摘要
为了模拟更详细真实的天气和气候变化,天气和气候模式正朝着更高分辨率和更多物理参数化方案的方向发展。基于神威新一代国产超级计算机,利用其异构众核体系结构的优势对基于非结构网格的天气-气候一体化模式(Global-to-Regional Integrated forecast System, GRIST)进行移植和优化,充分发挥申威处理器的性能。基于新一代神威的swGRIST在经过不断优化后,主核和从核协作运行时间加速比达到纯主核的2-4倍,热点函数最高可加速48倍以上,可扩展到100万核,对实时预报系统提升了保障。
To simulate more detailed and realistic weather and climate changes,weather and climate models are moving towards higher resolutions and more physically parameterized schemes.Based on the new generation of domes⁃tic supercomputers of Sunway,this paper uses the advantages of its heterogeneous many-core architecture to trans⁃plant and optimize the unstructured grid-based Global-to-Regional Integrated Forecast System(GRIST),fully giving full play to the performance of Sunway processor.Based on the new generation of Sunway swGRIST,after our continu⁃ous optimization,the acceleration ratio of the master core and the slave core's cooperative running time reaches 2-4 times that of the pure master core,and the hotspot function can be accelerated by more than 48 times,and can be ex⁃panded to 1 million cores.A real-time forecast system improves assurance.
作者
范国炜
吴涛
刘壮
FAN Guo-wei;WU Tao;LIU Zhuang(College of Computer,Chengdu University of Information Technology,Chengdu Sichuan610225,China;Department of Earth System Science,Tsinghua University,Beijing 100084,China)
出处
《计算机仿真》
北大核心
2023年第12期353-358,共6页
Computer Simulation
基金
国家重点研发计划(2019YFC1510003)
四川省重点研发项目(2021YFQ0056)。
关键词
申威架构
天气和气候模式
异构众核
并行计算
Sunway architecture
Weather and climate patterns
Heterogeneous many-core
Parallel computing
