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!)
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
Click the links below to view/download presentations.
| Tuesday 6 October | |
| 10:30-11:30 | Registration is open |
| 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 presentation Marie Skepö, Chair of User Support Advisory Committee and other members of USAC |
| 16:30-17:00 | Arrhenius technical presentation: HPC partition, Persistent Service 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 | Recommendations from support 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: Simulating the Earth system with EC-Earth Joakim Kjellsson, Professor of Meteorology at SMHI dIon: A self-supervised transformer for tandem mass spectra Lukas Käll, Professor of Computational Proteomics at KTH Royal Institute of Technology Small cells on large GPUs: Scaling small cell calculations efficiently on modern GPUs Florian Trybel, Associate Professor in Theoretical Physics at Linköping University |
| 12:00-12:45 | Outlook and goal setting Erik Lindahl |
| 12:45-13:45 | Closing L U N C H |