• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2013, Vol. 35 ›› Issue (3): 43-47.

• 论文 • 上一篇    下一篇

基于“天河一号”的并行电磁计算求解器

刘立国,莫锦军,袁乃昌   

  1. (国防科学技术大学电子科学与工程学院,湖南 长沙 410073)
  • 收稿日期:2011-05-16 修回日期:2011-08-20 出版日期:2013-03-25 发布日期:2013-03-25

Parallel electromagnetic calculation solver
based on Tianhe1A supercomputer

LIU Liguo,MO Jinjun,YUAN Naichang   

  1. (School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China)
  • Received:2011-05-16 Revised:2011-08-20 Online:2013-03-25 Published:2013-03-25

摘要:

阐述了基于“天河一号”超级计算机的并行电磁计算求解器。该求解器采用并行有限差分算法,并行有限差分算法是求解电大目标的有力工具,它具有天然并行的优点,能够充分利用集群的计算资源。“天河一号”是世界上最快的计算机之一,它提供了强大的计算资源,充分利用其丰富计算资源的电磁求解器在工程上有着迫切的需求。基于“天河一号”建立的电磁计算求解器,能够用以求解复杂、电大目标的电磁计算问题。在测试中利用7200个进程花费少于48小时解决的电磁问题在普通PC机上要花费几年甚至十几年的时间。通过定标体和复杂电大目标的案例测试,求解器的准确性、计算规模和并行效率都得到了验证。

关键词: 有限差分算法, 天河一号, 并行算法, 并行效率

Abstract:

The paper presents a parallel electromagnetic solver in Tianhe1A supercomputer. The solver adopts the parallel FDTD algorithm, which is a powerful tool for solving large electrical objects for its parallel nature. As one of the fastest supercomputers in the world, Tianhe1A can provide very high computational capability. An efficient parallel electromagnetic solver running on Tianhe1A is urgent for actual applications. We have developed a parallel Finite Difference Time Domain (FDTD) algorithm with high performance based on the Tianhe1A supercomputer. Our goal is to effectively solve the problems of complex structures and large electrical object. By using parallel computation, we are able to complete a calculation on 7200 processors in less than 48 hours, where a serial version would have taken over several decades. Accurateness, scalability and efficiency of the parallel simulator is examined in this paper.

Key words: FDTD;Tianhe1A supercomputer;parallel algorithm;parallel efficiency