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Solving incompressible two-phase flows on multi-GPU clusters

: Zaspel, P.; Griebel, M.


Computers and fluids 80 (2013), S.356-364
ISSN: 0045-7930
International Conference on Parallel Fluid Dynamics (ParCFD) <23, 2011, Barcelona>
Zeitschriftenaufsatz, Konferenzbeitrag
Fraunhofer SCAI ()

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.