  As the complexity and size of challenges in science and engineering are
continually increasing, it is highly important that applications are able to
scale strongly to very large numbers of cores (>100,000 cores) to enable HPC
systems to be utilised efficiently. This paper presents results of strong
scaling tests performed with an MPI only and a hybrid MPI + OpenMP version of
the Lattice QCD application BQCD on the European Tier-0 system SuperMUC at LRZ.
