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2002 International Conference on Parallel Processing Workshops (ICPPW'02)
Data Distribution Schemes of Sparse Arrays on Distributed Memory Multicomputers
Vancouver, B.C., Canada
August 18-August 21
ISBN: 0-7695-1680-7
Chun-Yuan Lin, Feng Chia University
Yeh-Ching Chung, Feng Chia University
Jen-Shiuh Liu, Feng Chia University
A data distribution scheme of sparse arrays on a distributed memory multicomputer, in general, is composed of three phases, data partition, data distribution, and data compression. To implement the data distribution scheme, methods proposed in the literature first perform the data partition phase, then the data distribution phase, followed by the data compression phase. We called this scheme as Send Followed Compress (SFC) scheme. In this paper, we propose two other data distribution schemes, Compress Followed Send (CFS) and Encoding-Decoding (ED), for sparse array distribution. In the CFS scheme, the data compression phase is performed before the data distribution phase. In the ED scheme, the data compression phase can be divided into two steps, encoding and decoding. The encoding step and the decoding step are performed before and after the data distribution phase, respectively. To evaluate the CFS and the ED schemes, we compare them with the SFC scheme. Both theoretical analysis and experimental test were conducted. In theoretical analysis, we analyze the SFC, the CFS, and the ED schemes in terms of the data distribution time and the data compression time. In experimental test, we implemented these schemes on an IBM SP2 parallel machine. From the experimental results, for most of test cases, the CFS and the ED schemes outperform the SFC scheme. For the CFS and the ED schemes, the ED scheme outperforms the CFS scheme for all test cases.
Index Terms:
Data distribution schemes, Data compression methods, Partition methods, Sparse ratio, distributed memory multicomputers
Citation:
Chun-Yuan Lin, Yeh-Ching Chung, Jen-Shiuh Liu, "Data Distribution Schemes of Sparse Arrays on Distributed Memory Multicomputers," icppw, pp.551, 2002 International Conference on Parallel Processing Workshops (ICPPW'02), 2002
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