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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 資訊工程學系 > 期刊論文 >  Basic-cycle calculation technique for efficient dynamic data redistribution

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/12772

    Title: Basic-cycle calculation technique for efficient dynamic data redistribution
    Authors: Chung,Yeh-Ching
    教師: 鍾葉青
    Date: 1998
    Publisher: Institute of Electrical and Electronics Engineers Inc
    Relation: IEEE Transactions on Volume 9,Issue 4,April 1998, Page(s):359-377
    Keywords: Computer programming
    Computational methods
    Distributed computer systems
    Parallel processing systems
    Response time
    Program processors
    Mathematical models
    Abstract: Array redistribution is usually required to enhance algorithm performance in many parallel programs on distributed memory multicomputers. Since it is performed at run-time, there is a performance trade-off between the efficiency of the new data decomposition for a subsequent phase of an algorithm and the cost of redistributing data among processors. In this paper, we present a basic-cycle calculation technique to efficiently perform BLOCK-CYCLIC (s) to BLOCK-CYCLIC (t) redistribution. The main idea of the basic-cycle calculation technique is, first, to develop closed forms for computing source/destination processors of some specific array elements in a basic-cycle, which is defined as lcm(s, t)/gcd(s, t). These closed forms are then used to efficiently determine the communication sets of a basic-cycle. From the source/destination processor/data sets of a basic-cycle, we can efficiently perform a BLOCK-CYCLIC (s) to BLOCK-CYCLIC (t) redistribution. To evaluate the performance of the basic-cycle calculation technique, we have implemented this technique on an IBM SP2 parallel machine, along with the PITFALLS method and the multiphase method. The cost models for these three methods are also presented. The experimental results show that the basic-cycle calculation technique outperforms the PITFALLS method and the multiphase method for most test samples.
    Relation Link: http://ieeexplore.ieee.org/Xplore/dynhome.jsp
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/12772
    Appears in Collections:[資訊工程學系] 期刊論文
    [資訊系統與應用研究所] 期刊論文
    [電腦與通訊科技研發中心] 期刊論文

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