[slurm-users] Get the list of added dynamic nodes

[Edmundo Carmona Antoranz via slurm-users]

Hi!

Is there a way to get the list of dynamic nodes that have been created but that are pending to get slurmd to run on them? I fail to see them with with either scontrol or sinfo:

root@ea-u24-dynamic-2511:~# scontrol show nodes | grep NodeName

NodeName=node001 Arch=x86_64 CoresPerSocket=1  
NodeName=node002 Arch=x86_64 CoresPerSocket=1  
NodeName=node003 Arch=x86_64 CoresPerSocket=1  
root@ea-u24-dynamic-2511:~# sinfo -N -a

NODELIST   NODES PARTITION STATE  
node001        1     defq* idle   
node002        1     defq* idle   
node003        1     defq* idle   
root@ea-u24-dynamic-2511:~# scontrol create NodeName=node004 .... state=FUTURE feature=dyn1

root@ea-u24-dynamic-2511:~# scontrol show nodes | grep NodeName

NodeName=node001 Arch=x86_64 CoresPerSocket=1  
NodeName=node002 Arch=x86_64 CoresPerSocket=1  
NodeName=node003 Arch=x86_64 CoresPerSocket=1  
root@ea-u24-dynamic-2511:~# sinfo -N -a

NODELIST   NODES PARTITION STATE  
node001        1     defq* idle   
node002        1     defq* idle   
node003        1     defq* idle   
root@ea-u24-dynamic-2511:~# scontrol version

slurm 25.11.2


Only when I start slurmd from node004 does it become visible (through scontrol only):

root@ea-u24-dynamic-2511:~# ssh node004 /cm/local/apps/slurm/current/sbin/slurmd -Z -f /cm/shared/apps/slurm/etc/slurm/slurm.conf

root@ea-u24-dynamic-2511:~# sinfo -N -a

NODELIST   NODES PARTITION STATE  
node001        1     defq* idle   
node002        1     defq* idle   
node003        1     defq* idle   
root@ea-u24-dynamic-2511:~# scontrol show nodes | grep NodeName

NodeName=node001 Arch=x86_64 CoresPerSocket=1  
NodeName=node002 Arch=x86_64 CoresPerSocket=1  
NodeName=node003 Arch=x86_64 CoresPerSocket=1  
NodeName=node004 Arch=x86_64 CoresPerSocket=1


Thanks in advance.


Edmundo Carmona Antoranz

Software Engineer
NVIDIA Corporation

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[Brian Andrus via slurm-users]

IIRC, they don't truly exist in slurm until slurmd starts and they
register with slurmctld.

Until then there is just a number placeholder saying there can be up to
X nodes in the cluster.

So your quest would be like wondering the name of the person in seat 5A
before anyone has purchased it.

Brian Andrus

[Christopher Samuel via slurm-users]

On 2/20/26 6:04 am, Edmundo Carmona Antoranz via slurm-users wrote:

> root@ea-u24-dynamic-2511:~# scontrol create NodeName=node004 .... state=FUTURE feature=dyn1

I believe you need the --future flag for scontrol and sinfo to see nodes
in the "FUTURE" state.

Best of luck,
Chris