Efficient matrix-free implementation of discontinuous Galerkin methods for compressible flow problems

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Robert Klöfkorn

Abstract

We discuss the matrix-free implementation of Discontinuous Galerkin methods for compressible flow problems, i.e. the compressible Navier-Stokes equations. For the spatial discretization the CDG2 method and for temporal discretization an explicit Runge-Kutta method is used. For the presented matrix-free approach we discuss asynchronous communication, shared memory parallelization, and automated code generation to increase the  oating point performance of the code.

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How to Cite
KLÖFKORN, Robert. Efficient matrix-free implementation of discontinuous Galerkin methods for compressible flow problems. Proceedings of the Conference Algoritmy, [S.l.], p. 11-21, nov. 2015. Available at: <http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/algoritmy/article/view/311>. Date accessed: 20 oct. 2017.
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