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Re: [HTCondor-users] Rank expression in submit-file



Werner:

In the negotiator, the NEGOTIATOR_PRE_JOB_RANK has more power than the job's RANK _expression_.  The default NEGOTIATATOR_PRE_JOB_RANK _expression_ tries to minimize fragmentation of a pool.  I suspect this is why your job RANK isn't having the effect you want.  Try changing this knob in your negotiator, and I think you'll see the policy you need.


-greg

On 12/14/20 9:02 AM, Thomas Hartmann wrote:
Hi Werner,

are resources available with the desired kflops value?
If only slots on weaker (kflops) nodes are available, condor will broker your jobs to these to get them running.

If you want to really run only on nodes with a minimum number of kflops, you can add this as a minimum in the job requirements 9and combine them with the rank _expression_ to aim for the highest performing slots within your selection).

Cheers,
  Thomas

On 10/12/2020 21.24, Werner Koppelstätter wrote:
Hi all,

I tried to use the rank _expression_ to define the best matching slot for a job.
I added "Rank = kflops" to my submit-file as described in the HTCondor Manual, but nothing changed.

My jobs were assigned to a slow machine and filled all the slots. Then all the slots of a next machine were filled.
How can I adjust the order of the slots?

Thanks in advance,
Werner

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