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Re: [HTCondor-users] Filling pool breadth-first with partitionable slots

Hi Jason,

you can use an _expression_ like:


on your negotiator to resort the slots after the match, basically it means 'if RemoteOwner =?= UNDEFINED' equals to 1 if the slot has no RemoteOwner (in other words slot is free).

For the next part, in the slot ranking the higher is the better so the higher the slot ID the higher the ranking which means if you run 8 core machines for ex. slot8 on all machines gets a job, then slot 7 on all machines and so on ...

You can put some more logic in the sort statement of course ther might be examples in the manual or on the list for that ...

best regards

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Von: "Jason Liu" <jason.liu@xxxxxxxxxxxxx>
An: "htcondor-users" <htcondor-users@xxxxxxxxxxx>
Gesendet: Montag, 31. Oktober 2016 05:27:07
Betreff: [HTCondor-users] Filling pool breadth-first with partitionable slots


We have a need to fill our HTCondor pool breadth-first to improve IO efficiency.

We are using p-slots in our pool, since our jobs come in all sorts of shapes and sizes.

I am a bit lost as to how to configure a pool to fill breadth-first. By default it seems HTCondor fills depth-first. 

After some research, I have found this article:


which shows a way to fill the pool breadth-first. However the solution presented has one major drawback for p-slots, which is that each machine can only match one new job per negotiation cycle. 

We are looking for a way to fill our pool breadth first, without the limitation of only being able to match one job per negotiation cycle per machine. Does HTCondor have a way to overcome this?

We are using HTCondor 8.4.7. In addition, we are also using concurrency limits and consumption policy is enabled on all machines in the pool. 

Any help would be greatly appreciated.


Kind Regards,

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