Abstract
To evaluate the communication capabilities of clusters, we must take into account not only the interconnection network but also the system software. In this paper, we evaluate the communication capabilities of a cluster based on dual-Opteron SMP nodes interconnected with QsNetII. In particular, we study the raw network performance, the ability of MPI to overlap computation and communication, and the appropriateness of the local operating systems to support parallel processing. Experimental results show a stable system with a really efficient communication subsystem which is able to deliver 875 MB/s unidirectional bandwidth, 1.6 μsec unidirectional latency, and up to 99.5% CPU availability while communication is in progress.
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García, P.E., Fernández, J., Petrini, F., García, J.M. (2005). Assessing MPI Performance on QsNetII . In: Di Martino, B., Kranzlmüller, D., Dongarra, J. (eds) Recent Advances in Parallel Virtual Machine and Message Passing Interface. EuroPVM/MPI 2005. Lecture Notes in Computer Science, vol 3666. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11557265_51
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DOI: https://doi.org/10.1007/11557265_51
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-29009-4
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