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<p>Coordinator permissions from the man pages:</p>
<blockquote>
<p>coordinator<br>
A special privileged user, usually an account manager, that can
add users or sub-accounts to the account they are coordinator
over. This should be a trusted person since they can change
limits on account and user associations, as well as cancel,
requeue or reassign accounts of jobs inside their realm.</p>
</blockquote>
<p>So, I read that as it manages accounts in slurmdb with minimal
access to the jobs themselves. So you would be stuck with
cancel/requeue. I see no mention of hold, but if that is one of
the permissions, I would say, yes, our approach does what you want
within the limits of what the default permissions of a coordinator
can do.</p>
<p><br>
</p>
<p>Of course, that still may not work if there are other
accounts/partitions/users with higher priority jobs than User B.
Specifically if those jobs can use the same resources A's jobs are
running on.</p>
<p><br>
</p>
<p>Brian Andrus<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 5/17/2023 10:49 AM, Groner, Rob
wrote:<br>
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I'm not sure what you mean by "if they have the permissions".
I'm talking about someone who is specifically designated as
"coordinator" of an account in slurm. With that designation,
and no other admin level changes, I'm not aware that they can
directly change the priority of jobs associated with the
account.</div>
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If you're talking about additional permissions or admin
levels...we're not looking into that as an option. We want to
purely use the coordinator role to have them manipulate stuff.</div>
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<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b>
slurm-users <a class="moz-txt-link-rfc2396E" href="mailto:slurm-users-bounces@lists.schedmd.com"><slurm-users-bounces@lists.schedmd.com></a> on
behalf of Brian Andrus <a class="moz-txt-link-rfc2396E" href="mailto:toomuchit@gmail.com"><toomuchit@gmail.com></a><br>
<b>Sent:</b> Wednesday, May 17, 2023 12:58 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:slurm-users@lists.schedmd.com">slurm-users@lists.schedmd.com</a>
<a class="moz-txt-link-rfc2396E" href="mailto:slurm-users@lists.schedmd.com"><slurm-users@lists.schedmd.com></a><br>
<b>Subject:</b> Re: [slurm-users] On the ability of
coordinators</font>
<div> </div>
</div>
<div>
<p>If they have the permissions, you can just raise the priority
of user B's jobs to be higher than whatever A's currently are.
Then they will run next.</p>
<p>That will work if you are able to wait for some jobs to
finish and you can 'skip the line' for the priority jobs.</p>
<p>If you need to preempt running jobs, that would take a bit
more effort to set up, but is an alternative.</p>
<p><br>
</p>
<p>Brian Andrus</p>
<p><br>
</p>
<div class="x_moz-cite-prefix">On 5/17/2023 6:40 AM, Groner, Rob
wrote:<br>
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I was asked to see if coordinators could do anything in this
scenario:</div>
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<ul
data-editing-info="{"orderedStyleType":1,"unorderedStyleType":1}">
<li style="list-style-type:disc">Within the account that
they coordinated, User A submitted 1000s of jobs and
left for the day.</li>
<li style="list-style-type:disc">Within the same account,
User B wanted to run a few jobs really quickly. Once
submitted, his jobs were of course behind User A's jobs.</li>
<li style="list-style-type:disc">The coordinator wanted to
see the results of User B's runs.</li>
</ul>
<div>Reading the docs and doing some experiments, here is
what I determined:</div>
<div>
<ul
data-editing-info="{"orderedStyleType":1,"unorderedStyleType":1}">
<li style="list-style-type:disc">The coordinator could
put a hold on all of User A's jobs in the pending
queue. This won't affect any jobs User A has that
aren't tied to the coordinated account.</li>
<li style="list-style-type:disc">With User A's jobs
held, then User B's jobs would be next to run.</li>
<li style="list-style-type:disc">If the coordinator was
particularly impatient, he could scancel User A's
currently running jobs so that User B's jobs
immediately started.</li>
<li style="list-style-type:disc">The coordinator would
need to remember to release the held jobs, or put them
in a uhold so that User A could release them
eventually.</li>
</ul>
<div>It seems like the easiest way for the coordinator to
elevate User B's jobs to the top of the queue would be
if he could "scontrol top" those jobs. But my testing
indicates that the coordinator doesn't have that
permission. Is there some reason that a coordinator
can't use "scontrol top" to change the priority of jobs
within the account that he coordinates?</div>
</div>
<div><br>
</div>
<div>Thanks.</div>
<div><br>
</div>
<div>Rob</div>
<div><br>
</div>
</div>
</blockquote>
</div>
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