IT House April 5 news, according to the university of science and technology of China official news, recently, the university of science and technology of China in the new generation of Shenwei supercomputer for the first time to achieve up to 7 days of global 3 km space resolution atmospheric physics-chemistry fully coupled numerical simulation test, comprehensively demonstrated the reliability, stability and availability of a new generation of domestic supercomputer software and hardware system, as well as the major application prospects of building a global high-resolution atmospheric simulation system on it.
According to reports, atmospheric numerical simulation is a key means to study and predict catastrophic weather events, but there is still a large forecast deviation. Atmospheric numerical models need to include many complex physical and chemical processes to reflect the significant impact of human activities and the high development of global urbanization on atmospheric systems.
Based on the new generation of domestic Shenwei supercomputing platform, the research work developed the global high-resolution non-static equilibrium atmospheric numerical model iAMAS, which includes the evolution process of atmospheric composition, and filled the gap in atmospheric numerical simulation at home and abroad in terms of large-scale data reading and writing speed, parallel computing efficiency, scale scalability, and runtime effectiveness.
In the end, when the scale of the numerical simulation test was expanded to nearly 40 million processor cores (about 600,000 core groups), the parallel efficiency remained at 76.2%, and the speed of simulation was achieved at 0.82 days per hour under the scenario of frequent large-scale data reading and writing, and the efficient numerical simulation test of 3 km atmospheric physico-chemical coupling was realized, reaching the international leading level.
IT House learned that the research results have been published in Science Bulletin, with Professor Zhao Chun and Professor An Hong as the co-corresponding authors of the paper, master's students Gu Jun and Fang Tao, and doctoral students Feng Jiawang and Hao Xiaoyu as co-first authors.
In the future, the research team plans to further optimize the atmospheric model, improve its computational efficiency and stability, and couple it into the high-resolution Earth system model, so that long-term high-resolution climate simulation experiments can be carried out to explore the laws of climate change and its impact on humans, and serve the country's "double carbon" strategy.