A Performance-Portable Kilometer-Scale Global Ocean Model on ORISE and New Sunway Heterogeneous Supercomputers

Ocean general circulation models (OGCMs) are indispensable for studying the multi-scale oceanic processes and climate change. High-resolution ocean simulations require immense computational power and thus become a challenge in climate science. We present LICOMK++, a performance-portable OGCM using K...

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Vydáno v:SC24: International Conference for High Performance Computing, Networking, Storage and Analysis s. 1 - 12
Hlavní autoři: Wei, Junlin, Han, Xiang, Yu, Jiangfeng, Jiang, Jinrong, Liu, Hailong, Lin, Pengfei, Yu, Maoxue, Xu, Kai, Zhao, Lian, Wang, Pengfei, Zheng, Weipeng, Xie, Jingwei, Zhou, Yanzhi, Zhang, Tao, Zhang, Feng, Zhang, Yehong, Yu, Yue, Wang, Yuzhu, Bai, Yidi, Li, Chen, Yu, Zipeng, Deng, Haoyu, Li, Yaxin, Chi, Xuebin
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 17.11.2024
Témata:
Climate change
Climatology
Computational modeling
Computer architecture
High performance computing
Meteorology
Ocean circulation
Ocean General Circulation Model
Performance-Portable
Program processors
Sunway Architecture
Supercomputers
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Shrnutí:Ocean general circulation models (OGCMs) are indispensable for studying the multi-scale oceanic processes and climate change. High-resolution ocean simulations require immense 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: (1) we enhance cuttingedge Kokkos with the Sunway architecture, enabling LICOMK++ to become the first performance-portable OGCM on diversified architectures, i.e., Sunway processors, CUDA/HIP-based GPUs, and ARM CPUs. (2) LICOMK++ overcomes the one simulated-years-per-day (SYPD) performance challenge for global realistic OGCM at 1-\mathrm{km} resolution. It records \mathbf{1. 0 5} and 1.70 SYPD with a parallel efficiency of 54.8% and 55.6% scaling on almost the entire new Sunway supercomputer and two-thirds of the ORISE supercomputer. (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.
DOI:10.1109/SC41406.2024.00009