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DTSTAMP:20260924T172458Z
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DTSTART;TZID=America/New_York:20241119T143000
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UID:submissions.supercomputing.org_SC24_sess460_gbv102@linklings.com
SUMMARY:A Performance-Portable Kilometer-Scale Global Ocean Model on ORISE
  and New Sunway Heterogeneous Supercomputers
DESCRIPTION:Junlin Wei and Xiang Han (Computer Network Information Center,
  Chinese Academy of Sciences); Jiangfeng Yu (Institute of Atmospheric Phys
 ics, Chinese Academy of Sciences); Jinrong Jiang (Computer Network Informa
 tion Center, Chinese Academy of Sciences); Hailong Liu (Laoshan Laboratory
 , Qingdao, China); Pengfei Lin (Institute of Atmospheric Physics, Chinese 
 Academy of Sciences); Maoxue Yu and Kai Xu (Laoshan Laboratory, Qingdao, C
 hina); Lian Zhao (Computer Network Information Center, Chinese Academy of 
 Sciences); Pengfei Wang, Weipeng Zheng, Jingwei Xie, Yanzhi Zhou, and Tao 
 Zhang (Institute of Atmospheric Physics, Chinese Academy of Sciences); Fen
 g Zhang (Computer Network Information Center, Chinese Academy of Sciences)
 ; Yehong Zhang and Yue Yu (Peng Cheng Laboratory, Shenzhen, China); Yuzhu 
 Wang (China University of Geosciences School of Information Engineering); 
 Yidi Bai and Chen Li (Computer Network Information Center, Chinese Academy
  of Sciences); Zipeng Yu (Institute of Atmospheric Physics, Chinese Academ
 y of Sciences); and Haoyu Deng, Yaxin Li, and Xuebin Chi (Computer Network
  Information Center, Chinese Academy of Sciences)\n\nOcean general circula
 tion models (OGCMs) are indispensable for studying multi-scale oceanic pro
 cesses and climate change. High-resolution ocean simulations require immen
 se computational power and thus become a challenge in climate science. We 
 present LICOMK++, a performance-portable OGCM using Kokkos, to facilitate 
 global kilometer-scale ocean simulations. The breakthroughs include: \n\n(
 1) We enhance cutting-edge Kokkos with the Sunway architecture, enabling L
 ICOMK++ to become the first performance-portable OGCM on diversified archi
 tectures, i.e., Sunway processors, CUDA/HIP-based GPUs, and ARM CPUs. \n\n
 (2) LICOMK++ overcomes the one simulated-years-per-day (SYPD) performance 
 challenge for global realistic OGCM at 1-km resolution. It records 1.05 an
 d 1.70 SYPD with a parallel efficiency of 54.8% and 55.6% scaling on almos
 t the entire new Sunway supercomputer and two-thirds of the ORISE supercom
 puter. \n\n(3) LICOMK++ is the first global 1-km-resolution realistic OGCM
  to generate scientific results. It successfully reproduces mesoscale and 
 submesoscale structures that have considerable climate effects.\n\nRegistr
 ation Category: Tech Program Reg Pass\n\nSession Chair: John Taylor (The A
 ustralian National University)\n\n
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