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ExaHyPE: An Exascale Hyperbolic PDE Engine
ExaHyPE is a hyperbolic PDE engine capable of solving systems of first order hyperbolic PDEs. The project provides a space-tree discretization of the computational domain, higher-order ADER DG schemes and a-posteriori
subcell limiters. The two main applications currently tackled with this engine are long-range seismic risk assessment and the search for gravitational waves emitted by binary neutron stars. The primary goal of the project was to enable medium-sized interdisciplinary research teams to realise extreme-scale simulations quickly. Users of the engine write only their own application specific code and benefit imme-
diately from the efficient adaptive mesh refinement algorithms and from the numerical schemes built into ExaHyPE. We provide several examples showing
how few lines of code must be written to add new hyperbolic PDE systems into the engine. Further, we present a case study in which nonhydrostatic free surface flows were implemented in ExaHyPE. This PDE system does not
a-priori fit the ExaHyPE framework as it requires the solution of an elliptic equation. Nevertheless, the application could be realised within the engine quickly.
This is joint work with groups from Frankfurt’s FIAS, the University of Trento, Ludwig-Maximilians-University Munich and the University of Durham.
subcell limiters. The two main applications currently tackled with this engine are long-range seismic risk assessment and the search for gravitational waves emitted by binary neutron stars. The primary goal of the project was to enable medium-sized interdisciplinary research teams to realise extreme-scale simulations quickly. Users of the engine write only their own application specific code and benefit imme-
diately from the efficient adaptive mesh refinement algorithms and from the numerical schemes built into ExaHyPE. We provide several examples showing
how few lines of code must be written to add new hyperbolic PDE systems into the engine. Further, we present a case study in which nonhydrostatic free surface flows were implemented in ExaHyPE. This PDE system does not
a-priori fit the ExaHyPE framework as it requires the solution of an elliptic equation. Nevertheless, the application could be realised within the engine quickly.
This is joint work with groups from Frankfurt’s FIAS, the University of Trento, Ludwig-Maximilians-University Munich and the University of Durham.
