The past, the present and the future of Cx at NHR@KIT and KIT

Since 2021 the German National High Performance Computing Center at Karlsruhe Institute of Technology (NHR@KIT) has been offering and advertising the possibility of running Cx workloads, including the possibility for containerised workflows, on our diverse HPC infrastructure, leveraging the customizability of the GitLab CI/CD ecosystem. In this talk we will discuss the evolution of our Cx service offer, both from the technical and user adaption point-of-view, its current status, including current and planned in-house developments to suite the demands for this service, and compare it with alternatives. We will also describe the challenges and opportunities observed by us in user engagements, which is being offered through courses, support tickets and ad-hoc collaborations and outline our plans for the future.