Development of parallel higher order FE-BI code for efficient modeling of interior scattering from large cavity structures
Development of parallel higher order FE-BI code for efficient modeling of interior scattering from large cavity structures
复制标题
DOI：
10.1109/apmc.2009.5384247
复制
发表时间：
2009-12
期刊：
影响因子：
--
通讯作者：
Peng Liu;Chao‐Fu Wang
中科院分区：
文献类型：
--
作者：
Peng Liu;Chao‐Fu Wang
用高阶有限元-边界积分法(FEBI-HOE)模拟了具有复杂端面的三维空腔的内部散射。本文提出了一种对Febi-hoe代码进行细粒度并行化的方法，以减少执行时间，增强其模拟超大型空腔模型的能力。为了便于实现，我们只关注了该系列代码的计算密集点：1)有限元矩阵方程的正向法解和2)BI矩阵方程的LU分解解。这种并行化策略可以在不对其余代码进行重大修改的情况下提供良好的可伸缩性和工作负载平衡。为了验证并行性能，在不同的并行平台上模拟了不同尺寸的腔体模型。
A finite element-boundary integral method with higher-order element (FEBI-HOE) code has been developed at Temasek Laboratories @ NUS for modeling interior scattering from 3-D cavities with complex terminations. In this paper, we present a small-grained parallelization of the FEBI-HOE code to decrease the execution time and to enhance its capability in simulating very large cavity models. To make implementation simpler, we only focus on the computationally intensive spots of the serial code: 1) frontal method solution of the FE elemental matrix equation and 2) LU factorization solution of the BI matrix equation. This strategy of parallelization can provide good scalability and working load balance without significant modifications of the rest of the code. To demonstrate the parallel performance, cavity models of different size have been simulated on different parallel platforms.