MeluXina-AI to Go Live at the End of 2026 — Multi-Exaflop GPU Performance for the Grand Duchy

MeluXina-AI, Luxembourg's next-generation AI supercomputer, is scheduled to go live at the end of 2026. The system, hosted in two Tier IV-certified data centres operated by LuxProvide, will deliver multi-exaflop performance in AI-relevant workloads via GPU-AI accelerators — a meaningful step up from the original MeluXina, which has been operating since 2021.

The numbers

Total investment is €112 million, equally shared between the EuroHPC Joint Undertaking — the EU's high-performance computing partnership — and the Luxembourg State. Around 50% of the system's compute capacity is reserved for the EuroHPC network and other European users (academic, public-sector, SME); the other 50% is for national use, accessible to Luxembourg-based researchers, public bodies and businesses including SMEs through a structured access programme.

What it does

MeluXina-AI is purpose-built for AI training and inference — large-language-model fine-tuning, generative-AI development, scientific simulation accelerated by ML, and the broad spectrum of workloads where GPU memory and interconnect bandwidth dominate. The architecture supports cloud-native, multi-tenant, multi-site deployment, allowing flexible allocation across use cases without the bespoke setup that characterised earlier HPC generations.

Why this matters for Luxembourg

Three reasons. First, sovereignty: a country that hosts more than €6 trillion of fund AUM cannot reasonably outsource its AI compute to non-EU jurisdictions if it wants to deploy AI in regulated workflows at scale. Second, talent: AI infrastructure is a precondition for the kind of academic and applied research that retains and attracts ML expertise. Third, SMEs: Luxembourg's SME ecosystem has been articulated by Luxinnovation as the constituency that benefits most from access to compute it could not otherwise afford or operate.

The European context

MeluXina-AI is one of seven EU AI Factories established under the European Commission's AI strategy. The factory is operated through a partnership between Luxinnovation, LuxProvide and the Ministry of the Economy. The seven-factory architecture is intended to give Europe distributed AI compute capacity that can be aggregated when needed and used independently for sovereign or sector-specific work.

The questions still open

Two. Power. AI supercomputers are the world's most compute-dense electricity consumers; Luxembourg's grid capacity, sourcing mix and the country's reliance on imports for much of its electricity all interact with the operational profile of MeluXina-AI in ways that have to be managed. And usage uptake. Past Luxembourg HPC infrastructure has been technically excellent but, in places, under-utilised by SMEs that did not know it was available. The 2026-2027 access programme will determine whether MeluXina-AI delivers on its national-use mandate.