Articles | Volume 9, issue 8
Geosci. Model Dev., 9, 2881–2892, 2016
https://doi.org/10.5194/gmd-9-2881-2016
Geosci. Model Dev., 9, 2881–2892, 2016
https://doi.org/10.5194/gmd-9-2881-2016

Development and technical paper 26 Aug 2016

Development and technical paper | 26 Aug 2016

Asynchronous communication in spectral-element and discontinuous Galerkin methods for atmospheric dynamics – a case study using the High-Order Methods Modeling Environment (HOMME-homme_dg_branch)

Benjamin F. Jamroz and Robert Klöfkorn

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Short summary
The scalability of computational applications on current and next-generation supercomputers is increasingly limited by the cost of inter-process communication. We implement communication hiding data exchange in the High-Order Methods Modeling Environment (HOMME) for the time integration of the hydrostatic fluid equations using both the spectral-element and discontinuous Galerkin methods. The presented approach produces significant performance and scalability gains in large-scale simulations.