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

• J-Global ID

  200901000149290174

• External link

  https://hpc.media.kyoto-u.ac.jp/~iwashita/iwashita_prof.html

researchmap URL

• https://researchmap.jp/read0057409

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

• An integer arithmetic-based AMG preconditioned FGMRES solver

  Kengo Suzuki; Takeshi Fukaya; Takeshi Iwashita

  ACM Transactions on Mathematical Software, 18 Nov. 2024

  
• Stability of subsonic MHD generators operated with partially ionized coal combustion gas

  Takeshi Iwashita; Tetsuji Matsuo; Motoo Ishikawa; Juro Umoto

  28th Plasmadynamics and Lasers Conference, 1997

  
• Stability analysis of large-scale coal-fired subsonic diagonal type MHD generators considering inlet and exit conditions

  Takeshi Iwashita; Tetsuji Matsuo; Motoo Ishikawa; Juro Umoto

  27th Plasma Dynamics and Lasers Conference, 1996

  
• 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, Peer-reviewed

  
• 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, Mar. 2024, Peer-reviewed

  
• 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, Peer-reviewed

  
• 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, Peer-reviewed

  
• Numerical Behavior of Mixed Precision Iterative Refinement Using the BiCGSTAB Method

  Yingqi Zhao; Takeshi Fukaya; Takeshi Iwashita

  Journal of Information Processing, Dec. 2023, Peer-reviewed

  
• 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, Peer-reviewed, Lead author, Corresponding author

  
• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• A parallel algebraic multigrid solver for fast magnetic edge-element analyses

  T Mifune; T Iwashita; M Shimasaki

  IEEE TRANSACTIONS ON MAGNETICS, May 2005

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• Algebraic multicolor ordering for parallelized ICCG solver in finite-element analyses

  Takeshi Iwashita; Masaaki Shimasaki

  IEEE Transactions on Magnetics, Mar. 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

  
• Construction and ordering of edge elements for parallel computation

  T Iwashita; M Shimasaki

  IEEE TRANSACTIONS ON MAGNETICS, Sep. 2001

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• 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

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• 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

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• 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, Peer-reviewed

  

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

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  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

  
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  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 -

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  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

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  電気学会研究会資料. RM, 06 Mar. 2015

  
• Parallel Hierarchical Matrix Arithmetics using Dynamic Load Balancing

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  IPSJ SIG Notes, 23 Feb. 2015

  
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  応用数理学会 2015年度年会, 2015

  
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  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

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  電気学会研究会資料. RM, 26 Sep. 2014

  
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  電気学会研究会資料. RM, 25 Sep. 2014

  
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  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

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  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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• A fast solver for FEM analyses using the parallelized algebraic multigrid method

  T Mifune; T Iwashita; M Shimasaki

  IEEE TRANSACTIONS ON MAGNETICS, Mar. 2002

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• 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

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• 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

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• 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

  
• 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

  

Books and Other Publications

• スパコンを知る : その基礎から最新の動向まで

  岩下 武史; 片桐 孝洋; 高橋 大介

  東京大学出版会, 2015, Not refereed

  Find Kyoto University's collection of books :

  

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

  Kyoto University;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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23H00462/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K12063/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H03447/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K21782/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H05662/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H04122/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H01105/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18H03249/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17H01749/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26540052/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26289075/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26280044/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24300004/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23300006/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21680003/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21300007/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20300011/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560288/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18700045/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17560255/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16700060/
• 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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550265/
• 低ランク構造行列法の適用範囲拡大と多様な計算アーキテクチャの活用

  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. 2024, To 31 Mar. 2027, Granted

  低ランク近似;行列近似;数値線形代数;並列計算;混合精度演算

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24K02949/

Education

Teaching subject(s)

• From 01 Apr. 2024, To 31 Mar. 2025

  Computer organization

  9127, Fall, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Supercomputing, Advanced

  3541, Spring, Graduate School of Informatics, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Readings in Humanities and Social Sciences (All Faculties, English)-E1

  HA01, Fall, Institute for Liberal Arts and Sciences, 2

Administration

Faculty management (title, position)

• From 16 Sep. 2023, To 31 Mar. 2025

  学術情報メディアセンター　協議員会　協議員
• From 16 Sep. 2023, To 31 Mar. 2025

  学術情報メディアセンター　教員会議　委員
• From 01 Oct. 2023, To 31 Mar. 2026

  情報環境機構　研究用計算機専門委員会　委員
• From 01 Apr. 2024, To 31 Mar. 2026

  情報環境機構　情報セキュリティ委員会　委員
• From 01 Oct. 2023, To 31 Mar. 2025

  情報環境機構　スーパーコンピュータシステム運用委員会　委員長

Academic, Social Contribution

Committee Memberships

• From Jun. 2024, To Present

  委員長, HPCI連携サービス委員会
• From Nov. 2023, To Present

  客員教授, 北海道大学
• 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 Jun. 2024

  副委員長, HPCI連携サービス委員会
• From Apr. 2022, To Mar. 2024

  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 May 2024

  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