[Condor-users] How to run jobs ONLY when no users are logged in?

[Bruce Beckles <mbb10@xxxxxxxxx>]

Hi everyone -

	I would like to set up some 'execute-only' machines to run Condor
jobs ONLY when no users are logged in to the machines, i.e. -

- Jobs should only start when there is no one logged into the machine, NOT
  if someone is logged in but hasn't generated any keyboard or mouse
  activity for a while.

- As soon as a user logs out, the machine should be available for Condor
  jobs (i.e. it shouldn't wait around until a certain amount of
  KeyboardIdle time has passed).

Is this possible?  I've looked at the manual and various example
configuration files, but I can't see how to do this.  I can set machines
to require a certain amount of KeyboardIdle time before they will run a
job, but that is not terribly useful in this context...

	Thanks,

	  Bruce

--
Bruce Beckles,
e-Science Specialist,
University of Cambridge Computing Service.