起伏地表叠前时间偏移的多级并行优化技术
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
Kirchhoff积分法叠前时间偏移并行实现方案除了要考虑数据体规模外,还必须考虑大规模节点部署条件下的并行执行效率。而在目前的数据处理规模及集群配置条件下,利用多进程进行成像域并行的实现策略存在内存占用率高、不能充分发挥并行文件系统优势等问题,特别是在多节点大规模计算时,进程间的网络通讯、同步开销及I/O问题严重影响并行效率。为了提高起伏地表叠前时间偏移算法在大规模部署条件下的偏移效率,分析了该算法的技术特色和计算特点,提出了一种适用于积分法偏移的多级并行计算架构,采用偏移距域的多进程数据域并行、地震数据I/O与偏移计算的异步并行以及单进程内的多线程成像域并行技术对原始算法进行了架构升级及算法优化。利用34个节点的SMP集群系统和Panasas并行集群存储系统对优化前、后的算法进行测试,某工区实际叠前地震数据的测试结果表明,该并行架构能够有效降低网络通讯和数据I/O对计算性能的影响,使算法的并行效率和大规模集群环境下部署的可扩展能力同时得到提升。
引文
[1]朱海波,林伯香,徐兆涛,等.起伏地表叠前时间偏移处理流程及其应用研究[J].石油物探,2012,51(5):486-492Zhu H B,Lin B X,Xu Z T,et al.Prestack time mi-gration scheme from rugged topography and its ap-plication[J].Geophysical Prospecting for Petrole-um,2012,51(5):486-492
    [2]郝军,杨瑞娟,吴靖,等.复杂地表地震资料静校正问题的处理[J].复杂油气藏,2011,4(3):34-37Hao J,Yang R J,Wu J,et al.Processing of staticcorrection problems of seismic data in the complexsurface[J].Complex Hydrocarbon Reservoirs,2011,4(3):34-37
    [3]程玖兵,马在田,陶正喜,等.山前带复杂构造成像方法研究[J].石油地球物理勘探,2006,41(5):525-529Cheng J B,Ma Z T,Tao Z X,et al.Imaging study ofpiedmont complex structures[J].Oil GeophysicalProspecting,2006,41(5):525-529
    [4]赵改善.我们需要多大和多快的计算机?[J].勘探地球物理进展,2004,27(1):22-28Zhao G S.How big and fast computers can meet ourneeds?[J].Progress in Exploration Geophysics,2004,27(1):22-28
    [5]谌艳春,李守济,姚盛,等.高精度三维叠前时间偏移处理技术在四扣地区的应用[J].石油物探,2005,44(4):370-373Chen Y C,Li S J,Yao S,et al.Application of high-precision 3-D pre-stack time migration in Sikou area[J].Geophysical Prospecting for Petroleum,2005,44(4):370-373
    [6]齐俊宁,朱敏,吴彦伟,等.海量数据叠前时间偏移方法[J].天然气工业,2008,28(11):46-48Qi J N,Zhu M,Wu Y W,et al.The method of pres-tack time migration in processing enormous data[J].Natural Gas Industry,2008,28(11):46-48
    [7]李伟,顾乃杰,刘振宽,等.三维叠前Kirchhoff深度偏移软件在并行计算机上的实现技术[J].计算机工程与应用,2002,20(4):211-214Li W,Gu N J,Liu Z K,et al.3-D pre-stack Kirchhoffdepth migration and its parallel calculation technique[J].Computer Engineering and Applications,2002,20(4):211-214
    [8]Bhardwaj D,Yerneni S,Phadke S.Efficient parallelI/O for seismic imaging in a distributed computingenvironment[J].Proceedings of 3rd Conference andExposition on Petroleum Geophysics,2000,105-108
    [9]王华忠,蔡杰雄,孔祥宁,等.适于大规模数据的三维Kirchhoff积分法体偏移实现方案[J].地球物理学报,2010,53(7):1699-1709Wang H Z,Cai J X,Kong X N,et al.An implemen-tation of Kirchhoff integral prestack migration forlarge-scale data[J].Oil Geophysical Prospecting,2010,53(7):1699-1709
    [10]王华忠,刘少勇,孔祥宁,等.大规模三维地震数据Kirchhoff叠前深度偏移及其并行实现[J].石油地球物理勘探,2012,47(3):404-410Wang H Z,Liu S Y,Kong X N,et al.3D KirchhoffPSDM for large-scale seismic data and its parallelimplementation strategy[J].Oil Geophysical Pros-pecting,2012,47(3):404-410
    [11]王霖,晏海华.一种叠前时间偏移并行模式的流水线改进方法[J].微电子学与计算机,2008,25(10):54-57Wang L,Yan H H.Method of improving perform-ance of Kirchhoff prestack time migration parallelpattern through pipelining[J].Microelectronics&Computer,2008,25(10):54-57
    [12]Lumley D E,Claerbout J F,Bevc D.Anti-aliasedKirchhoff 3-D migration[J].Expanded Abstracts of64th Annual Internat SEG Mtg,1994,1282-1285
    [13]刘洪,刘国锋,李博,等.基于横向导数的走时计算方法及其在叠前时间偏移中的应用[J].石油物探,2009,48(1):3-10Liu H,Liu G F,Li B,et al.The travel time calcula-tion method via lateral derivative of velocity and itsapplication in pre-stack time migration[J].Geophys-ical Prospecting for Petroleum,2009,48(1):3-10
    [14]朱海波,方伍宝,孔祥宁,等.扩展的横向变速叠前时间偏移技术[J].石油物探,2009,48(2):153-156Zhu H B,Fang W B,Kong X N,et al.Extended pre-stack time migration for laterally variable velocity[J].Geophysical Prospecting for Petroleum,2009,48(2):153-156

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心