I am not sure I fully understand your question, but if I do I believe the problem is that you forgot to add

PreemptMode=off

to the partitions which you do NOT want to be preempted, otherwise everything gets the cluster default. For example I have configured mine as follows

PreemptType = preempt/partition_prio
PreemptMode=REQUEUE
PartitionName=highpriority DefMemPerCPU=4580 Nodes=node[01-36] PreemptMode=off PriorityTier=500 State=UP
PartitionName=lowpriority DefMemPerCPU=4580 Nodes=node[01-36] PreemptMode=cancel PriorityTier=100 State=UP

and only jobs in the lowpriority partition get cancelled, other partitions (not shown) get requeued and highpriority one are left alone

HTH

On Mon, Feb 16, 2026 at 8:12 AM Marchand Aurélia via slurm-users <slurm-users@lists.schedmd.com> wrote:

Hello,

I want too use QOS preemption.

my configuration is :

preemptMode             = GANG,SUSPEND
PreemptParameters       = (null)
PreemptType             = preempt/qos
PriorityType            = priority/multifactor
SelectType              = select/cons_tres
SelectTypeParameters    = CR_CPU

I define 3 partitions :

PartitionName=DEFAULT Nodes=ALL Default=NO MaxTime=15-0 State=UP
OverSubscribe=FORCE:1 PreemptMode=suspend
PartitionName=veryhi PriorityTier=30 AllowQos=veryhi_short,gaia_veryhi_short
PartitionName=hi PriorityTier=20 AllowQos=hi_short,gaia_hi_short
PartitionName=def        PriorityTier=10 OverSubscribe=No Default=YES
AllowQos=def_short

I define 5 QOS :

sacctmgr show qos format=name%20,Priority,Preempt%40,PreemptMode
                   Name    Priority Preempt PreemptMode
----------------------- ------------ ----------------------------------
---------------
           normal           0                 cluster
   veryhi_short      20000 def_short     suspend
            hi_short      10000 def_short     suspend
            def_short            0 normal     suspend
gaia_veryhi_short      20000   def_short,gaia_hi_short suspend
        gaia_hi_short      10000 def_short     suspend

I define account :

sacctmgr show ass format=account%20,user,qos%60
            Account User                                              QOS
--------------------   --------
--------------------------------------------
              gaia_hi   user1 gaia_hi_short
       gaia_veryhi   user1 gaia_veryhi_short
               mis_hi   user1    hi_short
                    def   user1
def_short

I submit 2 jobs :

JOBID PARTITION                   QOS      ACCOUNT NAME USER
STATE   PRIORITY
159                  hi    hi_short mis_hi     test user1
SUSPENDE         637
160           veryhi gaia_veryhi_short gaia_veryhi     test user1
RUNNING   1150

I don't understand why job 160 suspend job 159, the partition priority
is higher, but I want gaia_veryhi_short QOS preempt only def_short and
gaia_hi_short QOS.

The QOS of job 159 is hi_short.

Where is my configuration error ?

Thanks for your time,

Aurélia

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