From h to p Efficiently: Selecting the Optimal Spectral/ Discretisation in Three Dimensions
There is a growing interest in high-order finite and spectral/ element methods using continuous and discontinuous Galerkin formulations. In this paper we investigate the effect of - and -type refinement on the relationship between runtime performance and solution accuracy. The broad spectrum of possible domain discretisations makes establishing a performance-optimal selection non-trivial. Through comparing the runtime of different implementations...