Modeling message-passing overhead on NCHC formosa PC cluster

  • Authors:
  • Chau-Yi Chou;Hsi-Ya Chang;Shuen-Tai Wang;Shou-Cheng Tcheng

  • Affiliations:
  • National Center For High-Performance Computing;National Center For High-Performance Computing;National Center For High-Performance Computing;National Center For High-Performance Computing

  • Venue:
  • GPC'06 Proceedings of the First international conference on Advances in Grid and Pervasive Computing
  • Year:
  • 2006

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Abstract

The communication plays a role in the overall system performance. The characterization of the communication overhead is very important to estimate the global performance of parallel applications and to detect possible bottlenecks. In this work, we evaluate and model the performance of the message-passing libraries on NCHC Formosa PC Cluster, a large cluster system with dual processor nodes and connected by Gigabits Ethernet networks. Our aim is to fairly characterize the communication primitives using general models and performance metrics. We use the formulae to estimate the communication time of a real application program for molecular dynamics simulation. We hope that it is able to provide some useful information for performance prediction and scientific computing.