A Parallel 3-D HIE-FDTD Method using the MPI Library

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI:10.13052/2023.aces.j.381103

Qin Nan, Chunhui Mou, Juan Chen

引用次数: 0

Abstract

This paper presents the implementation of the parallel hybrid implicit-explicit finite-difference time-domain (HIE-FDTD) method using the Message Passing Interface (MPI) library. The method proves to be very effective in simulating large-scale three-dimensional electromagnetic problems with fine structures in one direction. For the decomposition of the computational volume in the HIE-FDTD method, an MPI Cartesian 2D topology is implemented, allowing arbitrary division of the volume in two directions. Derived data types provided in the MPI library are employed to optimize inter-process communication. High accuracy and efficiency are subsequently demonstrated through a numerical example of a frequency-selected surface (FSS). It shows that the proposed method is very suitable for parallel computing, and the parallel efficiency maintains above 80% for different numbers of processes.

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使用 MPI 库的并行三维 HIE-FDTD 方法

本文介绍了利用消息传递接口（MPI）库实现的并行隐式-显式混合有限差分时域（HIE-FDTD）方法。事实证明，该方法在模拟具有单向精细结构的大规模三维电磁问题时非常有效。对于 HIE-FDTD 方法中计算体积的分解，采用了 MPI 笛卡尔二维拓扑结构，允许在两个方向上任意划分体积。MPI 库中提供的派生数据类型用于优化进程间通信。随后，通过频率选择表面（FSS）的数值示例演示了高精度和高效率。结果表明，所提出的方法非常适合并行计算，而且在不同进程数量下的并行效率都保持在 80% 以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The Applied Computational Electromagnetics Society Journal (ACES)

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