| 引用本文: | 张卫民,朱小谦,曹小林.半隐式半Lagrangian时间积分及其可扩展并行算法设计.[J].国防科技大学学报,2003,25(5):68-72.[点击复制] |
| ZHANG Weimin,ZHU Xiaoqian,CAO Xiaolin.The Scalable Parallel Algorithm Implementation of Semi-Lagrangian and Semi-implicit Time Integration Scheme[J].Journal of National University of Defense Technology,2003,25(5):68-72[点击复制] |
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| 半隐式半Lagrangian时间积分及其可扩展并行算法设计 |
| 张卫民, 朱小谦, 曹小林 |
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(国防科技大学 计算机学院，湖南 长沙 410073)
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| 摘要: |
| 目前谱模式仍然是全球数值天气预报业务模式的主流。针对全球数值天气预报谱模式，研究两个时间层的半隐式半Lagrangian时间积分格式以及用于计算起始点的准三次空间插值方法，提出了按需通讯的可扩展并行算法设计，在由4个双CPU SMP结点组成的Linux机群环境下，该算法的8任务相对于4任务的加速比达到了1.65，取得了良好的并行效果。 |
| 关键词: 半Lagrangian 谱模式 可扩展并行算法 Linux机群系统 |
| DOI： |
| 投稿日期：2003-03-15 |
| 基金项目:国家自然科学基金资助项目(40245023) |
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| The Scalable Parallel Algorithm Implementation of Semi-Lagrangian and Semi-implicit Time Integration Scheme |
| ZHANG Weimin, ZHU Xiaoqian, CAO Xiaolin |
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(College of Computer，National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| Spectral models are still the mainstream in global operation NWP now. Based on global spectral model, we discuss two-time-level semi-Lagrangian and semi-implicit integration scheme and quasi-cubic spatial interpolation for the terms evaluated at the departure point. A on-demand massage-passing scalable parallel algorithm has been developed. The algorithm is examined in a 4 nodes dual-CPU SMP Linux cluster. The relative speedup of 4 tasks to 8 tasks is 1.65. |
| Keywords: semi-Lagrangian spectral model scalable parallel algorithm Linux cluster |
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