June 2025 - slurm-users - lists.schedmd.com

seff command not found
by Ratnasamy, Fritz 09 Jun '25

09 Jun '25

Hi, We installed a new slurm version and it returns "command not found" for seff. I do not remember doing any manual installation for the previous versions, I thought it was coming with sacct, sbatch, ect... Any idea how I would need to set it up? I read online seff is actually a perl script. Best, *Fritz Ratnasamy*Data Scientist Information Technology

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Re: Integration testing of Slinky images
by Nicolas Bock 06 Jun '25

06 Jun '25

Hi Brian, sorry for breaking the email thread, my subscription settings were not set correctly and I didn't receive your response as email. Thanks for the tips! I'll give that a try. Best, Nick > Nick, > Presuming you have followed the SchedMD instructions, you should be able > to get a session in your login container: > kubectl --namespace=slurm exec -it statefulsets/slurm-controller -- bash > --login > From there, you can do any standard testing you like. Simple 'srun > hostname' should work to let you know slurm itself is doing it's part. > You can also do commands such as 'scontrol show nodes' to see what and > how many resources you have configured. > Outside that, you need to ensure you have configured your slurm > containers to request the resources you plan on using (eg: gpus) and > that you have enough of them for the script(s) you wish to run. > Brian Andrus

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X11 Forwarding Crashes X Session for too large windows
by Felix Winterhalter 06 Jun '25

06 Jun '25

Hello everyone, we have run into a peculiar issue with our setup. First and foremost let me say that X forwarding using ssh -X or ssh -Y works fine and doesn't show any irregularities. Trying to use the X forwarding of slurm however results in a weird situation. We are using it like: srun --pty --x11 bash And then run something like glxgears. The program starts up normal however whenever you increase the window size beyond a certain size the connection to the X server gets broken and glxgears crashes. The same is true for any other program using X, some don't even start as their inital window size is too large, others crash as soon as you resize them beyond a certain point. We have no clue what might be the cause only that it seems to be related to how slurm does the XForwarding. We've tried X11Parameters both with and without host_authority. We're running 25.05.0 Any help or idea would be very appreciated. Cheers, Felix This message and any attachments are for the sole use of the intended recipient(s). It may contain information that is confidential and privileged. If you are not the intended recipient of this message, you are prohibited from printing, copying, forwarding or saving it. Please delete the message and attachments and notify the sender immediately.

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Integration testing of Slinky images
by Nicolas Bock 06 Jun '25

06 Jun '25

Hi, I was wondering whether there is any integration testing done on the containers and the operator published under the slinky project. Or asked differently, once I have deployed slinky, what tests should I run to confirm that the cluster is working as intended? Thanks! Nick

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X11 performance terrible using plugin
by Simon Andrews 06 Jun '25

06 Jun '25

On our cluster we've noticed that if we use the native x11 slurm plugin (PrologFlags=x11) then X applications work, but are really slow and unresponsive. Even opening menus on graphical application is painfully slow. On the same system if I do a direct ssh connection with ssh -YC from the head node the same applications are quick and responsive. Any suggestions for what might be causing this, and how I can get the native x11 to have the same responsiveness as a direct ssh connection? Many thanks Simon.

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Transfer from GPFS via slurm
by Ratnasamy, Fritz 06 Jun '25

06 Jun '25

Hi, We were told by our hardware provider that large datasets copied from NFS location to GPFS could be conducted via slurm to monitor the transfer. I am not sure of this works as I could not find much online. Otherwise apart from globus and rsync, what would you suggest as a tool/command to copy files from on a cluster between NFS and GPFS? Best, *Fritz Ratnasamy*Data Scientist Information Technology

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Changing account names in sacctmgr
by Burian, John 05 Jun '25

05 Jun '25

All, For reasons I won’t go into, we find we need to change the POSIX group names for all of our users. My understanding is that in the absence of an --account option, sbatch/salloc assumes the account is the user’s primary POSIX group. So, to change group names, we’ll need to change the account names on all the associations in sacctmgr. And ideally, we would change account names in accounting records so we don’t lose accounting history. One is tempted to get into the Slurm DB and start running SQL updates. Is that path too fraught with peril to consider? Or should I just recreate the associations with the new names and take my lumps on the accounting history? John

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error building debug packages on ubuntu 24.04
by Charles Hedrick 03 Jun '25

03 Jun '25

It was unable to find lib/security/pam_slurm_adopt.so It was built as lib64/security, not lib/security. ./debian/slurm-smd-libpam-slurm-adopt.install needs to be lib64/security/pam_slurm_adopt.so More likely, it needs to be built dynamically, so it will work everywhere.

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