海量地震数据叠前逆时偏移的多GPU联合并行计算策略
摘要
叠前逆时深度偏移(Pre-stack Reverse-time Depth Migration,RTM)是一种全波场成像方法。由于其实现过程存在着存储量、计算量庞大以及成像噪声等问题,难以适应实际生产的需求,使得该方法一直没有在工业界得到广泛的应用。采用震源波场重构的策略降低了存储需求;针对其计算量巨大的问题,利用了图形处理器(Graphic Processing Unit,GPU)进行并行计算,并与中央处理器(Central Processing Unit,CPU)结合实现协同并行处理;同时采用GPU多卡联合策略解决GPU显存不足的瓶颈。实际资料试验处理结果表明,上述技术措施能够在保证RTM高精度成像优势的基础上极大地提高计算效率,为应用RTM处理海量地震数据提供了良好的技术支持。
引文
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[11]赵磊,王华忠,刘守伟.逆时深度偏移成像方法及其在CPU/GPU异构平台上的实现[J].岩性油气藏,2010,22(F07):36-41Zhao L,Wang H Z,Liu S W.Reverse-time depth mi-gration imaging and its application at CPU/GPUplatform[J].Lithologic Reservoirs,2010,22(F07):36-41
[12]Araya-Polo M,Rubio F,de la Cruz R,et a1.3Dseis-mic imaging through reverse-time migration on hom-ogeneous and heterogeneous multi-core processors[J].Journal of Scientific Programming,2009,17(1/2):186-198
[13]Micikevicius P.3Dfinite difference computation onGPUs using CUDA[J].Proceedings of 2nd Work-shop on General Purpose Processing on GraphicsProcessing Units,2009,79-84
[14]李博,刘红伟,刘国峰,等.地震叠前逆时偏移算法的CPU/GPU实施对策[J].地球物理学报,2010,53(12):2938-2943Li B,Liu H W,Liu G F,et al.Computational strate-gy of seismic pre-stack reverse time migration onCPU/GPU[J].Chinese Journal of Geophysics,2010,53(12):2938-2943
[15]Symes W W.Reverse time migration with optimalcheck pointing[J].Geophysics,2007,72(5):SM213-SM221
[16]Villarreal A,Scales J A.Distributed three dimen-sional finite-difference modeling of wave propagationin acoustic media[J].Computers in Physics,1997,11(4):388-399
[17]李博,刘国峰,刘洪.地震叠前时间偏移的一种图形处理器提速实现方法[J].地球物理学报,2009,52(1):245-252Li B,Liu G F,Liu H.A method of using GPU to ac-celerate seismic pre-stack time migration[J].ChineseJournal of Geophysics,2009,52(1):245-252
[2]陈可洋.基于高阶有限差分的波动方程叠前逆时偏移方法[J].石油物探,2009,48(5):475-478Chen K Y.Wave equation pre-stack reverse-time mi-gration method based on high-order finite-differenceapproach[J].Geophysical Prospecting for Petrole-um,2009,48(5):475-478
[3]杨勤勇,段心标.逆时偏移技术发展现状与趋势[J].石油物探,2010,49(1):92-98Yang Q Y,Duan X B.Development status and trendof reverse time migration[J].Geophysical Prospec-ting for Petroleum,2010,49(1):92-98
[4]Whitmore N D.Iterative depth migration by back-ward time propagation[J].Expanded Abstracts of53rd Annual Internat SEG Mtg,1983,827-830
[5]McMechan G A.Migration by extrapolation of time-dependent boundary values[J].Geophysical Prospec-ting,1983,31(3):413-420
[6]Loewenthal D,Mufti I R.Reversed time migration inspatial frequency domain[J].Geophysics,1983,48(5):627-635
[7]陈可洋.地震波逆时偏移方法研究综述[J].勘探地球物理进展,2010,33(3):153-159Chen K Y.Review of seismic reverse time migrationmethods[J].Progress in Exploration Geophysics,2010,33(3):153-159
[8]Yoon K,Marfurt K J,Starr W.Challenges in re-verse-time migration[J].Expanded Abstracts of 74thAnnual Internat SEG Mtg,2004,1057-1060
[9]Dussaud E.Computational strategies for reverse-time migration[J].Expanded Abstracts of 78th An-nual Internat SEG Mtg,2008,2267-2271
[10]Foltinek D,Eaton D,Mahovsky J,et a1.Industrial-scale reverse time migration on GPU hardware[J].Expanded Abstracts of 79th Annual Internat SEGMtg,2009,2789-2793
[11]赵磊,王华忠,刘守伟.逆时深度偏移成像方法及其在CPU/GPU异构平台上的实现[J].岩性油气藏,2010,22(F07):36-41Zhao L,Wang H Z,Liu S W.Reverse-time depth mi-gration imaging and its application at CPU/GPUplatform[J].Lithologic Reservoirs,2010,22(F07):36-41
[12]Araya-Polo M,Rubio F,de la Cruz R,et a1.3Dseis-mic imaging through reverse-time migration on hom-ogeneous and heterogeneous multi-core processors[J].Journal of Scientific Programming,2009,17(1/2):186-198
[13]Micikevicius P.3Dfinite difference computation onGPUs using CUDA[J].Proceedings of 2nd Work-shop on General Purpose Processing on GraphicsProcessing Units,2009,79-84
[14]李博,刘红伟,刘国峰,等.地震叠前逆时偏移算法的CPU/GPU实施对策[J].地球物理学报,2010,53(12):2938-2943Li B,Liu H W,Liu G F,et al.Computational strate-gy of seismic pre-stack reverse time migration onCPU/GPU[J].Chinese Journal of Geophysics,2010,53(12):2938-2943
[15]Symes W W.Reverse time migration with optimalcheck pointing[J].Geophysics,2007,72(5):SM213-SM221
[16]Villarreal A,Scales J A.Distributed three dimen-sional finite-difference modeling of wave propagationin acoustic media[J].Computers in Physics,1997,11(4):388-399
[17]李博,刘国峰,刘洪.地震叠前时间偏移的一种图形处理器提速实现方法[J].地球物理学报,2009,52(1):245-252Li B,Liu G F,Liu H.A method of using GPU to ac-celerate seismic pre-stack time migration[J].ChineseJournal of Geophysics,2009,52(1):245-252
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