基于“天河一号”的并行电磁计算求解器  

Parallel electromagnetic calculation solver based on Tianhe-1A supercomputer

作　　者：刘立国[1] 莫锦军[1] 袁乃昌[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《计算机工程与科学》2013年第3期43-47,共5页Computer Engineering & Science

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。The paper presents a parallel electromagnetic solver in Tianhe-lA 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-lA can provide very high computational capability. An efficient parallel electromagnetic solver running on Tianhe-lA is ur- gent for actual applications. We have developed a parallel Finite Difference Time Domain （FDTD） algo- rithm with high performance based on the Tianhe-lA 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.

关 键 词：有限差分算法 天河一号 并行算法 并行效率 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]