Solving incompressible two-phase flows on multi-GPU clusters

Peter Zaspel, Michael Griebel
Institute for Numerical Simulation, University of Bonn, Wegelerstrasse 6, 53115 Bonn, Germany
Computers & Fluids, 2012


   title={Solving incompressible two-phase flows on multi-GPU clusters},

   author={Zaspel, P. and Griebel, M.},

   journal={Computers & Fluids},




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We present a fully multi-GPU-based double-precision solver for the three-dimensional two-phase incompressible Navier-Stokes equations. It is able to simulate the interaction of two fluids like air and water based on a level-set approach. High-order finite difference schemes and Chorin’s projection approach for space and time discretization are applied. An in-depth performance analysis shows a realistic speed-up of the order of three by comparing equally priced GPUs and CPUs and more than a doubling in energy efficiency for GPUs. We observe profound strong and weak scaling on two different multi-GPU clusters.
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