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

Yushan Wang, Marc Baboulin, Karl Rupp, Oliver Le Maitre, Yann Fraigneau
Universite Paris-Sud, France
22nd High Performance Computing Symposium (HPC 2014), 2014


   title={Solving 3D incompressible Navier-Stokes equations on hybrid CPU/GPU systems},

   author={Wang, Yushan and Baboulin, Marc and Rupp, Karl and Le Ma{i}tre, Oliver and Fraigneau, Yann},



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This paper describes 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 Helmholtzlike and Poisson equations for which we describe efficient solvers. As an extension of our previous paper [1], this paper proposes a new implementation that takes advantage of GPU accelerators. We present numerical experiments on a current hybrid machine.
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