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

Author

Biferale, Luca, Mantovani, Filippo, Pivanti, Marcello, Pozzati, Fabio, Sbragaglia, Mauro, Scagliarini, Andrea, Schifano, Sebastiano Fabio, Toschi, Federico, and Tripiccione, Raffaele

Subjects
COMPUTATIONAL fluid dynamics, MULTIPHASE flow, LATTICE Boltzmann methods, MATHEMATICAL optimization, PARALLEL computers, MULTICORE processors, INTEL microprocessors, COMPUTER architecture
Abstract

Abstract: 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. [Copyright &y& Elsevier]

Published
2011
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