摘要
抛物线Radon变换被广泛应用于压制和去除叠前地震数据中的多次波。混合域抛物线Radon变换虽具有良好的多次波压制效果,但面对体量日益庞大的地震道集数据,仍需很长处理周期。为此,首先利用GPU对抛物线Radon变换算法做并行优化,将计算过程中最耗时的傅里叶变换和代数运算用CUDA库等优化技巧进行加速,加速比达13以上;然后基于CPU-GPU异构平台,提出一种CPU-GPU并行方案,充分利用计算机硬件资源,通过CPU多线程与多个GPU协同并行实现抛物线Radon变换并行算法,加速比约达30。
Parabolic Radon transform is widely used for suppressing and removing multiple waves in prestack seismic data.Although parabolic Radon transform in mixed domain can well suppress multiples,it still needs a long time when processing seismic gathers larger and larger.In this paper,first we use the GPU to optimize the parabolic Radon transform algorithm in parallel,and use the CUDA library and other optimizing techniques to accelerate the most time-consuming Fourier transform and algebraic operations to nearly 13 xspeedup over serial execution in the calculating process;then based on the CPU-GPU heterogeneous platform,we propose a CPU-GPU parallel scheme,which makes full use of computer hardware,to realize the parabolic Radon transform parallel algorithm through CPU multi-threading and multiple GPUs in parallel.The speedup can be nearly 30 xover serial execution.
作者
张全
林柏栎
杨勃
彭博
张伟
涂然
ZHANG Quan;LIN Baiyue;YANG Bo;PENG Bo;ZHANG Wei;TU Ran(School of Computer Science,Southwest PetroleumUniversity,Chengdu,Sichuan 610500,China;School of Information and Communication Engineering,University of Electronic Science and Technologyof China,Chengdu,Sichuan 611731,China;State Grid Chongqing Electric Power Research Institute,Chongqing,404100,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2020年第6期1263-1270,1163,共9页
Oil Geophysical Prospecting
基金
西南石油大学科研“启航计划”项目“医学超声模拟系统研究”(2018QHZ024)
国家电网重庆市电力公司电力科学研究院项目“变电站噪声全空间分布实时展示移动平台开发研究”(52202317001J)联合资助
