Nek5000/RS performance on advanced GPU architectures
The authors explore performance scalability of the open-source thermal-fluids code, NekRS, on the U.S. Department of Energy's leadership computers, Crusher, Frontier, Summit, Perlmutter, and Polaris. Particular attention is given to analyzing performance and time-to-solution at the strong-scale limit for a target efficiency of 80%, which is typical for production runs on the DOE's high-performance computing systems. Several examples of anomalous behavior are also discussed and analyzed.
Authors
- John Holmen (ORCID: https://orcid.org/0000-0002-5934-2641)
- Misun Min (ORCID: https://orcid.org/0000-0002-5646-5689)
- Paul Fischer (ORCID: https://orcid.org/0000-0002-6506-4502)
- Yu-Hsiang Lan (ORCID: https://orcid.org/0000-0002-1680-675X)
- Thilina Rathnayake
Institutions
- Argonne National Laboratory (US)
- Oak Ridge National Laboratory (US)
- University of Illinois Urbana-Champaign (US)
Publication Details
- Journal
- Frontiers in High Performance Computing
- Published
- 2025-02-21
- DOI
- https://doi.org/10.3389/fhpcp.2024.1303358
- Citations
- 1
- Primary Topic
- Parallel Computing and Optimization Techniques
- Type
- article
- Field-Weighted Citation Impact
- 2.27
Funders
- U.S. Department of Energy
- National Energy Research Scientific Computing Center
- Office of Science
- Argonne National Laboratory
- Oak Ridge National Laboratory