Efficient matrix-free implementation of discontinuous Galerkin methods for compressible flow problems
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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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Klöfkorn, R.
(2015).
Efficient matrix-free implementation of discontinuous Galerkin methods for compressible flow problems.
Proceedings Of The Conference Algoritmy, , 11-21.
Retrieved from http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/algoritmy/article/view/311/215
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