During the ICON workshops, developers collaborated on site to focus on scientific issues and on infrastructure respectively computer specific aspects of the ICON model code. At the beginning, the participating institutions gave an overview of the current state of their work in order to jointly plan and coordinate the further work steps. Subsequently, several programmers worked in different so-called "coding sprints"   cross-institution working groups   on specific tasks. The co-jointly work achieved the results much faster and more efficiently than work by individual programmers at their own institutes.

The subsequent ICON infrastructure meeting was devoted to classic HPC infrastructure topics. The DKRZ is very much involved in the technical development of the ICON infrastructure, such as the optimization of the code, the parallel input and output, the development of software components or libraries for MPI communication, the coupling of atmosphere and ocean or the visualization of model results.

The two ICON meetings proved that successful and efficient development of the ICON code requires regular working meetings. All working groups delivered concrete results including the next work steps and corresponding responsibilities.