[Condor-users] How to limit max. jobs from user

[Kwan Wing Keung <hcxckwk@xxxxxxxxxxxx>]

Dear All,

Recently we have established a CONDOR pool of Windows XP PCs to supplement 
our HPC services that are running in a Linux cluster.

For most of the users we handled, the migration is extremely smooth.
However it is so smooth that some of them are now addicted to submission 
of huge amount of jobs routinely.  In the old days they performed 
simulations at every 0.5 interval, now they perform simulations at every 
0.1 interval.  A typcial submission is at around 300+ sub-jobs (just a 
single statement "queue 300" will do), each sub-job taking 5-10 hours of 
execution.

My questions are therefore:

(1) Is there any way to limit the maximum total of sub-jobs running per 
user?

(2) Is there any way to limit the maximum sub-process that a single 
submission can spawn out?

(3) Is there any way, as the Condor administrator, to just allows the 
execution for the first 20 sub-jobs from user A (i.e. holding up all other 
sub-jobs of the same "cluster"), then allows the first 20-sub-jobs from 
user B to start?

Thanks in advance.

W.K. Kwan
Computer Centre
University of Hong Kong