【摘要】 应用GPU通用高性能编程技术实现一种加速地震叠前时间偏移的新方法。该技术是地震勘探处理的常规流程,其核心算法具有计算密集、数据独立性强、并行性高等特点。通过性能剖析获得其计算热点,通过CUDA技术对其进行并行化改造,并利用CUDA的流技术实现CPU到GPU的异步传输。通过集群环境下的性能测试,应用GPU并行化的PSTM程序可明显缩短运行时间。更多还原

【Abstract】 A novel method of accelerating Pre-stack Time Migration(PSTM) by applying high-performance general-purpose GPU programming techniques is presented.PSTM is the key technology for seismic information processing.The algorithm is computing intensive,data independent with high parallelism.In this paper,we profile the algorithm,estimate the hotspot and parallelize the key function by adopting CUDA programming technology.更多还原