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Spectral evolution simulation on leading multi-socket, multicore platforms

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5 Author(s)
Tabik, S. ; Dept. of Comput. Archit., Univ. of Malaga, Malaga, Spain ; Mimica, P. ; Plata, O. ; Zapata, E.
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Spectral evolution simulations based on the observed Very Long Baseline Interferometry (VLBI) radio-maps are of paramount importance to understand the nature of extragalactic objects in astrophysics. This work analyzes the performance and scaling of a spectral evolution algorithm on three leading multi-socket, multi-core architectures. We evaluate three parallel models with different levels of data-sharing: a sharing approach, a privatizing approach and a hybrid approach. Our experiments show that the data-privatizing model is reasonably efficient on medium scale multi-socket, multi-core systems (up to 48 cores) while regardless algorithmic and scheduling optimizations, sharing approach is unable to reach acceptable scalability on more than one socket. However, the hybrid model with a specific level of data-sharing gives the best scalability over all the considered multi-socket, multi-core systems.

Published in:

High Performance Computing (HiPC), 2011 18th International Conference on

Date of Conference:

18-21 Dec. 2011