物探化探计算技术2016，Vol.38Issue(3)：289-296,8.DOI:10.3969/j.issn.1001-1749.2016.03.01
MP I并行的节点大地电磁三维有限元正演
Three dimensional modeling of magnetotelluric data using finite element method and MPI parallel computation
摘要
Abstract
This paper deals with the forward modeling of three-dimensional (3D)magnetotelluric problem by using the fi-nite element method with fortran language.The validity of this FEM approach is investigated and confirmed by comparing mod-eling results with a layered medium model,a 2D prism model and a 3D model.The bi-conjugate gradient method is applied in solving the governed equations,which reduced the dimensions of the linear system under the first boundary condition.In addi-tion,the memory requirement is reduced obviously in which only nonzero elements stored.The solution of the linear system is obtained by using a massive parallel program based on MPI between frequencies which massively reduced the computing time. A 3D model has been calculated,and the speed-up ratio is up to 2.328 when 4 processes used.关键词
大地电磁/三维/正演/并行/MPIKey words
magnetotelluric/three-dimensional/modeling/parallel programing/MPI分类
天文与地球科学引用本文复制引用
马驹,肖调杰,王赟..MP I并行的节点大地电磁三维有限元正演[J].物探化探计算技术,2016,38(3):289-296,8.基金项目
国家科技973项目(2014CB440905) （2014CB440905）
国家重点实验室“十二五”项目群(SKLODG-ZY125-01) （SKLODG-ZY125-01）
