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Parallel Distributed Implementation of GHT on Ethernet Multicluster  

Kim, Yeong-Soo (Div. of Computer Information, Yeungnam College of Science & Technology)
Kim, Myung-Ho (Div. of Computer Information, Yeungnam College of Science & Technology)
Choi, Heung-Moon (School of Electrical Engineering & Computer Science, Kyungpook National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea CI / v.46, no.3, 2009 , pp. 96-106 More about this Journal
Abstract
Extending the scale of the distributed processing in a single Ethernet cluster is physically restricted by maximum ports per switch. This paper presents an implementation of MPI-based multicluster consisting of multiple Ethernet switches for extending the scale of distributed processing, and a asymptotical analysis for communication overhead through execution-time analysis model. To determine an optimum task partitioning, we analyzed the processing time for various partitioning schemes, and AAP(accumulator array partitioning) scheme was finally chosen to minimize the overall communication overhead. The scope of data partitioned in AAP was modified to fit for incremented nodes, and suitable load balancing algorithm was implemented. We tried to alleviate the communication overhead through exploiting the pipelined broadcast and flat-tree based result gathering, and overlapping of the communication and the computation time. We used the linear pipeline broadcast to reduce the communication overhead in intercluster which is interconnected by a single link. Experimental results shows nearly linear speedup by the proposed parallel distributed GHT implemented on MPI-based Ethernet multicluster with four 100Mbps Ethernet switches and up to 128 nodes of Pentium PC.
Keywords
GHT; MPI;
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Times Cited By KSCI : 1  (Citation Analysis)
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