Program for Promoting Researches on the Supercomputer Fugaku: Large-scale numerical simulation of earthquake generation, wave propagation and soil amplification

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Program for Promoting Researches on the Supercomputer Fugaku:

Large-scale numerical simulation of earthquake generation, wave propagation and soil amplification

Reaserch Results

Research Results

FY2022 FY2021 FY2020
	Jan. 2022 Research from our project won the Best Paper Award and the Best Student Poster Award at HPC Asia 2022 (held on Jan. 12-14, 2022, online). The paper titled "152K-computer-node parallel scalable implicit solver for dynamic nonlinear earthquake simulation" which won the Best Paper Award, illustrated the development of a hybrid method of physics-based simulation and data-learning suitable for massively parallel computation, and conducted earthquake simulation with a super-detailed model using the full supercomputer Fugaku system. Here, the integration of artificial intelligence and conventional HPC, as well as the numerical analysis method that enabled the earthquake simulation reflecting detailed information from the earth's crust to the city, was highly evaluated. The poster titled "GPU-accelerated Multiphysics-based Seismic Wave Propagation Simulation and its Surrogate Model with Machine Learning" which won the Best Student Poster Award, presented the development of a capability/capacity computing method that enable multiple high-speed analysis of complex earthquake phenomena. Furthermore, a surrogate model was constructed using the analysis results and its effectiveness was confirmed in this poster. These awards were given in recognition of the high performance of the computer applications being developed in our project ("Application for Disaster Damage Prediction Related to Earthquakes"). HPCAsia2022 Awards at HPCAsia2022 R-CCS (in Japanese)
	Jan. 2022 The research on "Nonlinear earthquake simulation" conducted in our project has been accepted to HPC Asia 2022 (January 12-14, 2022, held online) and selected as the Best Paper Finalist. This paper will be presented titled "152K-computer-node parallel scalable implicit solver for dynamic nonlinear earthquake simulation" on January 12. "152K-computer-node parallel scalable implicit solver for dynamic nonlinear earthquake simulation" Tsuyoshi Ichimura, Kohei Fujita, Kentaro Koyama, Ryota Kusakabe, Yuma Kikuchi, Takane Hori, Muneo Hori, Lalith Maddegedara, Noriyuki Ohi, Tatsuo Nishiki, Hikaru Inoue, Kazuo Minami, Seiya Nishizawa, Miwako Tsuji, and Naonori Ueda. Details...
	Dec. 2021 On December 14, 2021, Associate Professor Kohei Fujita in Prof. Ichimura’s group will give a talk at a seminar held by the Academic Center for Computing and Media Studies, Kyoto University. Details... in Japanese
	Nov. 2021 Several presentations from our research will be given at the 16th Annual Meeting of the Japan Association for Earthquake Engineering (JAEE), which will be held fully online on November 30-December 1, 2021. Details... in Japanese
	Nov. 2021 Prof. Ichimura will give a talk entitled "GROUND AMPLIFICATION AND SEISMIC WAVE PROPAGATION SIMULATION ON UNSTRUCTURED LOW-ORDERED FINITE ELEMENT" at the 49th Symposium on Seismic Ground-Motion 2021 at the Architectural Institute of Japan on November 19. Details... in Japanese
	Nov. 2021 A paper on the research results of our project, presented by Prof. Ichimura and his research group, has been selected for the Honorable Mention at Eighth Workshop on Accelerator Programming using Directives (WACCPD 2021) held at ongoing SC21 (The International Conference for High Performance Computing, Networking, Storage and Analysis, Nov. 14-19, 2021). The paper is about convergence between AI and traditional HPC, which was of high interest among the SC and WACCPD communities. It is also introduced at "RIKEN at SC21" on the R-CCS website. GPU porting of scalable implicit solver with Green’s function based neural networks by OpenACC Kohei Fujita, Yuma Kikuchi, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara, Naonori Ueda Details...
	Oct. 2021 Prof. Tsuyoshi Ichimura will give a talk on the application development research in our project at "NVIDIA Fall HPC Weeks, Week-3 GPU Applications" on October 25. Details... in Japanese
	Sept. 2021 At 17WCEE (17th World Conference on Earthquake Engineering, Sept. 27 to Oct. 2, 2021), members of our project presented some of the research results of the project. Details...
	Sept. 2021 Prof. Tsuyoshi Ichimura introduced the study of earthquake disaster simulation using digital city in the MEGAQUAKE series of the NHK Special broadcast on September 12.
	July 2021 In the AP05-ACM Papers session of PASC21 (The Platform for Advanced Scientific Computing Conference), held on July 5-9, 2021, there will be a presentation titled "Fast Scalable Implicit Solver with Convergence of Equation-Based Modeling and Data-Driven Learning: Earthquake City Simulation on Low-Order Unstructured Finite Element" on July 8. Details...
	June 2021 A presentation on the results of this project will be given in the Session Six of the PEER Pacific Rim Forum, held on June 16, 2021. Details...
	May 2021 At JpGU Meeting 2021 (May 30 - June 6, 2021), a session entitled "Creating future of solid Earth science with high performance computing (HPC)" will be held on June 5, chaired by Project Leader Dr. Takane Hori and Dr. Ryoichiro Agata. Researchers who are applying HPC technology in forward simulations and inversion analyses will give presentations and we will discuss how to improve more the collaboration between computer & computational sciences and solid Earth science, including the use of the supercomputer Fugaku. Details...