Rchr
J-GLOBAL ID：201901011675825138   Update date: Nov. 05, 2024

Fujita Kohei

フジタ コウヘイ | Fujita Kohei
Affiliation and department：
The University of Tokyo Earthquake Research Institute

About The University of Tokyo Earthquake Research Institute


Job title： Associate Professor
Homepage URL  (1)： http://www.eri.u-tokyo.ac.jp/cshpc/fujita.html
Research field  (3)： High-performance computing ,  Structural and seismic engineering ,  Solid earth science
Research theme for competitive and other funds  (6)：
  • 2022 - 2025 ランダムアクセス・データレカレンスを含むカーネルの多種計算機における高速化
  • 2018 - 2023 Development of crust imaging enhanced by hetero-computing for reducing earthquake disaster
  • 2022 - BDEC完全解析の創出~社会基盤を例に
  • 2017 - 2020 Development of coupled ground-city seismic response analysis method
  • 2015 - 2017 Development of three-dimensional ground-underground structure analysis method for evaluating ground motion amplification
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Papers (96)：
  • Kai Nakao, Tsuyoshi Ichimura, Kohei Fujita, Takane Hori, Tomokazu Kobayashi, Hiroshi Munekane. Massively parallel Bayesian estimation with Sequential Monte Carlo sampling for simultaneous estimation of earthquake fault geometry and slip distribution. Journal of Computational Science. 2024. 81. 102372-102372
  • Lionel Quaranta, Lalith Maddegedara, Aitaro Kato, Muneo Hori, Tsuyoshi Ichimura, Kohei Fujita, Elia Nicolin. Large Scale Simulation of 3D Fault Rupture Subjected to Far-Field Loading With PDS-FEM: Application to the 2018 Palu Earthquake. Journal of Geophysical Research: Solid Earth. 2024. 129. 9
  • Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Maddegedara Lalith. Low-Ordered Orthogonal Voxel Finite Element with INT8 Tensor Cores for GPU-Based Explicit Elastic Wave Propagation Analysis. Lecture Notes in Computer Science. 2024. 257-271
  • Tsuyoshi Ichimura, Kohei Fujita, Ryota Kusakabe, Hiroyuki Fujiwara, Muneo Hori, Maddegedara Lalith. Development of an Estimation Method for the Seismic Motion Reproducibility of a Three-Dimensional Ground Structure Model by Combining Surface-Observed Seismic Motion and Three-Dimensional Seismic Motion Analysis. Lecture Notes in Computer Science. 2024. 272-287
  • Akinori Hashima, Takane Hori, Takeshi Iinuma, Sota Murakami, Kohei Fujita, Tsuyoshi Ichimura. Stress change in southwest Japan due to the 1944-1946 Nankai megathrust rupture sequence based on a 3-D heterogeneous rheological model. Earth, Planets and Space. 2024
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MISC (30)：
  • 日下部 亮太, 市村 強, 藤田 航平, 堀 宗朗, Lalith Wijerathne. メニーコアCPU及びGPUを使用した有限要素法による大規模3次元地盤液状化解析とそのサロゲートモデル-Fast and Large-scale Three-dimensional Soil Liquefaction Simulation with Finite Element Method Using Many-core CPUs and GPUs and Its Surrogate Model. 計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編. 2022. 27. 1057-1059
  • 藤田航平, 市村強, 堀宗朗, MADDEGEDARA Lalith. Development of fast and scalable finite-element solver for high-fidelity three-dimensional urban earthquake simulation. 計算工学講演会論文集(CD-ROM). 2022. 27
  • 澤田昌孝, 羽場一基, 藤田航平, 市村強, 堀宗朗. Multiscale FEM for evaluation of fault displacement and seismic vibration. 土木学会全国大会年次学術講演会(Web). 2022. 77th
  • 日下部 亮太, 市村 強, 藤田 航平, 山口 拓真, 堀 宗朗, Lalith Wijerathne. OpenACCを使ったGPU計算による大規模3次元液状化解析の高速化-Large-scale 3D soil liquefaction analysis accelerated by GPU computing with OpenACC. 計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編. 2020. 25. 4p
  • 日下部亮太, 市村強, 藤田航平, 堀宗朗, WIJERATHNE Lalith. CPU環境での大規模3次元地震応答解析の高度化. 土木学会年次学術講演会講演概要集(CD-ROM). 2020. 75th
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Lectures and oral presentations  (91)：
  • 液状化を伴う地震応答解析における時間刻みに関する数値計算の安定化の検討
    (第44回地震工学研究発表会 2024)
  • DEVELOPMENT OF HPC-ENHANCED 3D WAVE PROPAGATION SIMULATION METHOD AND ITS APPLICATION TO SUBSURFACE STRUCTURE ESTIMATION
    (2024)
  • 斜面安定解析のためのstress iso-surfaceの可視化に関する基礎検討
    (第44回地震工学研究発表会 2024)
  • Reflective Hamiltonian Monte Carloを用いた複雑な断層すべりのベイズ推定
    (第44回地震工学研究発表会 2024)
  • モデル構築方法の相違に着目した三次元地盤震動解析による地盤ひずみの比較
    (第59回地盤工学研究発表会 2024)
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Education (4)：
  • 2012 - 2014 The University of Tokyo The Graduate School of Engineering Department of Civil Engineering (Doctor Degree Course)
  • 2010 - 2012 The University of Tokyo The Graduate School of Engineering Department of Civil Engineering (Master Degree Course)
  • 2008 - 2010 The University of Tokyo The Faculty of Engineering Department of Civil Engineering
  • 2006 - 2008 The University of Tokyo College of Arts and Sciences (Natural Sciences II)
Professional career (1)：
  • Dr. (Eng.) (The University of Tokyo)
Work history (6)：
  • 2021/01 - 現在 The University of Tokyo Earthquake Research Institute Associate Professor
  • 2017/04 - 現在 RIKEN Center for Computational Science Visiting Scientist
  • 2017/04 - 2021/01 The University of Tokyo Earthquake Research Institute Assistant Professor
  • 2015/04 - 2017/03 RIKEN Advanced Institute for Computational Science Postdoctoral Researcher
  • 2014/04 - 2015/03 RIKEN Advanced Institute for Computational Science Visiting Researcher (Postdoctoral Research Fellow of JSPS)
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Committee career (8)：
  • 2020/07 - 現在 The Japan Society for Computational Engineering and Science International Activities Committee
  • 2017/08 - 現在 International Workshop on Advances in High-Performance Computational Earth Sciences: Applications & Frameworks (IHPCES) Co-chair
  • 2019/09 - 2023/05 Japan Society of Civil Engineers Applied Mechanics Committee
  • 2022/01 - 2022/12 日本地震工学会 日本地震工学会・大会-2022 実行委員
  • 2021/01 - 2021/12 日本地震工学会 日本地震工学会・大会-2021 実行委員
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Awards (20)：
  • 2022/12 - 日本地震工学会 2022年度日本地震工学会大会優秀発表賞 高詳細三次元地盤震動解析手法の開発と,地盤歪のボリュームデータ可視化に関する基礎検討
  • 2022/11 - ACM/IEEE Gordon Bell Prize finalist (SC22) Extreme-scale earthquake simulation with uncertainty quantification
  • 2022/01 - HPCAsia2022: International Conference on High Performance Computing in Asia-Pacific Region Best Paper Award 152K-computer-node parallel scalable implicit solver for dynamic nonlinear earthquake simulation
  • 2021/12 - 日本地震工学会 2021年度日本地震工学会大会優秀発表賞 高速な3次元地盤震動解析手法の開発と地盤歪推定への適用
  • 2021/11 - Eighth Workshop on Accelerator Programming Using Directives (WACCPD) Honorable Mention GPU porting of scalable implicit solver with Green’s function-based neural networks by OpenACC
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Association Membership(s) (5)：
IEEE (Institute of Electrical and Electronics Engineers) ,  ACM (Association for Computing Machinery) ,  Japan Association for Earthquake Engineering ,  The Japan Society for Computational Engineering and Science ,  Japan Society of Civil Engineers
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