69.7-PFLOPS Extreme Scale Earthquake Simulation with Crossing Multi-faults and Topography on Sunway

Wubing Wan1; Lin Gan1; Wenqiang Wang2; Zekun Yin3; Haodong Tian3; Zhenguo Zhang2; Yinuo Wang1; Mengyuan Hua3; Xiaohui Liu3; Shengye Xiang1; Zhongqiu He2; Zijia Wang2; Ping Gao1; Xiaohui Duan3; Weiguo Liu3; Wei Xue1; Haohuan Fu1; Guangwen Yang1; Xiaofei Chen2; Zeyu Song1; Yaojian Chen1; Xin Liu4; Wei Zhang2

10.1145/3581784.3613209

2023-11-17

2167-4329

979-8-3503-7663-0

SC23: International Conference for High Performance Computing, Networking, Storage and Analysis

11-17 Nov. 2023

Denver, CO, USA

A high-scalable and fully optimized earthquake model is presented based on the latest Sunway supercomputer. Contributions include: 1) the curvilinear grid finite-difference method (CGFDM) and flexible model applying perfectly matched layer (PML) and enabling more accurate and realistic terrain descriptions; 2) a hybrid and non-uniform domain decomposition scheme that efficiently maps the model across different levels of the computing system; and 3) sophisticated optimizations that largely alleviate or even eliminate bottlenecks in memory, communication, etc., obtaining a speedup of over 140×. Combining all innovations, the design fully exploits the hardware potential of all aspects and enables us to perform the largest CGFDM-based earthquake simulation ever reported (69.7 PFlops using over 39 million cores). Based on our design, the Turkey earthquakes (February 6, 2023), and the Ridgecrest earthquake (July 4, 2019), are successfully simulated with a maximum resolution of 12-m. Precise hazard evaluations for the hazardous reduction of earthquake-stricken areas are also conducted.

其他

1.Tsinghua University, China
2.Southern University of Science and Technology, China
3.Shandong University, China
4.National Supercomputing Center in Wuxi, China

Wubing Wan,Lin Gan,Wenqiang Wang,et al. 69.7-PFLOPS Extreme Scale Earthquake Simulation with Crossing Multi-faults and Topography on Sunway[C],2023.