Asynchronous Communication in Spectral Element and Discontinuous Galerkin Methods for Atmospheric Dynamics / by Benjamin F. Jamroz, Robert Klöfkorn
Series: | NCAR Technical NotesBoulder, Colo. : National Center for Atmospheric Research, 2015Content type:- text
- unmediated
- volume
- 2153-2397
- 2153-2400
Item type | Current library | Call number | Copy number | Status | Date due | Barcode | Item holds |
---|---|---|---|---|---|---|---|
REPORT | NCAR Library Mesa Lab | 03718 | 1 | Available | 50583020003855 |
2015-06
Technical Report
The scalability of computational applications on current and next generation supercomputers is increasingly limited by the cost of inter-process communication. We implement non-blocking asynchronous communication in the High-Order Methods Modeling Environment for the time-integration of the hydrostatic fluid equations using both the Spectral Element and Discontinuous Galerkin methods. This allows the overlap of computation with communication effectively hiding some of the costs of communication. A novel detail about our approach is that it provides some data movement to be performed during the asynchronous communication even in the absence of other computations. This method produces significant performance and scalability gains in large-scale simulations.