The EuroHPC Joint Undertaking (EuroHPC JU) enables researchers, institutions and companies across Europe to use cutting-edge supercomputers for science and innovation.
Through a range of access modes, applicants can choose the level of computational resources that best matches the stage of their project – from initial testing to large-scale resources for leading-edge projects.
Via its calls, EuroHPC provides access to a full fleet of high-performance European supercomputers, including LUMI, Leonardo, Jupiter, MeluXina and Deucalion. A complete list is available here.
EuroHPC JU access modes
EuroHPC JU offers several access routes, each designed to support projects at different stages — from first experiments to breakthrough, large-scale research:
- Benchmark Access – for testing application performance and behaviour on specific systems
- Development Access – smaller allocations for development, debugging and code optimisation
- Regular Access – larger-scale computational projects, both scientific and commercial
- Extreme Scale Access – high-impact, highly demanding projects requiring massive computing resources
- AI for Science and Collaborative Projects – for AI-driven initiatives from researchers, industry and the public sector, funded through EU programmes
- AI for Industrial Innovation: Playground, Fast Lane, Lage Scale Access – tailored for SMEs and start-ups looking to innovate with AI
| ACCESS MODE | Application deadlineS | Allocation period and timelines | |
|---|---|---|---|
| Benchmark Access | The first day of every month | 3 months; decision within 3 weeks of application submission | |
| Development Access | The first day of every month | 12 months; decision within 3 weeks of application submission | |
| AI for Science and Collaborative projects | 27 February; 30 April; 30 June; 31 August; 30 October; 11 December | 6 months; decision within 1 month of the application deadline | |
| Regular Access | 30 March; 4 September | 12 months; decision within 4 months of the application deadline | |
| Extreme Scale Access | 4 May; 19 October | 12 months; decision within 6 months of the application deadline |
* Note: Unlike the public grant calls of IT4Innovations, EuroHPC JU calls always close at 10:00 on the specified deadline.
Support for EuroHPC applicants and allocation holders
Applicants can take advantage of expert support through the EPICURE project, which helps with:
- code optimisation and scaling
- application performance profiling
- efficient use of HPC infrastructure
Support is provided free of charge: https://epicure-hpc.eu/support-services/
Find out more at the 12 May webinar From Code to Scale: EPICURE’s Services, Stories, and Training for EuroHPC Users, where João Barbosa from IT4Innovations will present EPICURE services – from code optimisation, profiling and scaling across European supercomputers to real-world use cases and the European HPC Application Portal.
Project consultation
Not sure which access mode is the most suitable for your project?
The IT4Innovations team can help you choose the optimal path to EuroHPC resources:
- support@it4i.cz
- ai-factories@it4i.cz (for AI Factories access modes)
Webinar for applicants
Those interested in submitting a proposal can join the webinar on 13 May: EuroHPC Access Calls – Evaluation Process, Technical Assessment and Best Practices. You will learn:
- how to prepare a successful application
- how project evaluation is conducted
- how to effectively plan the use of HPC resources
EuroHPC JU offers a flexible and widely accessible gateway to European supercomputers in 2026. Whether it is early-stage code testing, AI application development, or large-scale scientific projects, there is an access mode tailored to the specific needs of every project.