| 波动方程三维叠前深度偏移并行计算的负载平衡方案 |
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| 作者姓名： | 刘礼农 刘洪 李幼铭 |
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| 作者单位： | 中国科学院地质与地球物理所, 北京 100101 |
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| 基金项目： | 中国科学院知识创新工程重大项目资助课题(KZCXIy01);国家自然科学基金;大庆石油管理局资助项目(49894190);国家高性能计算基金资助项目(000123) |
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| 摘 要： |
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| 关 键 词： | 波动方程 叠前深度偏移 并行计算 索引排序 堆排序 负载平衡 |
| 收稿时间： | 2002-05-13 |
| 修稿时间： | 2002-10-08 |
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| Authors: | LIU LiNong LIU Hong LI YouMing |
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| Institution: | Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | The improvement and combination of software and hardware of PC cluster have been an increasingly helpful tool of handling over the huge computation of wave equation 3-D prestack depth migration.Load balance among the nodes of cluster, however, was the bottleneck of the speeding-up ratio of the parallel algorithms.The index sort and heapsort was applied to distribute the migration work of each node and realize dynamic load balance.Discusses the load balance strategy in common shot wave equation 3-D prestack depth migration computation in detail and shows satisfied speeding-up ratio through efficiency test on the field data. |
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| Keywords: | wave-equation prestack depth migration parallel computing index sort heapsort load balance |
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