...
The hostname and port information displayed after the server startup is needed later (see "Server::start -host ..."). The "-power" flag is needed due to license reasons. The "-collab" flag is needed if you your local and remote user name differ. "-collab" allows anyone to attach to your server, but do not worry: our system forbids others to access your allocated exclusive compute nodes (Beside you only root can ssh there.).
Locally, the StarCCM client requires a password-less SSH connection, however du to security reasons NHR@ZIB allows password protected ssh keys only. To resolve this conflict on Linux/Mac systems run a ssh-agent in the background:
...