%0 Journal Article
%T Forward modelling of elastic wave equation with coarse-grained parallel algorithm<br>弹性波方程正演的粗粒度并行算法
%A 何兵寿
%A 张会星
%A 韩令贺
%J 地球物理学进展
%D 2010
%I 
%X Wave equation forward modelling plays a significant role in seismic data acquisition, processing, interpretation and inversion. At present, however, forward modelling algorithms based on the seismic wave-equation are restrained in large-scale industrial application because of their massive computational cost. This article studies the basic methods for solving the 2D elastic wave-equation with finite difference and parallel algorithms, and gives the computation domain division method and communication scheme that are suitable for the parallel algorithm. Also, the article analyzes the difference of the computation time cost, the speedup ratio and efficiency of the parallel programs under different parameters. Numerical experiments realized the parallel solution of elastic wave-equation with Message Passing Interface (MPI), and show that the introduction of MPI greatly improves the computation efficiency.
%K seismic wave equation
%K forward modelling
%K finite difference
%K parallel computing
%K Message Passing Interface<br>地震波方程
%K 正演
%K 有限差分
%K 并行计算
%K 消息传递接口
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=65CE641AB2DEAAF8B2D39ECB6B6B6C80&aid=F91246494404A8A8718325372408A83D&yid=140ECF96957D60B2&vid=C5154311167311FE&iid=0B39A22176CE99FB&sid=7C13E30F5EDBE7AB&eid=46682C11199DA00C&journal_id=1004-2903&journal_name=地球物理学进展&referenced_num=1&reference_num=20