基于多处理器的谐波分析  

The Analysis of Harmonic Based on Multi-Processor

作　　者：范汉青[1] 陆达[1] 朱喜娜[1] 

机构地区：[1]厦门大学计算机科学系,福建厦门361005

出　　处：《计算机技术与发展》2010年第5期139-141,166,共4页Computer Technology and Development

摘　　要：随着多核技术的发展,多核计算机逐渐成为市场的主流,由此对程序设计带来了巨大的改变。如何以最少的代价将现有的代码修改成适应多核计算机的程序,已经成为一个重要的课题。从电能质量分析中最重要的谐波检测入手,对谐波检测中利用的傅里叶变换算法进行分析,证明了傅里叶变换结果和谐波的关系,介绍了几种谐波分析的算法,给出了利用OpenMP编程技术对基于复序列的傅里叶变换算法进行并行化改造的过程,并对并行化的效率进行了分析。实验表明OpenMP对少量数据的运算效果不是十分理想,比较适合于大数据量的并行运算,同时并行的粒度越大,效果越好。With multi-core technology development,multi-core computer has gradually become the mainstream in the market;It brings tremendous change in program design.How to modify the existing code with the least price and let it adapt to multi-core computers,has become an important issue.Based on the crucial part-harmonic detection in analyzes of the quality of electric energy,analyzes Fourier transform algorithm which used in the harmonic detection,subsequently,proofs of the relationship between the result of Fourier transform and harmonic wave.Furthermore introduces some classical Harmonic analysis algorithms.At the end of this academic thesis emphatically points out the course of parallel transformation in the Fourier transform algorithm which based on complex sequence,and analyses the parallelization efficiency.The experiments show that OpenMP is not expectative for calculating effect of the small amount of data but suitable for the parallel computing of large data.

关 键 词：复序列 快速傅里叶 物理意义 多核技术 OPENMP 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]