Re: [HTCondor-users] Only Match Machines Idle for > N Seconds

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 11/4/2015 4:05 PM, William Strecker-Kellogg wrote:
> Hi,
>
> I wanted to restrict jobs to only match machines that have been quiet for more
> than 5 minutes, by putting
>
> Requirements = (CurrentTime - EnteredCurrentState > 300)
>
> in my job description. Interestingly, the match is made successfully, but it
> looks like the expression is evaluated again once the match is made and after
> EnteredCurrentState is updated, rendering it false and the job fails to start:
>
> 11/04/15 16:49:51 (pid:14409) slot3: Job Requirements check failed!
>
> Does anybody have an idea of a way to accomplish this that would work?

I think the issue is your slot is going from Unclaimed state to Matched 
state as soon as the negotiator makes a match.  Then when the schedd 
comes along to claim the slot, the Requirements expression is false 
because Match state was entered less than 5 minutes ago.

My guess is your expression above could be easily made to if you 
inserted the following into the condor_config on your central manager 
(and did a reconfig):

# This knob must be set in the negotiator's configuration. It prevents
# slots from going into matched state.
NEGOTIATOR_INFORM_STARTD = false


I have faith the above will work for you since what you want to do is 
just a simpler case of the HOWTO at
https://htcondor-wiki.cs.wisc.edu/index.cgi/wiki?p=HowToMatchMulticoreAfterDrain

best regards,
Todd

> Thanks,
> Will
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--
Todd Tannenbaum <tannenba@xxxxxxxxxxx> University of Wisconsin-Madison
Center for High Throughput Computing   Department of Computer Sciences
HTCondor Technical Lead                1210 W. Dayton St. Rm #4257
Phone: (608) 263-7132                  Madison, WI 53706-1685