| 基于CUDA的Kirchhoff叠前时间偏移算法设计与实现* |
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| 引用本文： | 李肯立,彭俊杰,周仕勇. 基于CUDA的Kirchhoff叠前时间偏移算法设计与实现*[J]. 计算机应用研究, 2009, 26(12): 4474-4477. DOI: 10.3969/j.issn.1001-3695.2009.12.020 |
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| 作者姓名： | 李肯立 彭俊杰 周仕勇 |
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| 作者单位： | 1. 湖南大学,计算机与通信学院,长沙,410082
2. 北京大学,地球与空间科学学院,北京,100871 |
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| 基金项目： | 国家自然科学基金重大资助项目(90715029); 国际合作资助项目 |
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| 摘 要： | Kirchhoff叠前时间偏移是地震数据处理中最耗时的常用模块之一。为加快计算和显示速度,针对CUDA平台多处理器流水线特性,对传统Kirchhoff叠前时间偏移算法在CUDA平台上进行了重新设计,包括基于CUDA的Kirchhoff叠前时间偏移算法、基于CUDA的纵波波动方程算法和GPU与CPU间的通信算法三个子算法。所有算法在NVIDIA GeForce 8800 GT系统上编译实现，通过对比相同数据在Intel Core2Due CPU 2.0 GHz的地震偏移,综合分析和实验结果表明，基于CUDA
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| 关 键 词： | 统一计算设备架构 图形处理器 地震偏移 地震数据处理 |
Implement Kirchhoff prestack time migration algorithm on CUDA architecture |
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| LI Ken-li,PENG Jun-jie,ZHOU Shi-yong. Implement Kirchhoff prestack time migration algorithm on CUDA architecture[J]. Application Research of Computers, 2009, 26(12): 4474-4477. DOI: 10.3969/j.issn.1001-3695.2009.12.020 |
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| Authors: | LI Ken-li PENG Jun-jie ZHOU Shi-yong |
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| Affiliation: | (1.College of Computer & Communication, Hunan University, Changsha 410082, China; 2.College of Earth & Space, Peking University, Beijing 100871, China) |
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| Abstract: | Kirchhoff prestack time migration is the most time-consuming part of seismic data process method. In order to accelerating seismic data computing and displaying, the paper designed prestack Kirchhoff time migration algorithm on CUDA platform considering multi-processor line features, including CUDA-based Kirchhoff prestack time migration algorithm, CUDA-based wave equation algorithm, GPU and CPU communication algorithm. Conducted extensive experiments in a PC with Intel Core2Due CPU 2.0 GHz and NVIDIA GeForce 8800 GT graphic card. Presented a comprehensive performance study to prove the efficiency of the proposed algorithms,CUDA-based Kirchhoff prestack time migration algorithm 6 times faster than available traditional CPU algorithm. The results obtained here indicate that GPU can potentially be a very useful platform for processing large-scale seismic data. |
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| Keywords: | CUDA(compute unified device architecture) GPU seismic migration seismic data processing |
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