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NAS Benchmark Evaluation of Hku Cluster of Workstations

NAS Benchmark Evaluation of Hku Cluster of Workstations


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About the Book

This dissertation, "Nas Benchmark Evaluation of HKU Cluster of Workstations" by 麥志華, Chi-wah, Mak, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of the thesis entitled "NAS BENCHMARK EVALUATION OF HKU CLUSTER OF WORKSTATIONS" submitted by Mak Chi Wah for the degree of Master of Philosophy at The University of Hong Kong in July 1999 A cluster of twelve SUN UltraSPARC workstations connected in an ATM LAN has been evaluated with the NAS Parallel Benchmark suite. Also the communication performance, i.e. the per-message start-up latency and the per- byte bandwidth, has been evaluated at MPICH/CH_P4 implementation and TCP layers. The research is aimed at identifying performance bottleneck in the system for architectural improvement and providing useful performance parameters for future application development. The result of NAS Parallel Benchmark Class A workloads is compared with that obtained by other clusters including Berkeley NOW, Los Alamos Loki and NAS Whitney clusters. The performance scalability of HKU cluster is low regardless of its high per node computation speed and its high bandwidth network. Comparing the communication performance among the clusters, it is found that the start-up latency of HKU cluster is very high, three to six times higher than the others. Besides, the bandwidth attained by the HKU cluster is only 49% of the available bandwidth. The poor communication performance of HKU cluster resulted in poor performance of communication intensive applications like SP and IS in the NAS Parallel Benchmark suite. Analysing through performance models of the NAS Parallel Benchmarks, substantial improvement can be seen for IS if the communication performance becomes ideal. Owing to the long start-up latency, applications are suggested to exchange messages in batch. Finally, an efficient communication layer or MPI implementation is required for attaining higher performance, utilising the cluster more efficiently and exploiting the underlying network fully. DOI: 10.5353/th_b2987298 Subjects: High performance computing - China - Hong Kong - Evaluation Computer network architectures - Case studies High performance computing - Evaluation - Case studies


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Product Details
  • ISBN-13: 9781374724082
  • Publisher: Open Dissertation Press
  • Publisher Imprint: Open Dissertation Press
  • Height: 279 mm
  • No of Pages: 76
  • Weight: 472 gr
  • ISBN-10: 1374724084
  • Publisher Date: 27 Jan 2017
  • Binding: Hardback
  • Language: English
  • Spine Width: 6 mm
  • Width: 216 mm


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