Berlin 2012 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 17: Poster Session

MM 17.64: Poster

Monday, March 26, 2012, 17:00–19:00, Poster B

Exploring GPUs for Mesoscale Simulations — •Alexander Monas, Claas Hüter, and Robert Spatschek — Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany

The modeling of microstructure evolution like solidification or solid state transformations as well as many other pattern formation processes in general requires the solution of coupled partial differential equations. This is in particular the case for phase field modeling, where the motion of phase fronts is represented by the temporal evolution of an order parameter field. These simulations are very time consuming, and therefore frequently massive parallelization is used to accelerate the computations. Here we report on implementations on (consumer) graphics cards, which have a theoretical peak performance of more than 1 TFlop. We demonstrate the efficiency of this approach for diffusion problems and phase transformation processes, where we use real space implementations in two and three dimensions. For amplitude equation models, which are derived from classical density functional theory, we use pseudospectral methods. The efficiency of the GPU implementations is shown for solid-liquid interface interaction and for dislocation pairing transitions at hot grain boundaries.