三维声波方程正演多级异构并行算法设计与实现

摘要

在石油勘探过程中，地震波正演为反演方法提供理论基础及理论数据，能测试反演方法的有效性，在整个反射地震学中占有很重要的地位。通过对三维声波方程正演算法的分析，结合某众核平台的特性，完成了该算法两级MPI并行＋众核级并行的设计，并进行了相关优化。实验结果表明，三维声波方程正演多级异构并行算法在该平台具有较好的众核并行加速效果和良好的MPI扩展性能。%Seismic wave forward provides theory basis and theoretical data for inversion method in the process of oil exploration,and can test the effectiveness of inversion method,it is very important to reflection seismology.In this paper,we complete the design of 2-level MPI parallel and multi-core thread parallel of 3D acoustic wave equation forward algorithm through analysing it and in combination with the characteristics of a multi-core platform,and make the correlated optimisation as well.Experimental results show that the multi-level heterogeneous parallel method of 3D acoustic wave equation forward has preferable multi-core parallel acceleration effect and good MPI scalable performance.