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Performance analysis and prediction for distributed homogeneous clusters

  • Heinz Kredel
  • Hans Günther Kruse
  • Sabine Richling
  • Erich Strohmaier
Special Issue Paper
  • 183 Downloads

Abstract

We present a new performance model based on the roofline concept for the analysis and performance prediction of distributed computing clusters. The background for our performance modeling is the 28 km InfiniBand interconnection between two bwGRiD clusters each consisting of 140 compute nodes in day-to-day production use. The model is used to analyze the MPI performance of intra-cluster communication compared to inter-cluster communication. We compare the new modeling results to our earlier stochastic model (Richling et al. in Proc. of 3PGCIC-2010. IEEE, New York 2010) where we could give an estimate on the bandwidth requirements for doubling the performance of an application (LinPack as the simplest example). We will derive some bounds for the size of regions in a cluster and the scaling of the maximal speed-up for the region-region-interconnected network.

Keywords

Performance model Performance prediction Inter-cluster communication Roofline model 

Notes

Acknowledgements

We thank our colleagues Rolf Bogus, Hermann Lauer and Steffen Hau as well as the bwGRiD team for the help in the construction and operation of the interesting hardware and the optimization of the connection, which is the basis for this paper. One of the authors, H.G. Kruse, thanks LBNL/Berkeley for the hospitality during a research visit. The inspiring and exciting atmosphere favored the becoming of this work. We also thank the referees for the insightful suggestions to improve the paper.

bwGRiD is a Member of the German D-Grid initiative and is funded by the Ministry of Education and Research and the Ministry for Science, Research and Arts Baden-Württemberg.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Heinz Kredel
    • 1
  • Hans Günther Kruse
    • 1
  • Sabine Richling
    • 2
  • Erich Strohmaier
    • 3
  1. 1.IT-CenterUniversity of MannheimMannheimGermany
  2. 2.IT-CenterUniversity of HeidelbergHeidelbergGermany
  3. 3.Future Technology GroupLawrence Berkeley National LaboratoryBerkeleyUSA

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