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Published in:
2012 | OriginalPaper | Chapter
A Multi-GPU Implementation of a D2Q37 Lattice Boltzmann Code
Authors : Luca Biferale, Filippo Mantovani, Marcello Pivanti, Fabio Pozzati, Mauro Sbragaglia, Andrea Scagliarini, Sebastiano Fabio Schifano, Federico Toschi, Raffaele Tripiccione
Published in: Parallel Processing and Applied Mathematics
Publisher: Springer Berlin Heidelberg
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We describe a parallel implementation of a compressible Lattice Boltzmann code on a multi-GPU cluster based on Nvidia
Fermi
processors. We analyze how to optimize the algorithm for GP-GPU architectures, describe the implementation choices that we have adopted and compare our performance results with an implementation optimized for latest generation multi-core CPUs. Our program runs at ≈ 30% of the double-precision peak performance of one GPU and shows almost linear scaling when run on the multi-GPU cluster.