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USERS DAY 2025

Europe’s intelligence runs on HPC

Bringing the HPC Community Together

On 17 December 2025, Users Day brought together the Belgian and European HPC community in Brussels for a full day focused on high-performance computing and artificial intelligence. Hosted at the Marie-Elisabeth Belpaire Building, the event centered on the theme “Europe’s Intelligence Runs on HPC” and highlighted how advanced computing infrastructures are driving innovation in research, industry, and society. With inspiring keynotes, parallel VSC and LUMI-BE sessions, and strong community engagement, the day once again fostered collaboration and knowledge exchange across the HPC ecosystem.

Browse the recorded talks and slides from the VSC and LUMI-BE tracks below.

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UD25 Event Report

Relive the highlights of Users Day 2025 in our event report. Discover key moments from the day, including inspiring keynote sessions, in-depth parallel talks from the VSC and LUMI-BE tracks, and engaging discussions on high-performance computing and AI. Hear reflections from speakers and participants and get a sense of the strong community interaction throughout the event. Whether you joined us in Brussels or couldn’t attend, this report captures the insights, expertise, and connections that defined VSC User Day 2025.

VSC Recorded Presentations

Missed a session or want to revisit the highlights of VSC User Day 2025? Explore the recorded presentations, available as YouTube videos and downloadable PDF slides.

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Andreas Lintermann 

Jülich Supercomputing Centre

Learning from Large-Scale Computational Fluid Dynamics Simulations

Watch Recorded Presentation
PDF presentation
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Ward Poelmans

VUB

AI Factories

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PDF presentation
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Louis-Philippe Kerkhove

UGent

Algorithmic Thinking in a World of Abundant Computation: Insights from the Field

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PDF presentation
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Jan Ooghe & Ward Poelmans

VSC

Update on sofia (new Tier-1), follow-up on VSC Survey 2024 and data policies.

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PDF presentation
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Andres Algaba

VUB

LLMs Without HPC? Good Luck!

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PDF presentation
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Michel Rasquin

Cenaero

Tiering up

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PDF presentation
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    Eric Wulff

CERN

Supercharging AI with Hyperparameter Optimization and HPC

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PDF presentation

VSC Lightning Talks

Short, focused presentations showcasing innovative ideas, research insights, and practical HPC use cases from the VSC user community. Click on a title to view the PDF presentation.

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Best Lightning Talk

We extend our heartfelt congratulations to Tibo Van den Eede (KU Leuven – KULAK) for winning the Best Lightning Talk Award at VSC User Day 2025 for his presentation, “Advancing Graph Theory with the Computer.”

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Awarded Certificate

A snapshot of Tibo's well-deserved certificate awarded by VSC

LUMI Presentations

Concise presentations highlighting research and applications supported by the LUMI infrastructure. Presentation titles link to the recorded video and/or the PDF slides.

Event Gallery

A selection of moments captured during VSC User Day 2025, highlighting the sessions, speakers, and community throughout the day.

LUMI

IN COLLABORATION WITH

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