A Highly Effective Global Surface Wave Numerical Simulation with Ultra-High Resolution
A Highly Effective Global Surface Wave Numerical Simulation with Ultra-High Resolution
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DOI：
10.1109/sc.2016.4
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发表时间：
2016-11
期刊：
影响因子：
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通讯作者：
F. Qiao;Wei Zhao;Xunqiang Yin;Xiaomeng Huang;Xin Liu;Qi Shu;Guansuo Wang;Zhenya Song;Xinfang Li
中科院分区：
文献类型：
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作者：
F. Qiao;Wei Zhao;Xunqiang Yin;Xiaomeng Huang;Xin Liu;Qi Shu;Guansuo Wang;Zhenya Song;Xinfang Li
表面波是海洋中最具活力的运动形式，对于航行安全和气候变化至关重要。高分辨率全球波浪模型在面波准确预报中发挥着关键作用。然而，由于对大计算量的高需求以及低并行效率障碍，业务预测系统仍然不具备高分辨率。这里的突破包括不规则准矩形域分解、主从协同计算工作流程和流水线方案的设计和应用，应用于全球波浪模型，该模型已应用于多个业务预报系统和地球系统模型。我们在神威·太湖之光超级计算机上进行的真实表面波模拟表明，我们的模型具有出色的可扩展性，使用具有10,649,600核的全尺寸超级计算机，在（1/100）°的超高分辨率下实现了45.43 PFlops。这为准确的面波预报和气候变化预测提供了高效的解决方案。
Surface wave is the most energetic form of motions in the ocean and is crucially important to navigation safety and climate change. High-resolution global wave model plays a key role in accurate surface wave forecasting. However, operational forecasting systems are still not in high-resolution due to entailed high demand for large computation, as well as low parallel efficiency barrier. Here breakthroughs encompassing the design and application of irregular quasi-rectangular domain decomposition, master-slave cooperative computing workflow and pipelining scheme were applied to a global wave model, which has been used in several operational forecasting systems and earth system models. Our realistic surface wave simulations on Sunway TaihuLight Supercomputer demonstrated that our model had outstanding scalability and achieved 45.43 PFlops in ultra-high resolution of (1/100)°, using full-scale supercomputer with 10,649,600 cores. That provides a highly effective solution for accurate surface wave forecasting and climate change prediction.