05/20/2026 - Foreign Nationals
05/30/2026 - US Citizens
05/20/2026 - Foreign Nationals
05/30/2026 - US Citizens
The Nek project has a long history dating to the mid 1980s and is still one of the main applications on current supercomputers with its open-source spectral element codes Nek5000, NekCEM, and NekRS. As part of many important HPC programs, such as the ECP or JUREAP, Nek codes have defined many current performance expectations and blueprints for cutting-edge CFD on current supercomputers.
Starting at Argonne in 2010, the Nek User Meeting has been held quasi-annually with meetings in Zurich (2012), Thessaloniki (2014), Argonne (2015), MIT (2016), UIUC (2017), Univ. of Florida (2018), Julich Supercomputing Center (2024), Commonwealth University (2025), and Argonne (2026). There are typically 30-50 attendees and 80 percent of those give presentations on current projects and developments. The meeting includes updates on the software, which is used by over 500 researchers world wide in national laboratories, industry and universities, for a variety of energy-related applications.
The attendees include developers as well as leading edge users who are pushing the scope of the software to cover new applications. Recent advances include compressible combustion, magnetohydrodynamics for fusion breeder blanket design, and radiation transport for molten-salt reactor design.
In addition to user presentations and tutorials by developers, we anticipate a technical presentation by NVIDIA.