| 球谐分析及合成并行计算 |
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| 引用本文： | 肖华东,陆洋.球谐分析及合成并行计算[J].测绘科学,2007,32(1):21-23. |
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| 作者姓名： | 肖华东 陆洋 |
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| 作者单位： | 中国科学院,测量与地球物理研究所,武汉,430077;中国科学院研究生院,北京,100039;中国科学院,测量与地球物理研究所,武汉,430077;中国科学院,天文地球动力学联合研究中心,上海,200030 |
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| 基金项目： | 中国科学院基金(KZCX3-SW-132、INF105-SCE) |
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| 摘 要： | 本文介绍了球谐合成和分析问题的数值计算原理,研究分析了其内在的并行性,提出了区域划分和聚合通信的并行计算策略。基于傅立叶变换技术,应用MPI(消息传递接口)并行编程模式,实现了球谐分析及合成计算的并行化。实验结果表明,较之串行实现,并行实现大大缩短了计算时间,获得了近似线形加速比,取得很高的并行效率。
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| 关 键 词： | 球谐函数 并行计算 区域分解 FFT MPI |
| 文章编号： | 1009-2307(2007)01-0021-03 |
| 修稿时间： | 2006-03-07 |
Parallel computation of spherical harmonic analysis and synthesis |
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| XIAO Hua-dong,LU Yang.Parallel computation of spherical harmonic analysis and synthesis[J].Science of Surveying and Mapping,2007,32(1):21-23. |
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| Authors: | XIAO Hua-dong LU Yang |
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| Abstract: | In this paper,a numerical computing principle of spherical harmonic synthesis and analysis is introduced,and its inherent parallelizability is studied.Then a parallel computing strategy of domain division and collective communication is proposed.The parallelism of computation of spherical harmonic analysis and synthesis is achieved by applying MPI(Message Passing Interface)mode of parallel computing based on the Fourier transformation techniques.The experimental results indicate that the parallel implementation significantly reduces computing time,compared with serial implementation,and obtains a linear speedup and high parallel performance |
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| Keywords: | spherical harmonics parallel computing domain decomposition FFT MPI |
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