Meet the three GCS centres, the High-Performance Computing Center Stuttgart (HLRS), Jülich Supercomputing Centre (JSC), and Leibniz Supercomputing Centre Garching (LRZ) at SC19 in Denver, Colorado (USA). The international conference for high-performance computing, networking, storage, and analysis, this year held from Nov. 17–22, 2019 at the Colorado Convention Center, is the annually recurring premier event for the global high-performance computing (HPC) community.