[HTCondor-users] Desktop configuration: startd vs schedd.

[Renaud Guezennec <renaud@xxxxxxx>]

Hi all,

Here, this is our context:
-We have 2 kinds of machines: cluster and workstation. Users are 
submitting jobs from their workstations. Due to our small number of 
cluster, we choosed to allows workstations to compute jobs.

Our jobs take a lot of memory and the workstation may swap all the time. 
We did implement a requirement for memory usage (given the parameter 
memory in job submission).
But the parameter seems to check the machine memory and not the 
available memory. Is there a way to change that ?

We would like to amend our START expression, to forbid job's starting 
while the "current" user of the machine is submitting many jobs or when 
machine has jobs in its queue schedd).
Here, the chain of events that happens:

1/ from Workstation 1 , user 1  submits 400 jobs to ht condor
2/ ht condor starts (the first) 20 jobs from user1 on computers (cluster 
and workstation).
3/ workstation 1 gets jobs from htcondor (from user1 or someone else).
4/ workstation 1 starts to swap because the job require the whole memory 
of the machine.
5/ Workstation and all condor daemons  stop working. So, jobs from user 
1 can not be computed any more.

I tried something like this:
START    = ( ( $(CPUIdle) || (State != "Unclaimed" && State != "Owner")) 
&& JobsSubmitted==0 && TotalIdleJobs == 0 && TotalRunningJobs == 0)

but as I read in the documentation, those fields could not be used into 
the START expression

Thanks

Regards