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- research-articleNovember 2022
Optimization of full-core reactor simulations on summit
- Misun Min,
- Yu-Hsiang Lan,
- Paul Fischer,
- Elia Merzari,
- Stefan Kerkemeier,
- Malachi Phillips,
- Thilina Rathnayake,
- April Novak,
- Derek Gaston,
- Noel Chalmers,
- Tim Warburton
SC '22: Proceedings of the International Conference on High Performance Computing, Networking, Storage and AnalysisNovember 2022, Article No.: 74, pp 1–11Nek5000/RS, a highly-performant open-source spectral element code, has recently achieved an unprecedented milestone in the simulation of nuclear reactors: the first full core computational fluid dynamics simulations of reactor cores, including pebble ...
- research-articleJanuary 2022
Performance tuning of the Helmholtz matrix-vector product kernel in the computational fluid dynamics solver Nek5000/RS for the A64FX processor
HPCAsia 2022 Workshop: International Conference on High Performance Computing in Asia-Pacific Region WorkshopsJanuary 2022, pp 49–59https://doi.org/10.1145/3503470.3503476Nek5000/RS is an open source computational fluid dynamics solver based on the spectral element method. One of the important kernel of the Nek5000/RS is called “axhelm”, which computes the Helmholtz matrix-vector product. In this paper, we have ...
- research-articleApril 2016
On the Strong Scaling of the Spectral Element Solver Nek5000 on Petascale Systems
- Nicolas Offermans,
- Oana Marin,
- Michel Schanen,
- Jing Gong,
- Paul Fischer,
- Philipp Schlatter,
- Aleks Obabko,
- Adam Peplinski,
- Maxwell Hutchinson,
- Elia Merzari
EASC '16: Proceedings of the Exascale Applications and Software Conference 2016April 2016, Article No.: 5, pp 1–10https://doi.org/10.1145/2938615.2938617The present work is targeted at performing a strong scaling study of the high-order spectral element fluid dynamics solver Nek5000. Prior studies such as [5] indicated a recommendable metric for strong scalability from a theoretical viewpoint, which we ...
