基于CUDA并行计算的大地电磁二维有限元数值模拟研究  

Simulation study of magnetotelluric 2D finite element numerical calculation based on CUDA parallel

作　　者：韩思旭 李勇[2] 陈卫营[3] 王显祥[3] 

机构地区：[1]广东省核工业地质局二九三大队,广州510800 [2]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [3]中国科学院地质与地球物理研究所,北京100029

出　　处：《地球物理学进展》2016年第3期1095-1102,共8页Progress in Geophysics

基　　金：中国科学院矿产资源研究重点实验室开放课题;国家自然科学基金项目(41174108;41504063)联合资助

摘　　要：大地电磁测深二维反演是现有MT数据处理解释的主流,而反演的速度依赖于正演的计算精度和速度.本文在简要介绍CUDA并行计算模型的基础上,对MT二维有限单元数值模拟进行了分析,采用基于CUDA并行技术和有限元数值模拟技术,实现了基于CUDA并行计算的大地电磁二维有限元数值模拟方法.通过一个三层模型的CDUA并行算法计算结果与解析解对比,及3个复杂模型的CDUA并行算法与CPU串行算法计算结果对比分析,结果表明,这种新的数值模拟方法在保证计算精度的同时能显著提高计算速度,加速比可达20多倍.2D inversion is the most popular way for the MT data processing and interpretation,whose computation speed is seriously depended on the speed and accuracy of forwarding. In order to improve forwarding process,a new technology named CUDA based on GPU parallel computation was proposed in this paper and applied to 2D MT forwarding. The computation results of a three layers model and a 2D model indicate that the computation speed was highly improved after using CUDA technology and the speed-up ratio may reach 20. The application of CUDA has a great significance in promoting the forwarding and inversion of AMT.

关 键 词：CUDA GPU MT 有限元 正演 

分 类 号：P631[天文地球—地质矿产勘探]