimasaki; T Iwashita; T Mifune
        JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, Dec. 2002
      • Application of Parallelized ICCG Solver Based on Algebraic Multi-Color Ordering Method to Electromagnetic Field Analyses
        IWASHITA Takeshi; SHIMASAKI Masaaki
        電気学会研究会資料. RM, 回転機研究会, 02 Sep. 2002
      • AN APPLICATION OF ALGEBRAIC MULTIGRID ITERATION METHODS TO FINITE EDGE-ELEMENT ANALYSES
        MIFUNE Takeshi; IWASHITA Takeshi; SHIMASAKI Masaaki
        計算工学講演会論文集, 20 May 2002
      • Algebraic multicolor ordering for parallelized ICCG solver in finite-element analyses
        T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Mar. 2002
      • A fast solver for FEM analyses using the parallelized algebraic multigrid method
        T Mifune; T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Mar. 2002
      • 有限要素解析用並列化ICCGゾルバの開発について
        岩下 武史; 金澤 正憲; 島崎 眞昭
        情報基盤センター年報, Mar. 2002
      • Construction and ordering of edge elements for parallel computation
        T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Sep. 2001
      • A PARALLELIZED AMG FAST SOLVER TO ELECTROMAGNETIC FEM ANALYSES
        MIFUNE Takeshi; IWASHITA Takeshi; SHIMASAKI Masaaki
        計算工学講演会論文集, 30 May 2001
      • 多色順序付けを用いた並列化ICCGソルバに関する検討-ブロック化による性能向上と工学的応用-
        岩下武史
        第8回「ハイパフォーマンスコンピューティングとアーキテクチャの評価」に関する北海道ワークショップ, 2001, 2001
      • Induction Heating Optimization using Genetic Algorism on Parallel Computer
        IWASHITA Takeshi; KIRIKOSHI Tasuku; SHIMASAKI Masaaki
        電気学会研究会資料. SA, 静止器研究会, 05 Aug. 2000
      • Parallel processing of 3-D Eddy current analysis with moving conductor using parallelized ICCG solver with renumbering process
        T Iwashita; M Shimasaki
        IEEE TRANSACTIONS ON MAGNETICS, Jul. 2000
      • THREE-DIMENSIONAL EDDY CURRENT ANALYSES USING PARALLELIZED ICCG SOLVERS
        IWASHITA Takeshi; SOKABE Ryo; MIFUNE Takeshi; SHIMASAKI Masaaki
        Proceedings of the conference on computational engineering and science, 24 May 2000
      • Three-dimensional finite brick-type edge-element Eddy current analysis using parallelized linear-system solvers
        T Iwashita; T Mifune; R Sokabe; M Shimasaki
        INTERNATIONAL CONFERENCE ON PARALLEL COMPUTING IN ELECTRICAL ENGINEERING - PARELEC 2000, PROCEEDINGS, 2000
      • Fault Analysis of Interconnecting System Between Commercial-Scale Subsonic Diagonal Type MHD Generator and AC Power System
        The Transactions of The Institute of Electrical Engineers of Japan, 2000
      • Parallelized 3-D Eddy Current Analysis Using First Order Blick Type Edge Element
        IWASHITA Takeshi; SOKABE Ryo; SHIMASAKI Masaaki
        電気学会研究会資料. RM, 回転機研究会, 19 Aug. 1999
      • Effects of Faults of Interconnecting System on Subsonic Diagonal Type MHD Generator
        IWASHITA T.
        Proceeding of the 1998 International Symposium on Advanced Energy Technology, 1998
      • Performance characteristics of coal-fired MHD generator line-commutated inverter system of commercial scale
        T Iwashita; Y Inui; T Matsuo; J Umoto; M Ishikawa
        POWERCON '98: 1998 INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY - PROCEEDINGS, VOLS 1 AND 2, 1998
      • Stabilization Analysis of Commercial-Scale Subsonic Diagonal Type MHD Generator Considering Loading Condition
        The Transactions of The Institute of Electrical Engineers of Japan, 1998
      • Performance analysis of coal-fired MHD Faraday channel at IEE, China
        M Ishikawa; T Iwashita; J Tong
        ENERGY CONVERSION AND MANAGEMENT, Mar. 1997
      • Stabilization Analysis of Coal-Fired Subsonic Diagonal Type MHD Generators of Commercial Scale -Improvement of Stability of MHD Generators with Reduced Velocity-
        IWASHITA Takeshi; MATSUO Tetsuji; ISHIKAWA Motoo; UMOTO Juro
        The Transactions of The Institute of Electrical Engineers of Japan, 1997
      • 中国電工研石炭燃焼MHD発電実験の解析的検討
        石川 本雄; 岩下 武史; JIANZHONG Tong
        研究発表会講演論文集 = / Japan Society of Energy and Resources, 16 Apr. 1996
      • Preliminary Analyses of Coal-Fired MHD Power Experients Carried Out at IEE, China
        27th AIAA Plasmadyanics and Lasers Conference, 1996
      • Stabilization Analysis of Supersonic Diagonal Type MHD Generators of Commercial Scale
        The Transactions of The Institute of Electrial Engineers of Japan, 1996
      • 大型亜音速ダイアゴナル形MHD発電機の入口・出口条件を考慮した安定性解析
        岩下 武史; 松尾 哲司; 石川 本雄; 卯本 重郎
        電気学会研究会資料. ESC, 新・省エネルギー研究会, 08 Sep. 1995
      • Numerical Analysis of 25 HWth Coal-Fired MHD Generator at IEE, China
        Proceedings of 33rd Symposium on Engineering Aspects of Magnetohydrodynamics, 1995

      Presentations

      • High performance multi-threaded ILU-GMRES solver with algebraic block multi-color ordering
        Takeshi Iwashita; Senxi Li; Takeshi Fukaya
        International Symposium on Computational Science at Scale (CoSaS 2018), 06 Sep. 2018
      • HACApK: Library for hierarchical matrices with adaptive cross approximation
        Akihiro Ida; Takeshi Iwashita
        The 3rd International Workshops on Advances in Computational Mechanics (IWACOM-III), Oct. 2015
      • H-matrices with ACA for Large-scale Simulation using Integral Equation Method
        Akihiro Ida; Takeshi Iwashita
        ESPA2015, Sep. 2015, Invited
      • 領域分割および時間分割に基づく大規模並列磁界解析
        高橋康人; 藤原耕二; 岩下武史; 中島浩
        平成27年電気学会全国大会, 5-S5-4, Mar. 2015
      • スライドメッシュを考慮した領域分割型並列有限要素法による回転機の磁界解析
        高橋康人; 藤原耕二; 岩下武史; 中島浩
        電気学会静止器・回転機合同研究会資料, SA-15-49/RM-15-41, Mar. 2015
      • 動的負荷分散による階層型行列計算の並列化
        棟形克己; 平石拓; 伊田明弘; 岩下武史; 中島浩
        第148回情報処理学会HPC研究会, Mar. 2015
      • New fill-in strategy for fast ICCG solver using SIMD vectorization
        Takeshi Iwashita
        International Workshop on Information Technology, Applied Mathematics and Science (IMS2015), Mar. 2015
      • Numerical Libraries and Software Framework for Application Programs in the Post Peta Era
        Takeshi Iwashita
        BDEC Barcelona, Jan. 2015
      • A Variable Preconditioning of Krylov Subspace Methods for Hierarchical Matrices with Adaptive Cross Approximation
        Akihiro Ida; Takeshi Iwashita; Takeshi Mifune; Yasuhito Takahashi
        COMPUMAG2015, 2015
      • Parallel Finite Element Analysis of Rotating Machines Based on Domain Decomposition Considering Nonconforming Mesh Connection
        Yasuhito Takahashi; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        COMPUMAG2015, 2015
      • Development of Software Infrastructure for Large-scale BEM Analyses
        Akihiro Ida; Takeshi Iwashita
        International Symposium on Post Petascale System Software (ISP2S2), Dec. 2014
      • 大規模境界要素解析に向けた並列化階層型行列法ライブラリの開発
        伊田明弘; 伊田明弘; 岩下武史; 岩下武史; 美舩健; 美舩健; 高橋康人; 高橋康人
        計算工学講演会論文集(CD-ROM), 11 Jun. 2014
      • Parallel TP-EEC Method Based on Phase Conversion for Time-Periodic Nonlinear Magnetic Field Problems
        Yasuhito Takahashi; Tadashi Tokumasu; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        The 16th Biennial IEEE Conference on Electromagnetic Fields Computation (IEEE-CEFC2014), May 2014
      • Analysis of Induced Electric Field in Human Body by ELF Magnetic Field Using Parallel FMM Accelerated BEM
        Yasuhito Takahashi; Akira Ahagon; Koji Fujiwara; Takeshi Iwashita; Hiroshi Nakashima
        The 9th International Conference on Computation in Electromagnetics (CEM2014), Mar. 2014
      • Parallel H-Matrices with Adaptive Cross Approximation for Large-Scale Simulation abstract updated
        Akihiro Ida; Takeshi Iwashita
        SIAM Conference on Parallel Processing and Scientific Computing (SIAM PP14), Feb. 2014
      • An Application of Geometric Block Diagonal Preconditioning for Nonconforming Voxel Finite Element Analysis
        SHIMIZU KOHEI; MIFUNE TAKESHI; IWASHITA TAKESHI; MATSUO TETSUJI
        電気学会静止器研究会資料, 26 Sep. 2013
      • Application of Multithreaded ICCG Solver Based on Algebraic Block Multi-color Ordering to Finite Element Electromagnetic Field Analyses
        SEMBA KAZUKI; TANI KOJI; YAMADA TAKASHI; IWASHITA TAKESHI; TAKAHASHI YASUHITO; NAKASHIMA HIROSHI
        電気学会静止器研究会資料, 26 Sep. 2013
      • 高速行列演算を用いた境界要素解析支援フレームワーク
        伊田明弘; 岩下武史; 美舩健; 高橋康人
        計算工学講演会論文集(CD-ROM), 19 Jun. 2013
      • 並列計算機上での境界要素解析を支援するソフトウェアフレームワークの開発
        野瀬田裕樹; 河合直聡; 伊田明弘; 岩下武史; 中島浩; 美舩健; 高橋康人
        情報処理学会研究報告(CD-ROM), 15 Apr. 2013
      • Improvement of Convergence Characteristic in T-Omega Finite Element Analysis Including Conductors with Holes
        MIFUNE TAKESHI; KAMIHATA SATOSHI; IWASHITA TAKESHI; MATSUO TETSUJI
        電気学会静止器研究会資料, 10 Sep. 2012
      • Investigation on Practical Implementation of ICCG Method and Proposal of Benchmarking Procedure to Evaluate Its Computation Speed
        OKAMOTO YOSHIFUMI; TAKAHASHI YASUHITO; FUJIWARA KOJI; AHAGON AKIRA; MIFUNE TAKESHI; IWASHITA TAKESHI
        電気学会静止器研究会資料, 10 Sep. 2012
      • Time-Domain Parallel Finite-Element Method for Fast Magnetic Field Analysis of Induction Motors
        TAKAHASHI Yasuhito; TOKUMASU Tadashi; FUJITA Masafumi; IWASHITA Takeshi; WAKAO Shinji; FUJIWARA Koji; ISHIHARA Yoshiyuki
        電気学会研究会資料. SA, 静止器研究会, 26 Jan. 2012
      • A Basic Study on the Use of Algebraic Multigrid Method for Magnetic Edge-Element Analysis with A-Method
        MIFUNE Takeshi; NAMBA Ryosuke; IWASHITA Takeshi; MATSUO Tetsuji
        電気学会研究会資料. SA, 静止器研究会, 25 Aug. 2011
      • Automatic Determination of Acceleration Factor Based on Residual and Functional in Shifted ICCG Method
        KITAO Junji; TAKAHASHI Yasuhito; FUJIWARA Koji; ISHIHARA Yoshiyuki; MIFUNE Takeshi; IWASHITA Takeshi
        電気学会研究会資料. SA, 静止器研究会, 25 Aug. 2011
      • ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications with Automatic Tuning
        Kengo Nakajima; Masaki Satoh; Takashi Furumura; Hiroshi Okuda; Takeshi Iwashita; Hide Sakaguchi
        IPSJ SIG Notes, 20 Jul. 2011
      • Job-level Parallel Executions for Satisfying Distributed Constraints
        Tatsuya Abe; Tasuku Hiraishi; Yohei Miyake; Takeshi Iwashita; Hiroshi Nakashima
        IPSJ SIG Notes, 20 Jul. 2011
      • Cache-Aware Implementation for Performance Improvement of Three-Dimensional FDTD Kernel and its Performance Evaluation
        Takeshi Minami; Takeshi Iwashita; Hiroshi Nakashima
        IPSJ SIG Notes, 20 Jul. 2011
      • Cache-Aware Performance Improvement of FDTD Kernel
        Takeshi Minami; Takeshi Iwashita; Yasuhito Takahashi; Hiroshi Nakashima
        IPSJ SIG Notes, 15 Feb. 2010
      • A Study of Demagnetizing Field in Micromagneic Simulation under Periodic Boundary Condition
        MATSUO Tetsuji; YAMAZAKI Yuya; IWASHITA Takeshi
        電気学会研究会資料. MAG, マグネティックス研究会, 28 Jan. 2010
      • Block Red-Black Ordering for Parallelized ICCG Solver with Fewer Synchronization Points(Parallel Processing)
        IWASHITA TAKESHI; SHIMASAKI MASAAKI
        IPSJ Journal, 15 Apr. 2002
      • A Web-based Test Environment for Hardware/Software Co-design
        SAWADA Atsushi; IWASHITA Takeshi; KANBARA Hiroyuki
        IPSJ SIG Notes, 21 Nov. 2001
      • A PARALLELIZED AMG FAST SOLVER TO ELECTROMAGNETIC FEM ANALYSES
        MIFUNE Takeshi; IWASHITA Takeshi; SHIMASAKI Masaaki
        計算工学講演会論文集, 30 May 2001
      • A Study of Parallelized ICCG Solvers Based on Multi-Color Ordering Improvement in Performance by Blocking Approach and Application to Engineering Problems
        Iwashita Takeshi; Shimasaki Masaaki
        IPSJ SIG Notes, 08 Mar. 2001
      • Induction Heating Optimization using Genetic Algorism on Parallel Computer
        IWASHITA Takeshi; KIRIKOSHI Tasuku; SHIMASAKI Masaaki
        電気学会研究会資料. SA, 静止器研究会, 05 Aug. 2000
      • Parallelized 3-D Eddy Current Analysis Using First Order Blick Type Edge Element
        IWASHITA Takeshi; SOKABE Ryo; SHIMASAKI Masaaki
        電気学会研究会資料. RM, 回転機研究会, 19 Aug. 1999
      • 大型亜音速ダイアゴナル形MHD発電機の入口・出口条件を考慮した安定性解析
        岩下 武史; 松尾 哲司; 石川 本雄; 卯本 重郎
        電気学会研究会資料. ESC, 新・省エネルギー研究会, 08 Sep. 1995

      Works

      • 高周波電磁界解析用連立一次方程式解法の並列処理による高速化 民間等共同研究: 株式会社 村田製作所
        From 2005
      • 分散メモリ環境における前処理を含む並列版反復型マトリクスソルバの開発 民間等共同研究: 株式会社 ヴァイナス
        From 2005
      • 高周波電磁界解析用連立一次方程式解法の高速化について (民間等共同研究: 株式会社 村田製作所)
        From 2004

      Awards

      • 29 May 2018
        xSIG2018, Best Research Award(情報処理学会)
      • 01 Mar. 2022
        研究会活動貢献賞(情報処理学会)
      • 29 May 2019
        xSIG2019, Poster Award(情報処理学会)
      • 11 Apr. 1997
        平成8年度 電気関係学会 関西支部連合大会奨励賞(電気学会)
      • 02 Aug. 2023
        xSIG2023, Outstanding Research Award(情報処理学会)
      • 25 Jan. 2012
        HPCS2012最優秀論文賞(情報処理学会)
      • 02 Sep. 2010
        平成21年度 電気学会 電力・エネルギー部門誌 優秀論文賞
      • 31 Mar. 1997
        平成8年度 電気学会 電力・エネルギー部門大会 優秀論文発表賞
      • 31 Mar. 1998
        電気学会 電力・エネルギー部門研究会 優秀論文発表賞
      • 14 Mar. 2008
        社団法人情報処理学会山下記念研究賞

      External funds: Kakenhi

      • Next-generation high-performance linear solver for future computational science and engineering
        Grant-in-Aid for Scientific Research (A)
        Medium-sized Section 60:Information science, computer engineering, and related fields
        Hokkaido University
        岩下 武史
        From 01 Apr. 2023, To 31 Mar. 2027, Granted
        高性能計算;計算科学;計算工学;線形ソルバ;アクセラレータ
      • Overdamped Langevin方程式向けの時間積分並列化手法
        Grant-in-Aid for Scientific Research (C)
        Basic Section 60100:Computational science-related
        Kogakuin University
        藤井 昭宏
        From 01 Apr. 2022, To 31 Mar. 2025, Granted
        並列時間進;半陰解法;代数的多重格子法;Parallel in Time;Overdamped Langevin方程式
      • Construction of numerical linear algebra based on lattice H-matrices and its high-performance implementation on modern architectures
        Grant-in-Aid for Scientific Research (B)
        Basic Section 60090:High performance computing-related
        Japan Agency for Marine-Earth Science and Technology
        伊田 明弘
        From 01 Apr. 2021, To 31 Mar. 2024, Granted
        H行列法;行列近似;数値線形代数;並列計算;混合精度演算;近似計算;低ランク;高性能計算;アルゴリズム
      • Development of technology for scientific simulations only using integer arithmetic for next-generation computers
        Grant-in-Aid for Challenging Research (Exploratory)
        Medium-sized Section 60:Information science, computer engineering, and related fields
        Hokkaido University
        岩下 武史
        From 30 Jul. 2020, To 31 Mar. 2024, Granted
        高性能計算;計算科学;線形反復法;整数演算;反復改良法;整数演算命令;ステンシル計算
      • Innovative Methods for Scientific Computing in the Exascale Era by Integrations of (Simulation+Data+Learning)
        Grant-in-Aid for Scientific Research (S)
        Broad Section J
        The University of Tokyo
        中島 研吾
        From 26 Jun. 2019, To 31 Mar. 2024, Granted
        「計算・データ・学習」融合;大規模シミュレーション;データ駆動型アプローチ;混合精度演算・精度保証;ヘテロジニアス環境;計算科学・データ科学・機械学習の融合;エクサスケールシステム;高性能・高信頼性・省電力アルゴリズム;自動チューニング;精度保証;スーパーコンピューティング;計算科学;データ同化;機械学習;低精度・混合精度・変動精度演算;ヘテロジニアスコンピューテイング;混合精度演算
      • High performance linear solver for advanced computational electromagnetics
        Grant-in-Aid for Scientific Research (B)
        Basic Section 60100:Computational science-related
        Hokkaido University
        TAKESHI IWASHITA
        From 01 Apr. 2019, To 31 Mar. 2022, Project Closed
        高性能計算;計算電磁気学;線形反復法;混合精度演算;時間並列処理;H行列;計算科学;並列処理;電磁場解析;非定常解析;非線形解析;階層型行列;有限要素法
      • Over 100 GHz Time-Space Superconductor Computing for Post-Moore Era
        Grant-in-Aid for Scientific Research (A)
        Medium-sized Section 60:Information science, computer engineering, and related fields
        Kyushu University
        Koji Inoue
        From 01 Apr. 2019, To 31 Mar. 2022, Project Closed
        コンピュータアーキテクチャ;超伝導コンピューティング;マイクロプロセッサ;プロセッサ;アーキテクチャ
      • Research on Regularization to Exploit SIMD-vector Operations
        Grant-in-Aid for Scientific Research (B)
        Basic Section 60090:High performance computing-related
        Kyoto University
        中島 浩
        From 01 Apr. 2018, To 31 Mar. 2021, Discontinued
        規則化;SIMDベクトル演算;データ構造変換
      • Enhancement of H-matrix library and optimization for next generation supercomputers
        Grant-in-Aid for Scientific Research (B)
        The University of Tokyo
        Akihiro Ida
        From 01 Apr. 2017, To 31 Mar. 2020, Project Closed
        近似計算;低ランク;H行列法;ライブラリ;アルゴリズム;並列計算;高性能計算;ハイパフォーマンスコンピューティング;H行列;低ランク行列;行列近似;メニーコア;GPU;H行列法;GPU;低ランク行列近似
      • High Performance Linear Solver Library Using Information Obtained in Previous Solution Steps
        Grant-in-Aid for Challenging Exploratory Research
        Hokkaido University
        TAKESHI IWASHITA
        From 01 Apr. 2014, To 31 Mar. 2016, Project Closed
        高性能計算;線形反復法;誤差修正法;自動生成;ハイパフォーマンスコンピューティング;数値解析;電磁場解析;有限要素解析;ハイパフォーマンス・コンピューティング;情報システム;機械学習
      • Realization of high performance electromagnetic field analyses for sophisticated design of electric machines
        Grant-in-Aid for Scientific Research (B)
        Hokkaido University
        Takeshi Iwashita
        From 01 Apr. 2014, To 31 Mar. 2017, Project Closed
        電気機器;電磁場解析;並列処理;高性能計算;ハイパフォーマンスコンピューティング;線形反復法;最適化
      • Research on the framework of high-performance application development targeting manycore processors
        Grant-in-Aid for Scientific Research (B)
        Kyoto University
        Hiroshi Nakashima
        From 01 Apr. 2014, To 31 Mar. 2017, Project Closed
        並列処理;メニーコアプロセッサ;プログラム変換
      • Exa-scale Adaptation to Sparse Iterative Library with Run-time Auto-tuning Facility
        Grant-in-Aid for Scientific Research (B)
        The University of Tokyo
        Takahiro KATAGIRI
        From 01 Apr. 2012, To 31 Mar. 2015, Project Closed
        自動チューニング;実行時最適化;Xabclib;OpenATLib;疎行列反復解法;pXabclib;OpenFOAM;エクサスケールコンピューティング;ハイブリッドMPI;非均質計算機
      • Composing High-Performance Simulation Codes by Temporal-Spatial Tiling
        Grant-in-Aid for Scientific Research (B)
        Kyoto University
        Hiroshi NAKASHIMA
        From 01 Apr. 2011, To 31 Mar. 2014, Project Closed
        ハイパフォーマンスコンピューティング;タイリング;コード生成;コード変換;並列処理・分散処理
      • High Performance Parallel Linear Solver for Peta-scale Simulation
        Grant-in-Aid for Young Scientists (A)
        Kyoto University
        Takeshi IWASHITA
        From 01 Apr. 2009, To 31 Mar. 2012, Project Closed
        ハイパフォーマンスコンピューティング;線形反復法;ハイパフォーマンス・コンピューティング;計算機システム;シミュレーション工学;応用数学;マルチグリッド法;有限要素法;数値解析
      • Development of Auto-tuning Specification Language Towards Manycore and Massively Parallel Processing Era
        Grant-in-Aid for Scientific Research (B)
        The University of Tokyo
        Takahiro KATAGIRI
        From 01 Apr. 2009, To 31 Mar. 2012, Project Closed
        高性能計算;並列化;マルチコア;GPU;ソフトウェア自動チューニング;ABCLibScript;コード自動生成;高生産性;超並列;並列実験;自動チューニング;品質管理;T2Kオープンスパコン;実行時最適化
      • Parallelization Methodology Library and Its Framework Technology
        Grant-in-Aid for Scientific Research (B)
        Kyoto University
        Hiroshi NAKASHIMA
        From 01 Apr. 2008, To 31 Mar. 2011, Project Closed
        並列処理・分散処理;並列化ライブラリ
      • Efficient and Accurate Electromagnetic Field Analysis for Electric Machines Using Homogenized Vector Magnetic Hysteresis Model of Laminated Iron-Cores
        Grant-in-Aid for Scientific Research (C)
        Kyoto University
        Tetsuji MATSUO
        From 01 Apr. 2007, To 31 Mar. 2010, Project Closed
        電気機器工学;ベクトルヒステリシス;マルチスケールモデル;電磁鋼板;マイクロ磁気学;均質化
      • Technology for automatic selection of methods and parameters in parallel iterative solvers
        Grant-in-Aid for Young Scientists (B)
        Kyoto University
        Takeshi IWASHITA
        From 01 Apr. 2006, To 31 Mar. 2009, Project Closed
        並列計算機;線形反復法;収束性;解法選択;マルチグリッド法;電磁場解析;誤差修正;並列処理;Implicit error correction;Explicit error correction;ILU分解前処理;反復法;性能評価
      • Fast Electromagnetic Mortar Finite Element Analyses with High Accuracy Based on Algebraic Multigrid Methods
        Grant-in-Aid for Scientific Research (C)
        Kyoto University
        Masaaki SHIMASAKI
        From 01 Apr. 2005, To 31 Mar. 2007, Project Closed
        電磁界解析;モルタル有限要素法;代数マルチグリッド法;電動機解析;スライディングメッシュ;ベクトル磁気特性, Electromagnetic Analyses;Mortar Finite Element Methods;Algebraic Multigrid Methods;Motor Analyses;Sliding Mesh
      • 代数マルチグリッド法と並列処理技術による高速な連立一次方程式の求解法
        Grant-in-Aid for Young Scientists (B)
        Kyoto University
        岩下 武史
        From 01 Apr. 2004, To 31 Mar. 2006, Project Closed
        マルチグリッド法;AMG法;並列処理;ILU分解;グリッド;有限要素解析;マルチグリッド;AMG;ILUスムーザ;線形ソルバ;性能評価;パラメータ;自動設定
      • Fast Large-Scale Electromagnetic Field Analysis Using PC Cluster for Optimal Design of Electric Machines
        Grant-in-Aid for Scientific Research (C)
        Kyoto University
        Masaaki SHIMASAKI
        From 01 Apr. 2002, To 31 Mar. 2004, Project Closed
        代数マルチグリッド(AMG)法;辺要素有限要素法;並列ICCG法;ブロック化赤-黒順序付け;並列遺伝アルゴリズム;磁気ヒステリシス;ストップモデル;代数マルチグリッド法;連立一次方程式;電磁界解析;並列計算;代数的マルチグリッド法;H行列;遺伝的アルゴリズム;最適化問題;多峰性関数;電磁鋼板;ヒステリシスモデル, algebraic multigrid (AMG) method;finite edge-element method;parallel ICCG method;block red-black ordering;parallel genetic algorithm;magnetic hysteresis;stop model
      list
        Last Updated :2024/04/22

        Academic, Social Contribution

        Committee Memberships

        • From Sep. 2023, To Present
          情報基盤センター 招へい教員, 北海道大学
        • From Aug. 2022, To Present
          客員研究員, 理化学研究所、計算科学研究センター
        • From Apr. 2022, To Present
          運営委員, 情報処理学会 ハイパフォーマンスコンピューティング研究会
        • From Apr. 2022, To Present
          副委員長, HPCI連携サービス委員会
        • From Apr. 2022, To Present
          コンピュータサイエンス領域 財務委員, 情報処理学会
        • From Jan. 2020, To Present
          Steering committee member, HPC Asia
        • From Apr. 2018, To Present
          Application benchmark section member, IEEE IRDS
        • From Apr. 2012, To Present
          委員, HPCI連携サービス運営・作業部会
        • From Apr. 2010, To Present
          運営委員, 日本応用数理学会 行列・固有値部会
        • From Apr. 2022, To Nov. 2022
          SC|22 Program Committee Member
        • From Oct. 2021, To Jun. 2022
          Member, ICCS2022 Program Committee
        • From Apr. 2018, To Mar. 2022
          主査, 情報処理学会 ハイパフォーマンスコンピューティング研究会
        • From Apr. 2018, To Mar. 2022
          編集委員, 情報処理学会論文誌コンピューティングシステム 編集委員会
        • From Apr. 2017, To Mar. 2022
          委員, HPCI連携サービス委員会
        • From Oct. 2020, To Jun. 2021
          Program Committee Member, ICCS2021
        • From Dec. 2019, To Jun. 2020
          Program Committee Member, ICCS2020
        • From Jan. 2018, To Jan. 2020
          General Chair, HPCAsia2020
        • From Apr. 2012, To Dec. 2019
          委員, 筑波大学計算科学研究センター 共同研究委員会
        • From Aug. 2018, To Aug. 2019
          Program Committee Member, ICPP2019
        • From Sep. 2018, To Jun. 2019
          Program Committee Member, ICCS2019
        • From Jan. 2018, To Jan. 2019
          Program Committee Co-Chair, HPCAsia2019
        • From Oct. 2017, To Nov. 2018
          Tutorial Committee Member, SC|18
        • From Nov. 2017, To Jun. 2018
          Program Committee Member, ICCS2018
        • From Apr. 2015, To Mar. 2018
          運営委員, 情報処理学会ハイパフォーマンスコンピューティング研究会
        • From Mar. 2017, To Jan. 2018
          Program Committee Track Chair, HPCAsia2018
        • From Oct. 2016, To Nov. 2017
          Tutorial Committee Member, SC|17
        • From Oct. 2016, To Nov. 2017
          Poster Committee Member, SC|17
        • From Nov. 2016, To Jun. 2017
          Program Committee Member, ICCS2017
        • From May 2013, To May 2017
          幹事, 自動チューニング研究会
        • From Apr. 2015, To Mar. 2017
          副委員長, 情報処理学会論文誌コンピューティングシステム 編集委員会
        • From Mar. 2016, To Nov. 2016
          Tutorial Committee Member, SC|16
        • From Sep. 2015, To Sep. 2016
          Member, IEEE Cluster2016 Program Committee
        • From Sep. 2015, To Jul. 2016
          Member, VECPAR2016 Scientific Committee
        • From Aug. 2015, To Jun. 2016
          Member, ICCS2016 Program Committee
        • From Mar. 2015, To Jun. 2016
          Local Chair, ACM HPDC2016
        • From Apr. 2015, To Jan. 2016
          副委員長, ACSI2016 組織委員会
        • From Dec. 2014, To Jul. 2015
          Member, COMPUMAG2015 Editorial Board
        • From Sep. 2014, To May 2015
          Member, iWAPT2015 Program Committee
        • From May 2013, To Mar. 2015
          委員長, ACSI2015 プログラム委員会
        • From Apr. 2011, To Mar. 2015
          幹事, 情報処理学会ハイパフォーマンスコンピューティング研究会
        • From Jan. 2014, To Nov. 2014
          Member, SC|14 Poster Committee
        • From Sep. 2013, To Jul. 2014
          Member, VECPAR2014 Scientific Committee
        • From Nov. 2012, To Nov. 2013
          Member, SC|13 Program Committee
        • From Jun. 2012, To Jun. 2013
          Chair, iWAPT2013 Program Committee
        • From Aug. 2012, To May 2013
          トラックチェア, SACSIS2013 プログラム委員会
        • From Jun. 2011, To Jun. 2012
          Vice Chair, iWAPT2012 Program Committee
        • From May 2011, To Jan. 2012
          副委員長, HPCS2012 実行委員会
        • From Aug. 2010, To Sep. 2011
          Member, CCGrid2011 Program Committee
        • From Apr. 2007, To Mar. 2011
          運営委員, 情報処理学会ハイパフォーマンスコンピューティング研究会
        • From Nov. 2009, To Nov. 2010
          Member, SC|11 Program Committee
        • From May 2009, To Jan. 2010
          副委員長(広報・ポスター担当), HPCS2010 プログラム委員会
        • From May 2007, To Jan. 2008
          副委員長(論文担当), HPCS2008 プログラム委員会

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