基于OpenMP一维CSAMT正演并行计算研究  

A study on CSAMT 1D forward parallel computation based on openMP

作　　者：黄浩[1] 欧东新[1] 

机构地区：[1]桂林理工大学地球科学学院,广西桂林541006

出　　处：《矿产与地质》2017年第1期138-142,共5页Mineral Resources and Geology

基　　金：广西自然科学基金项目"三维直流电阻率;激电测深有限单元法区域分解并行计算"(编号:2015GXNSFAA139241)资助

摘　　要：电偶极子场源在水平层状介质中传播的电磁场的数值解是通过求解含有零阶和一阶贝塞尔函数的积分(汉克尔变换)所得,可控源音频大地电磁法(CSAMT)一维正演计算就是计算各个频率的视电阻率,使用传统串行方式对频点逐一计算,速度相对较慢。本文旨在使用Intel Visual Fortran 2013和VS2012软件,编写基于OpenMP的CSAMT一维正演并行计算程序。与一维CSAMT串行程序的对比:相同的计算量下,并行程序运行时间少于串行运行时间,计算量越大并行加速比越明显;验证了并行程序的可行性,为CSAMT多维复杂模型正演计算提供了并行研究基础。The numerical solution of electromagnetic field propagatedin horizontal layered medium from electric dipole source is presented through calculating Bessel function integral （Hankel Transformation） which containsthe zeroth order and first order. The Controlled Source Audio-Frequency MagnetotelluricMethod （CSAMT） 1D forward modelingis tantamount to calculate the apparent resistivity of each frequency,instead of the traditional serial computing which is relatively slow. This paper tried to build a CSAMT one-dimen sional forward parallel computing program based on OpenMP by using Intel Visual Fortran 2013 and VS2012. In comparison with the 1D CAMAT serial program： under the same amount of calculation, the running time of the parallel program is less than that of the serial program;the larger the amount of calculation is,the faster the speed-up ratio of parallel computing becomes. Moreover,the feasibility of the parallel program is also proved, and it providesthe study basis for CSAMT multidimensional complex model forward computation.

关 键 词：OPENMP 可控源音频大地电磁法(CSAMT) 一维正演 并行计算程序 

分 类 号：P631[天文地球—地质矿产勘探]