Its "Open MPI"

doc.zih.tu-dresden.de/docs/index.md

doc.zih.tu-dresden.de/docs/jobs_and_resources/mpi_issues.md

doc.zih.tu-dresden.de/docs/jobs_and_resources/rome_nodes.md

doc.zih.tu-dresden.de/docs/jobs_and_resources/sd_flex.md

doc.zih.tu-dresden.de/docs/software/data_analytics_with_r.md

doc.zih.tu-dresden.de/docs/software/distributed_training.md

doc.zih.tu-dresden.de/docs/software/gpu_programming.md

...zih.tu-dresden.de/docs/software/misc/spec_nvhpc-alpha.cfg

doc.zih.tu-dresden.de/docs/software/misc/spec_nvhpc-ppc.cfg

...h.tu-dresden.de/docs/software/singularity_recipe_hints.md

doc.zih.tu-dresden.de/wordlist.aspell