Hybrid MPI/OpenMP parallel strategies for a high order discontinuous Galerkin solver in aerodynamics
Résumé
The industrial demand for CFD predictions at an ever-increasing level of detail is the driving force for the development of highly accurate simulation techniques able to predict not only overall features, but also local values of the quantities of interest. At ONERA, the code Aghora is developed for the solution of complex ow systems in aerodynamics, including turbulent ows (RANS, LES, DNS). The main goal is to investigate the potential of high-order schemes based on Discontinuous Galerkin methods (DG) [1, 2] to deliver accurate solutions in this context. The downside of these methods is that they require long execution times and large memory consumptions. Designing efficient algorithms for modern multi-core architectures and developing highly-scalable parallel strategies turn out to be essential to tackle such challenges.
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