[slurm-users] Priority access for a group of users

[david baker]

Hi Paul, Marcus,

Thank you for your replies. Using partition priority all makes sense. I was
thinking of doing something similar with a set of nodes purchased by
another group. That is, having a private high priority partition and a
lower priority "scavenger" partition for the public. In this case scavenger
jobs will get killed when preempted.

In the present case , I did wonder if it would be possible to do something
with just a single partition -- hence my question.Your replies have
convinced me that two partitions will work -- with preemption leading to
re-queued jobs.

Best regards,
David

On Fri, Feb 15, 2019 at 3:09 PM Paul Edmon <pedmon at cfa.harvard.edu> wrote:

> Yup, PriorityTier is what we use to do exactly that here.  That said
> unless you turn on preemption jobs may still pend if there is no space.  We
> run with REQUEUE on which has worked well.
>
>
> -Paul Edmon-
>
>
> On 2/15/19 7:19 AM, Marcus Wagner wrote:
>
> Hi David,
>
> as far as I know, you can use the PriorityTier (partition parameter) to
> achieve this. According to the manpages (if I remember right) jobs from
> higher priority tier partitions have precedence over jobs from lower
> priority tier partitions, without taking the normal fairshare priority into
> consideration.
>
> Best
> Marcus
>
> On 2/15/19 10:07 AM, David Baker wrote:
>
> Hello.
>
>
> We have a small set of compute nodes owned by a group. The group has
> agreed that the rest of the HPC community can use these nodes providing
> that they (the owners) can always have priority access to the nodes. The
> four nodes are well provisioned (1 TByte memory each plus 2 GRID K2
> graphics cards) and so there is no need to worry about preemption. In fact
> I'm happy for the nodes to be used as well as possible by all users. It's
> just that jobs from the owners must take priority if resources are scarce.
>
>
> What is the best way to achieve the above in slurm? I'm planning to place
> the nodes in their own partition. The node owners will have priority access
> to the nodes in that partition, but will have no advantage when submitting
> jobs to the public resources. Does anyone please have any ideas how to deal
> with this?
>
>
> Best regards,
>
> David
>
>
>
> --
> Marcus Wagner, Dipl.-Inf.
>
> IT Center
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>
>
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