[slurm-users] how to restrict jobs

[navin srivastava]

Thanks Micheal.

Actually one application license are based on node and we have 4 Node
license( not a fix node). we have several nodes but when job lands on any 4
random nodes it runs on those nodes only. After that it fails if it goes to
other nodes.

can we define a custom variable and set it on the node level and when user
submit it will pass that variable and then job will and onto those specific
nodes?
i do not want to create a separate partition.

is there any way to achieve this by any other method?

Regards
Navin.


Regards
Navin.

On Tue, May 5, 2020 at 7:46 PM Renfro, Michael <Renfro at tntech.edu> wrote:

> Haven’t done it yet myself, but it’s on my todo list.
>
> But I’d assume that if you use the FlexLM or RLM parts of that
> documentation, that Slurm would query the remote license server
> periodically and hold the job until the necessary licenses were available.
>
> > On May 5, 2020, at 8:37 AM, navin srivastava <navin.altair at gmail.com>
> wrote:
> >
> > External Email Warning
> > This email originated from outside the university. Please use caution
> when opening attachments, clicking links, or responding to requests.
> > Thanks Michael,
> >
> > yes i have gone through but the licenses are remote license and it will
> be used by outside as well not only in slurm.
> > so basically i am interested to know how we can update the database
> dynamically to get the exact value at that point of time.
> > i mean query the license server and update the database accordingly.
> does slurm automatically updated the value based on usage?
> >
> >
> > Regards
> > Navin.
> >
> >
> > On Tue, May 5, 2020 at 7:00 PM Renfro, Michael <Renfro at tntech.edu>
> wrote:
> > Have you seen https://slurm.schedmd.com/licenses.html already? If the
> software is just for use inside the cluster, one Licenses= line in
> slurm.conf plus users submitting with the -L flag should suffice. Should be
> able to set that license value is 4 if it’s licensed per node and you can
> run up to 4 jobs simultaneously, or 4*NCPUS if it’s licensed per CPU, or 1
> if it’s a single license good for one run from 1-4 nodes.
> >
> > There are also options to query a FlexLM or RLM server for license
> management.
> >
> > --
> > Mike Renfro, PhD / HPC Systems Administrator, Information Technology
> Services
> > 931 372-3601     / Tennessee Tech University
> >
> > > On May 5, 2020, at 7:54 AM, navin srivastava <navin.altair at gmail.com>
> wrote:
> > >
> > > Hi Team,
> > >
> > > we have an application whose licenses is limited .it scales upto 4
> nodes(~80 cores).
> > > so if 4 nodes are full, in 5th node job used to get fail.
> > > we want to put a restriction so that the application can't go for the
> execution beyond the 4 nodes and fail it should be in queue state.
> > > i do not want to keep a separate partition to achieve this config.is
> there a way to achieve this scenario using some dynamic resource which can
> call the license variable on the fly and if it is reached it should keep
> the job in queue.
> > >
> > > Regards
> > > Navin.
> > >
> > >
> > >
> >
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.schedmd.com/pipermail/slurm-users/attachments/20200506/85cdcc17/attachment.htm>