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基于我国超级计算机平台,开展了大规模并行时域有限差分法(Finite-Difference Time-Domain FDTD)的性能和应用研究。在我国首台百万亿次“魔方”超级计算机、具有国产CPU的“神威蓝光”超级计算机和当前排名世界第一的“天河二号”超级计算机上就并行FDTD方法的并行性能进行了测试,并分别突破了10000 CPU核,100000 CPU核和300000 CPU核的并行规模。在不同测试规模下,该算法的并行效率均达到了50%以上,表明了本文并行算法具有良好的可扩展性。通过仿真分析多个微带天线阵的辐射特性和某大型飞机的散射特性,表明本文方法可以在不同架构的超级计算机上对复杂电磁问题进行精确高效电磁仿真。
Based on China’s supercomputer platform, the performance and application of large-scale Finite-Difference Time-Domain FDTD are studied. In our country the first one trillion times “Rubik’s Cube ” supercomputer, with the domestic CPU “divinity Blu-ray ” supercomputer and the current ranking of the world “Tianhe 2 ” supercomputer on the parallel FDTD method The parallel performance was tested and exceeded the parallel scale of 10000 CPU core, 100000 CPU core and 300000 CPU core respectively. Under different test scales, the parallel efficiency of the algorithm has reached more than 50%, which shows that this parallel algorithm has good scalability. The simulation analysis of the radiation characteristics of multiple microstrip antenna arrays and the scattering characteristics of a large aircraft shows that the proposed method can accurately and efficiently simulate complex electromagnetic problems on supercomputers of different architectures.