Physical machines with a resource scheduler that users can submit jobs to.
The machine where a submitted job runs. Part of a cluster.
A server on the compute cluster that can be anything from the OOD dashboard itself, to a shell, to the file-browser app, etc. Runs on the cluster but is not a compute-node.
A term used for when a site or institution has enough funds/personel to run the OOD login on a dedicated server and not on a login-node.
The Per User Nginx. An Nginx instance running as the user.