Re: [HTCondor-users] Desktop Policy renders workstations unusable

["Beyer, Christoph" <christoph.beyer@xxxxxxx>]

Hi,

I would think that the START expression should be something like 

START = KeyboardIdle > 15 * $(MINUTE)

Can you check the IS_OWNER state on the machines that are actually used interactively - it should be 'true' if that's not the case you nedd to investigate why 

I think the preempt expression should involve something like: 

PREEMPTION_REQUIREMent = IS_OWNER == true

That is only out of the top of my head and is probably just something you should consider to look after using 'condor_config_val -dump | grep <...>'  

best
christoph

-- 
Christoph Beyer
DESY Hamburg
IT-Department

Notkestr. 85
Building 02b, Room 009
22607 Hamburg

phone:+49-(0)40-8998-2317
mail: christoph.beyer@xxxxxxx

----- UrsprÃngliche Mail -----
Von: "Alexander Neuwirth" <a_neuw01@xxxxxxxxxxxxxxx>
An: "htcondor-users" <htcondor-users@xxxxxxxxxxx>
Gesendet: Freitag, 26. Januar 2024 12:40:48
Betreff: [HTCondor-users] Desktop Policy renders workstations unusable

Dear HTCondor-Team/Users,

We use HTCondor at our institute but keep running into conflicts between 
machine owners and HTC users. It is a recurring problem that 
workstations become unusably slow due to different kinds of resource 
exhaustion (CPU, IO, memory, ...), when working on HTC jobs. We are 
using the default DESKTOP policy, but jobs are apparently not preempted 
by keyboard use or other user actions. Ideally, we'd like it to preempt 
jobs on any indication of non-HTC activity on the machine, preferably 
including SSH connections. Are there recommendations for such a 
configuration?

One ugly workaround our users use to "free" their PCs from Condor is 
commands akin to `watch -n1 condor_vacate`, but this should not be 
necessary with the default desktop policy in my opinion. Is this a known 
problem or just some configuration error on our side? You can find our 
config files attached.

Best,
Alexander

-- 
UniversitÃt MÃnster
Institut fÃr Theoretische Physik

Wilhelm-Klemm-StraÃe 9
48149 MÃnster

Tel: +49 251 83-34527
E-Mail:itpadmins@xxxxxxxxxxxxxxx
Web:https://www.uni-muenster.de/Physik.TP/


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