Community Tsunami Inundation Forecast using Next Generation Co-processor

• Project/Area Number: 16K12845
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Tohoku University
• Principal Investigator: Koshimura Shunichi 東北大学, 災害科学国際研究所, 教授 (50360847)
• Research Collaborator: Musa Akihiro
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: シミュレーション / 高性能計算 / 広域被害把握 / 津波予報 / 数値シミュレーション / 格子ボルツマン法 / 自然災害 / シミュレーション工学 / 防災

Outline of Final Research Achievements

Using a next-generation co-processor, we aim to develop a community tsunami inundation forecast system to be implemented in a community-level tsunami disaster response. To achieve tha goal, the research team conducted a research to optimize a tsunami inundation model running on a new computational platforms, to clarify the required computational resources, quality of the simulation, potential hardware configurations. As a result, we found that the TUNAMI code (Tohoku University's tsunami inundation simulation code) can be efficiently optimized on a new vector processor called SX-AuroraTSUBASA. It achieved a performance to execute the 6-hour inundation forecast with 10 m resolution in about 4 minutes using 256 cores. This research achievement leads to construct a community-based tsunami inundation forecast system for the end-users such as local municipality.

Academic Significance and Societal Importance of the Research Achievements

本研究成果の最大の意義は，高精度リアルタイム津波浸水予測を，安価な次世代プロセッサを用いることで実行可能にし，さらに大学等での大規模なスーパーコンピュータと同等以上のパフォーマンスを達成できたことである．これにより，自治体などコミュニティでの自立的・分散的な運用が可能なリアルタイム津波浸水・被害予測システムを構築することが可能になった．さらには，我が国だけでなく，津波リスクの高い諸外国への展開が可能になったことが重要な成果である．

Research Products

• [Journal Article] Development and Validation of a Tsunami Numerical Model with the Polygonally Nested Grid System and its MPI-Parallelization for Real-Time Tsunami Inundation Forecast on a Regional Scale (2019)
  • Author(s): Inoue Takuya、Abe Takashi、Koshimura Shunichi、Musa Akihiro、Murashima Yoichi、Kobayashi Hiroaki
  • Journal Title: Journal of Disaster Research Volume: 14 Issue: 3 Pages: 416-434
  • DOI: 10.20965/jdr.2019.p0416
  • NAID: 130007626686
  • ISSN: 1881-2473, 1883-8030
  • Year and Date: 2019-03-28
  • Peer Reviewed / Open Access
• [Journal Article] A Real-Time Tsunami Inundation Forecast System Using Vector Supercomputer SX-ACE (2018)
  • Author(s): Akihiro Musa, Takashi Abe, Takuya Inoue, Hiroaki Hokari, Yoichi Murashima, Yoshiyuki Kido, Susumu Date, Shinji Shimojo, Shunichi Koshimura, Hiroaki Kobayashi
  • Journal Title: Journal of Disaster Research Volume: 13 Issue: 2 Pages: 234-244
  • DOI: 10.20965/jdr.2018.p0234
  • NAID: 130007494026
  • ISSN: 1881-2473, 1883-8030
  • Year and Date: 2018-03-20
  • Peer Reviewed / Open Access
• [Journal Article] Real-time tsunami inundation forecast system for tsunami disaster prevention and mitigation (2018)
  • Author(s): Musa Akihiro、Watanabe Osamu、Matsuoka Hiroshi、Hokari Hiroaki、Inoue Takuya、Murashima Yoichi、Ohta Yusaku、Hino Ryota、Koshimura Shunichi、Kobayashi Hiroaki
  • Journal Title: The Journal of Supercomputing Volume: 74 Issue: 7 Pages: 3093-3113
  • DOI: 10.1007/s11227-018-2363-0
  • Peer Reviewed / Open Access
• [Journal Article] A VERIFICATION OF THE 2D-3D HYBRID TSUNAMI SIMULATION MODEL CONSIDERING THE WEAK-COMPRESSIBILITY OF THE MRT-LBM (2018)
  • Author(s): 佐藤兼太，越村俊一
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 74 Issue: 2 Pages: I_175-I_180
  • DOI: 10.2208/kaigan.74.I_175
  • NAID: 130007504052
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed
• [Journal Article] A LATTICE BOLTZMANN APPROACH FOR THREE-DIMENSIONAL TSUNAMI SIMULATION BASED ON THE PLIC-VOF METHOD (2018)
  • Author(s): Sato Kenta、Koshimura Shunichi
  • Journal Title: Coastal Engineering Proceedings Volume: 1 Issue: 36 Pages: 90-90
  • DOI: 10.9753/icce.v36.papers.90
• [Journal Article] PLIC-VOF法を用いた格子ボルツマン法の津波数値解析に向けた基礎検証 (2017)
  • Author(s): 佐藤 兼太，越村 俊一
  • Journal Title: 土木学会論文集B2(海岸工学) Volume: 73
  • NAID: 130006171950
  • Peer Reviewed
• [Journal Article] 外力項に着目した格子ボルツマン法による津波数値計算の高精度化に関する研究 (2016)
  • Author(s): 佐藤 兼太, Bruno ADRIANO, 越村 俊一
  • Journal Title: 土木学会論文集B3(海洋開発) Volume: 72
  • NAID: 130005263220
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 多緩和時間モデルを用いた格子ボルツマン法による自由表面流れ解析の高精度化 (2016)
  • Author(s): 佐藤 兼太, 越村 俊一
  • Journal Title: 土木学会論文集B2(海岸工学) Volume: 72
  • NAID: 130005282314
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Tsunami Inundation and Damage Forecasting with High-Performance Computing Infrastructure (2018)
  • Author(s): Shunichi Koshimura, Yoichi Murashima, Akihiro Musa, Ryota Hino, Yusaku Ohta, Hiroaki Kobayashi, Masaaki Kachi, Yoshihiko Sato
  • Organizer: U.S. National Conference on Earthquake Engineering
  • Int'l Joint Research
• [Presentation] Paradigm shift of Japan’s tsunami disaster management for enhancing disaster resilience (2018)
  • Author(s): Shunichi Koshimura
  • Organizer: 12th International Symposium on Disaster Risk Management
  • Int'l Joint Research / Invited
• [Presentation] Rest-Time Tsunami Inundation Forecast (2018)
  • Author(s): Shunichi Koshimura
  • Organizer: Understanding Risk Forum
  • Int'l Joint Research / Invited
• [Presentation] Advances of Tsunami Inundation Forecasting and its Future Perspectives (2017)
  • Author(s): Shunichi Koshimura, Ryota Hino, Yusaku Ohta, Hiroaki Kobayashi, Yoichi Murashima, Akihiro Musa
  • Organizer: Oceans' 17
  • Int'l Joint Research
• [Presentation] Rapid tsunami inundation and damage forecasting with precise tsunami source model with GNSS data (2017)
  • Author(s): Shunichi Koshimura, Ryota Hino, Yusaku Ohta, Hiroaki Kobayashi, Yoichi Murashima, Akihiro Musa
  • Organizer: GNSS Tsunami Early Warning System Workshop
  • Int'l Joint Research / Invited
• [Presentation] Rapid Tsunami Inundation and Damage Estimation with High-Performance Computing and Networking (2017)
  • Author(s): Shunichi Koshimura, Yoichi Murashima, Ryota Hino, Yusaku Ohta, Hiroaki Kobayashi, Masaaki Kachi and Yoshihiko Sato
  • Organizer: International Tsunami Symposium
  • Int'l Joint Research
• [Presentation] 広域災害の把握と評価 (2016)
  • Author(s): 越村俊一
  • Organizer: 土木学会水工学夏期研修会
  • Place of Presentation: 秋田大学（秋田県秋田市）
  • Year and Date: 2016-08-22
  • Invited