| 基于MPI+OpenMP的多层次并行偏移算法研究 |
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| 引用本文： | 陈辉,孙雷鸣,李录明,罗省贤,赵安军.基于MPI+OpenMP的多层次并行偏移算法研究[J].成都理工大学学报(自然科学版),2010,37(5):528-534. |
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| 作者姓名： | 陈辉 孙雷鸣 李录明 罗省贤 赵安军 |
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| 作者单位： | 成都理工大学"数学地质"四川省高校重点实验室,成都,610059;中海油能源发展特普地球物理分公司,广东,湛江,524057;中国石油华北油田公司勘探部,河北,任丘,062550 |
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| 基金项目： | 国家发改委重点资助项目，教育部高校博士点基金资助项目 |
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| 摘 要： | 根据PC集群的系统特性和叠前深度偏移的理论特点,提出了多层次并行单平方根和双平方根叠前深度偏移算法.从波动方程叠前深度偏移的概念和特征入手,针对单平方根和双平方根波动方程的实现特点,利用PC集群各节点内的每个内核,构建两类多层次并行叠前深度偏移算法.理论模型验证了其正确性,得到了较好的成像效果,不同类型的多层次并行偏移算法计算结果有所差异.多层次并行偏移算法是在实现MPI并行偏移的基础上,对集群各节点内核的充分利用,有利于提升PC集群的计算性能,为叠前深度偏移的实际推广奠定基础.
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| 关 键 词： | MPI OpenMP 多层次并行 偏移 |
Research on the multi-level parallel migration algorithm based on MPI and OpenMP |
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| CHEN Hui,SUN Lei-ming,LI Lu-ming,LUO Sheng-xian,ZHAO An-jun.Research on the multi-level parallel migration algorithm based on MPI and OpenMP[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2010,37(5):528-534. |
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| Authors: | CHEN Hui SUN Lei-ming LI Lu-ming LUO Sheng-xian ZHAO An-jun |
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| Institution: | CHEN Hui1,SUN Lei-ming2,LI Lu-ming1,LUO Sheng-xian1,ZHAO An-jun3 1.Key Laboratory of Geomathematics of Sichuan Province,Chengdu University of Technology,Chengdu 610059,China,2.CNOOC Energy Technology &Services Development Prospecting Geophysical,Zhanjiang 524057,3.Department of Huabei Oilfield Company Exploration,CNPC,Renqiu 062550 |
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| Abstract: | On the basis of PC cluster system characteristics and pre-stack depth migration theory,this paper proposes the multi-level parallel single square root and the double square root pre-stack depth migration algorithms.Starting from the concepts and features of the wave equation pre-stack depth migration,aiming at the single square root and the double square root wave equation realization characteristics,and using each core in every node of PC cluster,the paper constructs two types of multi-level parallel pre-s... |
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| Keywords: | MPI OpenMP |
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