The NumPEx program is a 6-year project which started in 2023. This French Priority Research Programs and Equipment (PEPR) initiative for Exascale in France gathers more than 500 researchers and engineers nationwide to contribute to the European Exascale software stack, particularly in the Jules Verne project, aiming to deliver the second European Exascale system by 2025. Neovia Innovation is notably involved in the programme’s European and international collaboration activities, the International Post-Exascale (InPEx) project.