网格并行编程方法及其在地震波场正演模拟中的应用
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摘要
波动方程的地震波场正演模拟是研究复杂地区地震资料采集、处理和解释的有效辅助手段,其巨大的计算量往往是单台计算机难以承受的。MPICH-G2是传统的紧耦合并行策略在网格中的实现,然而它对网格环境要求高,带宽需求大,且已不能适应目前基于Web Service的网格架构。研究并实现了网格松散耦合并行策略,将任务按照粗粒度方式划分,减少子任务间同步次数和通信量,有机地将网格计算和波动方程的地震波场正演模拟结合起来。由于地震波场正演模拟是计算密集型任务,节点间数据传输量并不很大,非常适合这种松散耦合的并行策略。实验表明,这种网格并行方式可以有效地减少地震波场正演模拟的时间,提高效率。
The seismic wave field forward simulation is an effective aided method to study seismic data acquisition,processing and interpretation in various complex areas.However the large amount of computation makes it unaffordabe for only one computer.MPICH-G2 is a traditional tightly coupled parallel method which has a high demand for the grid environment and bandwidth.A new loosely coupled parallel strategy was studied and implemented,with the tasks divided into small ones to reduce synchronous times and communication volume.Seismic wave field forward modeling in grid was implemented by using this strategy.The results show that this strategy reduces computing time and improves computational efficiency.
The seismic wave field forward simulation is an effective aided method to study seismic data acquisition,processing and interpretation in various complex areas.However the large amount of computation makes it unaffordabe for only one computer.MPICH-G2 is a traditional tightly coupled parallel method which has a high demand for the grid environment and bandwidth.A new loosely coupled parallel strategy was studied and implemented,with the tasks divided into small ones to reduce synchronous times and communication volume.Seismic wave field forward modeling in grid was implemented by using this strategy.The results show that this strategy reduces computing time and improves computational efficiency.
引文
[1]韩文功,印兴耀,李振春,等.地震技术新进展[M].山东:中国石油大学出版社,2006.
[2]王延光,李振春,穆志平,等.一种适于强横向变速的高阶差分正演模拟方法[J].石油大学学报:自然科学版,2002,36(5):37-39.WANG Yan-guang,LI Zhen-chun,MU Zhi-ping,etal.A high-order finite-difference forward-modelingmethod fit for strong lateral velocity variation[J].Journal of The University of Petroleum:Edition ofNatural Science,2002,36(5):37-39.(in Chinese).
[3]印兴耀,赵剑,张繁昌,等.球面波叠前地震记录的合成方法[J].中国石油大学学报:自然科学版,2006,01.YIN Xing-yao,ZHAO Jian,ZHANG Fan-chang,etal.Method of generating prestack synthetic seismo-grams of spherical wave[J].Journal of China Univer-sity of Petroleum:Edition of Natural Science,2006,30(01):26-32.
[4]王永刚,邢文军,谢万学,等.完全匹配层吸收边界条件的研究[J].中国石油大学学报:自然科学版,2007,31(1):26-32.WANG Yong-gang,XING Wen-jun1,XIE Wan-xue,et al.Study of absorbing boundary condition by per-fectly matched layer[J].Journal of China Universityof Petroleum:Edition of Natural Science,2007,31(01):19-24.
[5]FOSTER I,KESSELMAN C,TUECKE S.Theanatomy of the grid:enabling scalable virtual organi-zations[J].International Journal of SupercomputerApplications,2001,15(3):200-222.
[6]FOSTER I,KESSELMAN C,NICK J,et al.ThePhysiology of the Grid:An Open Grid Services Archi-tecture for Distributed Systems Integration[EB-OL].http://www.globus.org/alliance/publications/pa-pers/ogsa.pdf.
[7]FOSTER I.Globus toolkit version 4:software forservice-oriented systems[J].Journal of Computer Sci-ence and Technology,2006,21(4):513-520.
[8]FOSTER I,KESSELMAN C,NICK J M,et al.Thephysiology of the grid[M].Chinchester,UK:JohnWiley&Sons,2003.
[9]亓雪冬,仝兆岐,何潮观.基于网格的同步计算划分策略研究[C].宁波:全国第18届计算机技术与应用(CACIS),2007.
[10]KARONIS N,TOONEN B,FOSTER I.MPICH-G2:A Grid-enabled Implementation of the MessagePassing Interface[J].Journal of Parallel and Dis-tributed Computing,2003,63(5):551-563.
[2]王延光,李振春,穆志平,等.一种适于强横向变速的高阶差分正演模拟方法[J].石油大学学报:自然科学版,2002,36(5):37-39.WANG Yan-guang,LI Zhen-chun,MU Zhi-ping,etal.A high-order finite-difference forward-modelingmethod fit for strong lateral velocity variation[J].Journal of The University of Petroleum:Edition ofNatural Science,2002,36(5):37-39.(in Chinese).
[3]印兴耀,赵剑,张繁昌,等.球面波叠前地震记录的合成方法[J].中国石油大学学报:自然科学版,2006,01.YIN Xing-yao,ZHAO Jian,ZHANG Fan-chang,etal.Method of generating prestack synthetic seismo-grams of spherical wave[J].Journal of China Univer-sity of Petroleum:Edition of Natural Science,2006,30(01):26-32.
[4]王永刚,邢文军,谢万学,等.完全匹配层吸收边界条件的研究[J].中国石油大学学报:自然科学版,2007,31(1):26-32.WANG Yong-gang,XING Wen-jun1,XIE Wan-xue,et al.Study of absorbing boundary condition by per-fectly matched layer[J].Journal of China Universityof Petroleum:Edition of Natural Science,2007,31(01):19-24.
[5]FOSTER I,KESSELMAN C,TUECKE S.Theanatomy of the grid:enabling scalable virtual organi-zations[J].International Journal of SupercomputerApplications,2001,15(3):200-222.
[6]FOSTER I,KESSELMAN C,NICK J,et al.ThePhysiology of the Grid:An Open Grid Services Archi-tecture for Distributed Systems Integration[EB-OL].http://www.globus.org/alliance/publications/pa-pers/ogsa.pdf.
[7]FOSTER I.Globus toolkit version 4:software forservice-oriented systems[J].Journal of Computer Sci-ence and Technology,2006,21(4):513-520.
[8]FOSTER I,KESSELMAN C,NICK J M,et al.Thephysiology of the grid[M].Chinchester,UK:JohnWiley&Sons,2003.
[9]亓雪冬,仝兆岐,何潮观.基于网格的同步计算划分策略研究[C].宁波:全国第18届计算机技术与应用(CACIS),2007.
[10]KARONIS N,TOONEN B,FOSTER I.MPICH-G2:A Grid-enabled Implementation of the MessagePassing Interface[J].Journal of Parallel and Dis-tributed Computing,2003,63(5):551-563.
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