Title: Performance analysis of a large-scale cosmology application on three cluster systems

Authors: Zhiling Lan, Prathibha Deshikachar

Addresses: Department of Computer Science, Illinois Institute of Technology, Chicago, Il 60616, USA. ' Department of Computer Science, Illinois Institute of Technology, Chicago, Il 60616, USA

Abstract: A typical cosmological simulation requires a large amount of computing power, which is hard to satisfy with a single machine. Cluster systems provide the opportunity to execute such large-scale applications. In this paper, we investigate and analyse the performance of a large-scale production cosmology application, the ENZO code, on different cluster environments. Three cluster systems, each of them representing a widely used cluster environment in the area of scientific computing, are used in this work: an IBM SP2 system at SDSC, an IA-64 Linux cluster at NCSA and a SUN cluster at IIT. The performance is evaluated from three aspects: overall performance, communication characteristics and load balancing characteristics. The experimental data show that the cosmology performance on these clusters depends on the system performance and the application characteristics. The application performance on these clusters does not totally match the NPB measurement. Further, it seems that the IA-64 Linux cluster does not scale past 32 CPUs for this application.

Keywords: cluster computing; performance; adaptive mesh refinement; IBM SP2; IA-64 Linux cluster; SUN cluster; cosmology.

DOI: 10.1504/IJHPCN.2004.008900

International Journal of High Performance Computing and Networking, 2004 Vol.2 No.2/3/4, pp.156 - 164

Published online: 02 Feb 2006 *

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