Re: [Condor-users] Copying job attrs into slot attrs

[Ian Chesal <ICHESAL@xxxxxxxxxx>]

> Is there a way for copying a Job attribute over to the slot
> that it is running?

You bet. STARTD_EXPRS is what you want. See:

http://www.cs.wisc.edu/condor/manual/v7.2/3_3Configuration.html#16323

> I'm trying to configure a job policy that depends on how many
> slots are using a local resource.
>
> I've looked at STARTD_SLOT_ATTRS but I can't see a way of
> updating a slot attribute without using START_CRON_ etc.
> dynamic updates. The problem here is that I then depend on
> update intervals I might miss an update.
>
> By copying a job attribute over the policy can then simply
> count how many jobs on that machine are using a resource.
> Any thoughts?

You'll have to look at the value of this attribute for each slot. Each slot will get a unique instance of this attribute. You can cross-advertise these values in each slot using STARTD_SLOT_EXPRS. This makes a value that's slot specific appear in every other slot, prefixed with the string "slot#_".

So if you had:

STARTD_EXPRS = ClusterID
STARTD_SLOT_EXPRS = ClusterID

Then on a 2 slot machine, Slot 1 would have:

        ClusterID = 8908
        slot2_ClusterID = 123

And Slot 2 would have:

        ClusterID = 123
        slot1_ClusterID = 8908

- Ian

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