The Experience in Designing and Evaluating the High Performance Cluster Netuno

Authors:
Gabriel P. Silva;Juliana Correa;Cristiana Bentes;Sergio Guedes;Mariela Gabioux
Affiliations:
DCC/IM-UFRJ, Rio de Janeiro, Brazil 21941-909;DCC/IM-UFRJ, Rio de Janeiro, Brazil 21941-909;DESC-UERJ, Rio de Janeiro, Brazil 20550-900;NCE-UFRJ, Rio de Janeiro, Brazil 20010-974;COPPE-Oceano-UFRJ, Rio de Janeiro, Brazil 21945-970
Venue:
International Journal of Parallel Programming
Year:
2014

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Abstract

This paper presents the Netuno supercomputer, a large-scale cluster installed at Federal University of Rio de Janeiro in Brazil. A detailed performance evaluation of Netuno is presented, depicting its computational and I/O performance, as well as the results for two real-world applications. Since building a high- performance cluster for running a wide range of applications is a non-trivial task, some lessons learned from assembling and operating this cluster, such as the excellent performance of the OpenMPI library, and the relevance of employing an efficient parallel file system over the traditional NFS system, can be useful knowledge to support the design of new systems. Currently, Netuno is being heavily used to run large scale simulations in the areas of ocean modeling, meteorology, engineering, physics, and geophysics.