NAISS User Forum 2026
When: 6-7 October, lunch to lunch
Where: World Trade Center, Stockholm
How: Hybrid (but we prefer to meet you in person!)
Welcome to the 2026 NAISS User Forum!
Registration
Register here. The deadline for in-person participation is 7 September. If you are attending via Zoom, registration will stay open until 1 October.
Keynote speaker: Jeff Hammond, NIVIDA
Jeff Hammond is a Distinguished Engineer at NVIDIA in the data center software organisation, focused on GPU communications. He has extensive experience with the design and use of parallel programming models and scientific applications. His most notable achievements include the MPI-5 Application Binary Interface standard, development of the MPI-3 one-sided communication software ecosystem, and contributions to the NWChem quantum chemistry project. He received a PhD in Chemistry from the University of Chicago in 2009.
He will talk about high-performance communication software for GPU supercomputers and explain NCCL and NVSHMEM, including their historical context from MPI and SHMEM. The functionality and performance will be demonstrated through an example from linear algebra. Real world results from both scientific and commercial AI use cases will be described.
Programme
| Tuesday 6 October | |
| 11:30-13:00 | Welcome L U N C H |
| 13:00-13:30 | Introduction Erik Lindahl, NAISS Director |
| 13:30-15:00 | Keynote: Multi-GPU Programming in NCCL and NVSHMEM Jeff Hammond, Software Engineer, NVIDIA |
| 15:00-15:30 | C O F F E E |
| 15:30-16:00 | NAISS user support strategy Debasmita Samaddar, User Support Director |
| 16:00-16:30 | USAC section Marie Skepö, Chair of User Support Advisory Committee and other members of USAC |
| 16:30-17:00 | Arrhenius technical presentation: HPC partition, AI partition, Sensitive Data partition Andreas Johansson, Technical Director |
| 17:00-18:00 | Mingle and posters session with 11 support groups AI/ML: Viktor Rehnberg Astrophysics: Chia-Jung Hsu Bioinformatics: Marcus Lundberg CFD: Arash Banaei Climate: Hamish Struthers Computer Science: Jonas Lindemann Material Science: Johan Hellsvik Mathematics/Numerical computing: Birgitte Brydsö Molecular Dynamics: Pedro Ojeda May Quantum Chemistry: Fabrice Saintmont Training: Joachim Hein |
| 18:00-21:00 | D I N N E R |
| Wednesday 7 October | |
| 9:00-9:30 | Hands-on support presentation – strategy for your support group, what you recommend, what codes, whom to talk to, etc Torben Rasmussen, Senior Application Expert |
| 9:30-10:00 | NAISS allocations Peter Münger, Working Group Chair of National Allocations Committee (NAC) |
| 10:00-10:30 | C O F F E E |
| 10:30-12:00 | 3 x User success stories including discussions |
| 12:00-12:45 | Outlook and goal setting Erik Lindahl |
| 12:45-13:45 | Closing L U N C H |