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Impact of asynchronism on GPU accelerated parallel iterative computations

Sylvain Contassot-Vivier, Thomas Jost, Stephane Vialle
Loria, University Henri Poincare, Nancy, France
Applied Parallel and Scientific Computing, Lecture Notes in Computer Science, Volume 7133/2012, 43-53, 2012

@article{contassot2012impact,

   title={Impact of asynchronism on GPU accelerated parallel iterative computations},

   author={Contassot-Vivier, S. and Jost, T. and Vialle, S.},

   journal={Applied Parallel and Scientific Computing},

   pages={43–53},

   year={2012},

   publisher={Springer}

}

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We study the impact of asynchronism on parallel iterative algorithms in the particular context of local clusters of workstations including GPUs. The application test is a classical PDE problem of advection-diffusion-reaction in 3D. We propose an asynchronous version of a previously developed PDE solver using GPUs for the inner computations. The algorithm is tested with two kinds of clusters, a homogeneous one and a heterogeneous one (with different CPUs and GPUs).
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