Abstract
We present a new code for astrophysical magnetohydrodynamics specifically designed and optimized for high performance and scaling on modern and future supercomputers. We describe a novel hybrid OpenMP/MPI programming model that emerged from a collaboration between Cray, Inc. and the University of Minnesota. This design utilizes MPI-RMA optimized for thread scaling, which allows the code to run extremely efficiently at very high thread counts ideal for the latest generation of multi-core and many-core architectures. Such performance characteristics are needed in the era of "exascale" computing. We describe and demonstrate our high-performance design in detail with the intent that it may be used as a model for other, future astrophysical codes intended for applications demanding exceptional performance.
Original language | English (US) |
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Article number | 23 |
Journal | Astrophysical Journal, Supplement Series |
Volume | 228 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2017 |
Bibliographical note
Publisher Copyright:© 2017. The American Astronomical Society. All rights reserved..
Keywords
- magnetohydrodynamics (MHD)
- methods: numerical