WOMBAT: A Scalable and High-performance Astrophysical Magnetohydrodynamics Code

P. J. Mendygral, N. Radcliffe, K. Kandalla, D. Porter, B. J. O'Neill, C. Nolting, P. Edmon, J. M.F. Donnert, T. W. Jones

Research output: Contribution to journalArticle

14 Scopus citations


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 languageEnglish (US)
Article number23
JournalAstrophysical Journal, Supplement Series
Issue number2
StatePublished - Feb 2017


  • magnetohydrodynamics (MHD)
  • methods: numerical

Fingerprint Dive into the research topics of 'WOMBAT: A Scalable and High-performance Astrophysical Magnetohydrodynamics Code'. Together they form a unique fingerprint.

  • Cite this

    Mendygral, P. J., Radcliffe, N., Kandalla, K., Porter, D., O'Neill, B. J., Nolting, C., Edmon, P., Donnert, J. M. F., & Jones, T. W. (2017). WOMBAT: A Scalable and High-performance Astrophysical Magnetohydrodynamics Code. Astrophysical Journal, Supplement Series, 228(2), [23]. https://doi.org/10.3847/1538-4365/aa5b9c