Evaluating Performance Overheads of HPX/Kokkos Applications in Singularity Containers on Supercomputer Fugaku and a Hybrid CPU-GPU Cluster

Containerization can improve reproducibility of HPC applications, but may introduce performance overheads. This study evaluates the performance impact of running the HPX/Kokkos-based astrophysics application Octo-Tiger in Singularity containers on a homogeneous CPU-based supercomputer (Fugaku) and a heterogeneous CPU-GPU cluster (DeepBayou).