Torstein Hoefler, ETH Torstein Hoefler’s research interests revolve around the central topic of “Performance-centric Software Development”. In the context of High-Performance Computing (HPC), one can identify three sub-branches that Torsetein is actively working on: (1) performance modeling, simulation, and optimization of large-scale parallel applications, (2) topologies, routing, and host interfaces of large-scale networks, and (3) advanced parallel programming techniques and runtime environments.