Optimization of Multi-Phase Compressible Lattice Boltzmann Codes on Massively Parallel Multi-Core Systems

We develop a Lattice Boltzmann code for computational fluid-dynamics and optimize it for massively parallel systems based on multi-core processors. Our code describes 2D multi-phase compressible flows. We analyze the performance bottlenecks that we find as we gradually expose a larger fraction of th...

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Bibliographic Details
Published in:Procedia computer science 2011, Vol.4, p.994-1003
Main Authors: Biferale, Luca, Mantovani, Filippo, Pivanti, Marcello, Pozzati, Fabio, Sbragaglia, Mauro, Scagliarini, Andrea, Schifano, Sebastiano Fabio, Toschi, Federico, Tripiccione, Raffaele
Format: Article
Language:English
Subjects:
Computational fluid-dynamics
Lattice Boltzmann methods
multi-core processors
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Summary:We develop a Lattice Boltzmann code for computational fluid-dynamics and optimize it for massively parallel systems based on multi-core processors. Our code describes 2D multi-phase compressible flows. We analyze the performance bottlenecks that we find as we gradually expose a larger fraction of the available parallelism, and derive appropriate solutions. We obtain a sustained performance for this ready-for-physics code that is a large fraction of peak. Our results can be easily applied to most present (or planned) HPC architectures, based on latest generation multi-core Intel processor architectures.
ISSN:1877-0509
1877-0509
DOI:10.1016/j.procs.2011.04.105