基于多核的地震数据相干体并行算法  

Coherence Parallel Algorithm of Seismic Data Processing Based on Multi-core

作　　者：杨尚琴[1] 庞锐[1] 魏嘉[1] 岳承祺[1] 庞世明[1] 朱凌燕[1] 

机构地区：[1]中国石油化工股份有限公司石油物探技术研究院,南京210014

出　　处：《高性能计算技术》2012年第2期31-35,共5页

摘　　要：在地震资料解释过程中，利用相干体算法能有效地识别断层和地层特征，然而随着物探技术的不断发展，地震数据规模日益庞大，串行算法的计算速度已经不能满足计算需求。利用多核多线程技术，必能提高相干体计算速度。本文在研究多核并行技术的基础上，完成了并行相干体算法的设计与实现，并分别对串行和并行算法进行性能比较测试。测试结果表明：OpenMP这种多线程技术充分利用了多核资源，取得了比较理想的线性加速比，提高了系统的计算效率，非常适合于大数据量地震数据处理的应用。In seismic exporlation interpretation, the coherent technology of seismic data can effectively identify faults and stratigraphy. However, with the continuous development of geophysical prospecting, the scale of seismic data becomes increasingly huge and the computing speed of serial algorithm can＇t meet the computing need. So using multi-threading technology will be able to improve computing speed of coherent cube. In this paper, a coherence parallel algorithm has been designed and implemented based on the study of multi-core parallel technology. The comparison test of the performance between the serial and the parallel algorithm has been completed. The result shows that using OpenMP can make full use of multi-core resources and achieve an ideal linear speedup. The result also indicates that using OpenMP can improve the computational efficiency of the system and be very suitable for processing large-scale seismic data.

关 键 词：OPENMP 相干体 多核 多线程技术 地震数据处理 并行计算 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]