Efficient Matrix-free Implementation of Discontinuous Galerkin Methods for Compressible Flow Problems
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چکیده
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 floating point performance of the code.
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تاریخ انتشار 2012