A new approach to the lattice Boltzmann method for graphics processing units - Centre of Innovation in Telecommunications and Integration of services Accéder directement au contenu
Article Dans Une Revue Computers & Mathematics with Applications Année : 2010

A new approach to the lattice Boltzmann method for graphics processing units

Résumé

Emerging many-core processors, like CUDA capable nVidia GPUs, are promising platforms for regular parallel algorithms such as the Lattice Boltzmann Method (LBM). Since the global memory for graphic devices shows high latency and LBM is data intensive, the memory access pattern is an important issue for achieving good performances. Whenever possible, global memory loads and stores should be coalescent and aligned, but the propagation phase in LBM can lead to frequent misaligned memory accesses. Most previous CUDA implementations of 3D LBM addressed this problem by using low latency on chip shared memory. Instead of this, our CUDA implementation of LBM follows carefully chosen data transfer schemes in global memory. For the 3D lid-driven cavity test case, we obtained up to 86% of the global memory maximal throughput on nVidia's GT200. We show that as a consequence highly efficient implementations of LBM on GPUs are possible, even for complex models.
Fichier principal
Vignette du fichier
obrecht10a-HAL.pdf (438.64 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

inria-00568674 , version 1 (01-03-2011)

Identifiants

Citer

Christian Obrecht, Frédéric Kuznik, Bernard Tourancheau, Jean-Jacques Roux. A new approach to the lattice Boltzmann method for graphics processing units. Computers & Mathematics with Applications, 2010, ⟨10.1016/j.camwa.2010.01.054⟩. ⟨inria-00568674⟩
348 Consultations
762 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More