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DTSTART;TZID=America/Denver:20231114T103000
DTEND;TZID=America/Denver:20231114T110000
UID:submissions.supercomputing.org_SC23_sess177_pap113@linklings.com
SUMMARY:69.7-PFlops Extreme Scale Earthquake Simulation with Crossing Mult
 i-Faults and Topography on Sunway
DESCRIPTION:Wubing Wan and Lin Gan (Tsinghua University, China; National S
 upercomputing Center in Wuxi); Wenqiang Wang (Southern University of Scien
 ce and Technology, China); Zekun Yin and Haodong Tian (Shandong University
 , China); Zhenguo Zhang (Southern University of Science and Technology, Ch
 ina); Yinuo Wang (Tsinghua University, China); Mengyuan Hua and Xiaohui Li
 u (Shandong University, China); Shengye Xiang and Zeyu Song (Tsinghua Univ
 ersity, China); Zhongqiu He and Zijia Wang (Southern University of Science
  and Technology, China); Ping Gao (Tsinghua University, China; National Su
 percomputing Center in Wuxi); Yaojian Chen (Tsinghua University, China); X
 iaohui Duan (Shandong University, China); Xin Liu (National Supercomputing
  Center in Wuxi); Wei Zhang (Southern University of Science and Technology
 , China); Haohuan Fu and Wei Xue (Tsinghua University, China); Weiguo Liu 
 (Shandong University, China); Guangwen Yang (Tsinghua University, China); 
 and Xiaofei Chen (Southern University of Science and Technology, China)\n\
 nA high-scalable and fully optimized earthquake model is presented based o
 n the latest Sunway supercomputer.  Contributions include: \n\n   1) the c
 urvilinear grid finite-difference method (CGFDM) and flexible model applyi
 ng perfectly matched layer (PML) and enabling more accurate and realistic 
 terrain descriptions; \n\n   2) a hybrid and non-uniform domain decomposit
 ion scheme that efficiently maps the model across different levels of the 
 computing system; and\n\n   3) sophisticated optimizations that largely al
 leviate or even eliminate bottlenecks in memory, communication, etc., obta
 ining a speedup of over 140x. \n\nCombining all innovations, the design fu
 lly exploits the hardware potential of all aspects and enables us to perfo
 rm the largest CGFDM-based earthquake simulation ever reported (69.7 PFlop
 s using over 39 million cores).  \n\nBased on our design, the Turkey earth
 quakes (February 6, 2023), and the Ridgecrest earthquake (July 4, 2019), a
 re successfully simulated with a maximum resolution of 12-m. Precise hazar
 d evaluations for the hazardous reduction of earthquake-stricken areas are
  also conducted.\n\nTag: Accelerators, Applications, Modeling and Simulati
 on\n\nRegistration Category: Tech Program Reg Pass\n\nAward Finalist: Best
  Paper Finalist, Best Student Paper Finalist\n\nReproducibility Badges: Ar
 tifact Available, Artifact Functional, Results Reproduced\n\nSession Chair
 : Sameh Abdulah (King Abdullah University of Science and Technology (KAUST
 ))\n\n
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