Hosts and Users
Submit Host node that is allowed to submit jobs (qsub) and query its
Exec Host node that is allowed to run (and submit) jobs
Admin Host node from which admin commands may be issued
Master Host node controlling all SGE activity, collecting status
information, keeping access control lists etc.
A certain host can have any mixture of the roles above
Administrator user that is allowed to fully control SGE
Operator user with admin privileges, who is not allowed to
change the queue configuration
Owner user that is allowed to suspend jobs in queues he owns
User can manipulate only his own jobs