P. Zaspel (University Bonn)

Two-Phase flows on massively parallel multi-GPU clusters

We present a fully multi-GPU-based double-precision solver for the three-dimensional two-phase incompressible Navier-Stokes equations. Some technical details are given. Furthermore, we show performance analysis results with 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 also observe profound strong and weak scaling on a multi-GPU cluster.