I use the following horrible little shell function to give me a reasonable list
of currently pending jobs in a partition, and the order they’re likely to run
in (as well as individual users’ priorities):
_users_waiting() {
squeue "$@" -t PD -h -O UserName | sort -u | tr -d ' ' | tr '\012' ',' | sed
's/,$//'
}
priority_in_queue() {
local users=$(_users_waiting "$@")
echo "User Fairshare"
echo "=============="
sshare -U -u "$users"
echo
echo "Pending Job Priorities"
echo "======================"
sprio "$@" -S "-y" -u "$users" -o "%.8i %9r %.8u %.8o %.8Y %.6A %.10F %.10J
%.9P %.7n %.6Q %.30T"
}
--
Tim Cutts
Scientific Computing Platform Lead
AstraZeneca
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From: Paul Edmon via slurm-users <slurm-users@lists.schedmd.com>
Date: Tuesday, 29 October 2024 at 2:09 PM
To: slurm-users@lists.schedmd.com <slurm-users@lists.schedmd.com>
Subject: [slurm-users] Re: Slurm Job Sched Priority
If you are looking to use the C API for this then showq may be a good guide:
https://github.com/fasrc/slurm_showq<https://github.com/fasrc/slurm_showq> The
-o option orders the pending queue in priority order.
If you are looking at native slurm commands, sprio can print out the current
priority breakdown of any job and filter by partition, then you can reorder
based on that. squeue also can print out current priority. You might also look
at the --priority option:
https://slurm.schedmd.com/squeue.html#OPT_priority<https://slurm.schedmd.com/squeue.html#OPT_priority>
-Paul Edmon-
On 10/29/24 9:33 AM, Bhaskar Chakraborty via slurm-users wrote:
Hello,
Is there any DS in slurmctld which portrays the dynamic relative priority of
pending jobs?
We are trying to use slurm for developing a scheduling solution and 1 of the
problems we face at the outset is how to determine
the order of scheduling for pending jobs.
One option is to find scheduling iteration window begin & close pointers &
cache the job ids as seen in order & then make them the priority order at that
point of time.
( This means for 500 pending jobs, say, if we can find which are the slurmctld
calls which mark the beginning & end of a sched iteration then we can use the
scheduling order
of jobs as the relative priority order for that period of time, of course it
may change depending on fairshare, user initiated priority modification etc. )
A concrete existing data structure showing the dynamic priority itself from
slurmctld would be handy.
Help appreciated.
Thanks!
Bhaskar.
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