Multi-GPU Implementation of a Hybrid Thermal Lattice Boltzmann Solver using the TheLMA Framework
EDF R&D, Departement EnerBAT, F-77818 Moret-sur-Loing Cedex, France
Computers and Fluids 80, 269-275, hal-00731152, 2013
@article{obrecht2013multigpu,
title={Multi-GPU Implementation of a Hybrid Thermal Lattice Boltzmann Solver using the TheLMA Framework},
author={Obrecht, C. and Kuznik, F. and Tourancheau, Bernard and Roux, J.-J.},
year={2013}
}
In this contribution, a single-node multi-GPU thermal lattice Boltzmann solver is presented. We implement a simplified version of the hybrid model developed by Lallemand and Luo in 2003, which combines multiple-relaxation-time lattice Boltzmann for the fluid flow with a finite-difference method for temperature. The program is based on the TheLMA framework which was developed for that purpose. The chosen implementation and optimisation strategies are described, both for inter-GPU communication and for coupling with the thermal component of the model. Validation and performance results are provided as well.
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