Section: New Results

Solvers for 3D incompressible Navier-Stokes equations on hybrid CPU/GPU systems

Participants : Yushan Wang, Marc Baboulin, Karl Rupp, Olivier Le Maître, Yann Fraigneau.

We developed a hybrid multicore/GPU solver for the incompressible Navier-Stokes equations with constant coefficients, discretized by the finite difference method. By applying the prediction-projection method, the Navier-Stokes equations are transformed into a combination of Helmholtz-like and Poisson equations for which we describe efficient solvers. We propose a new implementation that takes advantage of GPU accelerators. We present numerical experiments on a current hybrid machine.