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Slurm 25.05: Retrieving jobs GPU Indices on Heterogeneous Cluster
by David Gauchard 27 Aug '25

27 Aug '25

Hello, I'm running Slurm 25.05 on a heterogeneous cluster (several kind of GPU in the same node) with AutoDetect=nvml and shared mode. When submitting a job with `#SBATCH --gres=gpu:1`, CUDA_VISIBLE_DEVICES is correctly set to a single and valid free GPU index but `scontrol show jobid` does not report any detail about GPU allocation. How can I retrieve the GPU indices assigned to running jobs (reflecting CUDA_VISIBLE_DEVICES) in shared mode? Is there a Slurm command or configuration to enable tracking of these indices on a heterogeneous cluster? The goal is to help automatic choice of the free and appropriate gpu according to the job's needs in order to save bigger gpus for bigger jobs at the time of submitting. Thanks

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Issues with dynamic configless nodes and pam_slurm_adopt
by Leonardo Sala 26 Aug '25

26 Aug '25

Hallo everyone we have recently noticed that when running nodes in configless and dynamic mode, pam_slurm_adopt does not work properly, denying ssh access when the user has a running job. We traced down the issue to the fact that the dynamic nodes are registered with FQDN (e.g. c01.psi.ch), while pam_slurm_adopt uses this routine (https://github.com/SchedMD/slurm/blob/master/src/common/stepd_api.c#L181) to guess the stepd hostname, using the host short name (so, c01). If we use gethostname instead of gethostname_short then it works again. Has anybody experience with this, and is there a way to have dynamic configless nodes registering with the short hostname? Thanks! cheers leo -- Paul Scherrer Institut Dr. Leonardo Sala Group Leader Data Analysis and Research Infrastructure Group Leader Data Curation a.i. Deputy Department Head Science IT Infrastructure and Services department Science IT Infrastructure and Services department (AWI) OBBA/230 Forschungstrasse 111 5232 Villigen PSI Switzerland Phone: +41 56 310 3369 leonardo.sala(a)psi.ch www.psi.ch

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Tips or experiences with Burst Buffers?
by Bjørn-Helge Mevik 21 Aug '25

21 Aug '25

Dear all! We are currently considering setting up the (Lua) Burst Buffer plugin to stage in and out files. Those of you who have done this (or at least tried): do you have any experiences or tips to share? -- Regards, Bjørn-Helge Mevik

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GPFS nvme limit storage per job
by Ratnasamy, Fritz 18 Aug '25

18 Aug '25

We have our new dedicated GPFS storage and were wondering how to accommodate all the users on the local nvme. Is there a way for slurm to enforce a per-job quota for every user so we make sure they don't take all the space? Thanks, *Fritz Ratnasamy*Data Scientist Information Technology

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Nodes Become Invalid Due to Less Total RAM Than Expected
by Xaver Stiensmeier 18 Aug '25

18 Aug '25

Dear slurm-user list, in the past we had a bigger buffer between RealMemory <https://slurm.schedmd.com/slurm.conf.html#OPT_RealMemory> and the instance memory. We then discovered that the right way is to activating the *memory option* (SelectTypeParameters=CR_Core_Memory) and setting MemSpecLimit <https://slurm.schedmd.com/slurm.conf.html#OPT_MemSpecLimit> to secure RAM for system processes. However, now we run into the problem that due to *on demand scheduling*, we have to setup the slurm.conf in advance by using the RAM values from our flavors as reported by our cloud provider (OpenStack). These RAM values are higher than the RAM values the machines actually have later on: ram_in_mib by openstack total_ram_in_mib by top/slurm 2048 1968 16384 15991 32768 32093 65536 64297 122880 120749 245760 241608 491520 483528 Given that we have to define the slurm.conf in advance, we kinda have to predict how much total ram the instances have once created. Of course I used linear regression to approximate the total ram and then lowered it a bit to have some cushion, but this feels unsafe given that future flavors could differ from that. From the kernel documentation <https://www.kernel.org/doc/Documentation/filesystems/proc.txt> I know that MemTotal is MemTotal: Total usable ram (i.e. physical ram minus a few reserved bits and the kernel binary code) but given that the concrete reserved bits are quite complex <https://witekio.com/blog/cat-proc-meminfo-memtotal/>, I am wondering whether I am doing something wrong as this issue doesn't feel niche enough to be that complicated. --- Anyway, setting the RAM value in the slurm.conf above total ram by predicting too much, leads to errors and nodes being marked as invalid: [2025-08-11T08:19:04.736] debug: Node NODE_NAME has low real_memory size (241607 / 245760) < 100.00% [2025-08-11T08:19:04.736] error: _slurm_rpc_node_registration node=NODE_NAME: Invalid argument or |[2025-07-03T12:57:18.486] error: Setting node NODE_NAME state to INVAL with reason:Low RealMemory (reported:64295 < 100.00% of configured:68719)| |Any hint on how to solve this is much appreciated! | Best regards, Xaver

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Run a healthcheck job on all nodes
by John Hearns 18 Aug '25

18 Aug '25

I may have asked this already. I want to run a healtcheck job on all nodes. I can select the nodes in a partition by hand, the write a bash cript to get a list of nodes using nodeset -e Then submit to each node in the list using sbatch -w Is there a cleaner way of doing this? John Hearns

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SLUG 25?
by Dave Lloyd 11 Aug '25

11 Aug '25

Are there plans for a SLUG this year? I didn’t see any announcements on SchedMD’s website nor anything in the list. Thanks, -- Dave Lloyd This e-mail and any attachments may contain information that is confidential and proprietary and otherwise protected from disclosure. If you are not the intended recipient of this e-mail, do not read, duplicate or redistribute it by any means. Please immediately delete it and any attachments and notify the sender that you have received it by mistake. Unintended recipients are prohibited from taking action on the basis of information in this e-mail or any attachments. The DRW Companies make no representations that this e-mail or any attachments are free of computer viruses or other defects.

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sinfo history
by Steve Kirk 11 Aug '25

11 Aug '25

Hi, Am I correct in thinking that the history of a *node* as shown by sinfo isn't stored anywhere by Slurm? Interested to know if slurm can tell me historically when a node was draining,drained etc. Regards, Steve

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Slurm version 25.05.2 is now available
by Marshall Garey 07 Aug '25

07 Aug '25

We are pleased to announce the availability of Slurm version 25.05.2. This version fixes a few regressions with x11 forwarding in 25.05 that may prevent applications from launching, adds support for PMIx v6.x, fixes a variety of stability issues, fixes a regression where --tres-per-task was ignored, and fixes additional minor to moderate severity issues. The full list of changes are available in the CHANGELOG: https://github.com/SchedMD/slurm/blob/slurm-25.05/CHANGELOG/slurm-25.05.md Slurm can be downloaded from: https://www.schedmd.com/download-slurm/ -- Marshall Garey Release Management, Support, and Development SchedMD LLC - Commercial Slurm Development and Support

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Building Debian packages - problem
by John Hearns 05 Aug '25

05 Aug '25

I am trying to build Slurm version 24.11.6 on an Ubuntu 22.04 system. I download and unpack the source mk-build-deps -i debian/control (not run as root) debuild -b -uc -us I get this error repeated many times: dpkg-shlibdeps: warning: can't extract name and version from library name 'libslurmfull.so' Has anyone seen similar issues? For information, there is an existing SLurm installation on this syste, with version 21 dpkgs from the Ubuntu repository.

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slurmctld failed to start
by Dhumal, Dr. Nilesh 01 Aug '25

01 Aug '25

Hello, We recently installed slurm-25 on Redhat linux. We failed to start the slurmctld service. sudo systemctl start slurmctld Job for slurmctld.service failed because the control process exited with error code. See "systemctl status slurmctld.service" and "journalctl -xeu slurmctld.service" for details. sudo systemctl status slurmctld × slurmctld.service - Slurm controller daemon Loaded: loaded (/usr/local/lib/systemd/system/slurmctld.service; enabled; preset: disabled) Active: failed (Result: exit-code) since Thu 2025-07-31 22:23:18 EDT; 1min 3s ago Process: 44317 ExecStart=/usr/local/sbin/slurmctld --systemd $SLURMCTLD_OPTIONS (code=exited, status=1/FAILURE) Main PID: 44317 (code=exited, status=1/FAILURE) CPU: 35ms Jul 31 22:22:29 fgcu-compute01 systemd[1]: Starting Slurm controller daemon... Jul 31 22:23:18 fgcu-compute01 slurmctld[44317]: [2025-07-31T22:23:18.679] error: If munged is up, restart with --num-threads=10 Jul 31 22:23:18 fgcu-compute01 slurmctld[44317]: [2025-07-31T22:23:18.679] error: Munge encode failed: Failed to connect to "/run/munge/mung> Jul 31 22:23:18 fgcu-compute01 slurmctld[44317]: [2025-07-31T22:23:18.679] error: Failed to create MUNGE Credential Jul 31 22:23:18 fgcu-compute01 slurmctld[44317]: [2025-07-31T22:23:18.679] error: Couldn't load specified plugin name for auth/munge: Plugin> Jul 31 22:23:18 fgcu-compute01 slurmctld[44317]: [2025-07-31T22:23:18.679] error: cannot create auth context for auth/munge Jul 31 22:23:18 fgcu-compute01 slurmctld[44317]: [2025-07-31T22:23:18.679] fatal: failed to initialize auth plugin Jul 31 22:23:18 fgcu-compute01 systemd[1]: slurmctld.service: Main process exited, code=exited, status=1/FAILURE Jul 31 22:23:18 fgcu-compute01 systemd[1]: slurmctld.service: Failed with result 'exit-code'. Jul 31 22:23:18 fgcu-compute01 systemd[1]: Failed to start Slurm controller daemon. Here is munge service status. munge.service - MUNGE authentication service Loaded: loaded (/usr/local/lib/systemd/system/munge.service; enabled; preset: disabled) Active: active (running) since Thu 2025-07-31 22:06:14 EDT; 19min ago Docs: man:munged(8) Main PID: 44039 (munged) Tasks: 4 (limit: 606218) Memory: 1.4M CPU: 18ms CGroup: /system.slice/munge.service └─44039 /usr/local/sbin/munged Jul 31 22:06:14 fgcu-compute01 systemd[1]: Starting MUNGE authentication service... Jul 31 22:06:14 fgcu-compute01 systemd[1]: Started MUNGE authentication service. Any suggestion is apprecieted to resolve this issue. Thanks, Nilesh Dhumal Associate Professor of Chemistry, http://faculty.fgcu.edu/ndhumal/ Coordinator, FGCU Computational Facility, https://www.fgcu.edu/cas/facultyresources/computationalfacility/ SH-430; Department of Chemistry and Physics Florida Gulf Coast University 10501 FGCU Boulevard South Fort Myers, FL 33965-6565 Phone: (239) 745-4394 Email: ndhumal(a)fgcu.edu

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X11 forwarding broken in 25.05.1
by Patryk Bełzak 24 Jul '25

24 Jul '25

Hi, we've recentry upgraded our slurm from 24.11.3 to 25.05.1 and it seems that since the upgrade the ssh X11 forwaring is broken. Quick recap - * on Monday 14'th I performed slurdbd and slurmctld upgrades - X forwarding was still working * on Tuesday 15'th I performed slurmd upgrades - X forwarding stopped working The issue is very hard to determine and it looks like it sits somhere in slurm code. You can submit a job with --x11 and it starts corretly. Xauthority is created, you have all the magic cookies needed, but when you try to start any application, you get error related to permissions I guess, see for yourself: ``` me@sand ~ ssh -X -Y ui [wcss] me@ui.wcss.pl:~ > srun -p lem-cpu-short -A kdm-staff --gres=storage:local:50G -c 12 --mem 12G -t 1:0:0 --x11 --pty /bin/bash [wcss] me@r17ch05b01 ~ > xauth list r17ch05b01.lem.kdm.wcss.pl/unix:91 MIT-MAGIC-COOKIE-1 d82a2efd [wcss] me@r17ch05b01 ~ > xterm xterm: Xt error: Can't open display: localhost:91.0 [wcss] me@r17ch05b01 ~ > date && telnet -4 localhost 6091 || date Wed Jul 23 12:02:39 CEST 2025 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host. Wed Jul 23 12:02:41 CEST 2025 ``` As you can see the connection to port is being dropped/killed after a second or two. Now, it doesn't really matter which flags for ssh you pick (-X or -Y or both). X forwarding is working when you log in as a regular user outside of slurm job. Also if I do ssh localhost inside a job, then I can perform connection to port assigned to $DISPLAY and it isn't dropped - but it doesn't work since $DISPLAY and cookies are being messed up when you perform triple jump and one within same host. Our worker nodes are mostly on el9.5 AlmaLinux. Some are on el8.10 - and there acutally you can do some X forwarding but you must use both -X and -Y (which wasn't the case before slurm upgrade). TLS is disabled in slurm.conf. I am 100% sure that both SSHD and Xorg are properly configured. Has anyone encountered similiar issue? Or any comment from slurm dev team? Best regards Patryk -- Wroclaw Centre for Networking and Supercomputing

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New SchedMD Bike Kits Are Here - Preorder Now Open!
by Victoria Hobson 23 Jul '25

23 Jul '25

We’re excited to announce that SchedMD-branded bike kits are officially available for preorder! Each kit features both the SchedMD and Slurm logos—designed for comfort, performance, and pride.Pick between thoughtfully styled designs for mountain and road biking in each of the following categories: • Jerseys (zip-up or v-neck short sleeve) • Bibs (gravel bib with side and back pockets or switch bib) • Gloves (tech or summer) • Cycling socks with the SchedMD or Slurm logo (the right answer here is to just order both!) Preorders are open now through July 30, 2025. After the store closes, kits will be handcrafted and shipped directly to your door. Please note: delivery will take 8–10 weeks after preorder ends. Want 20% off your order? Reach out to Jess directly (jess(a)schedmd.com) to get an exclusive promo code! Ready to ride in style? Check out the SchedMD bike kits here: https://store.dnacycling.com/schedmd — Thanks for being part of the SchedMD community!

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strange GPU "no resources selected" error
by Paul Raines 23 Jul '25

23 Jul '25

Recently (past 3 days) on our NVIDIA DGX A100 systems running Ubuntu 22.04.5 and slurm 24.11.5 we have had jobs that ask for a gpu, get started by Slurm, but fail to be given a GPU and then fail. In the slurmctld log we see a line like: [2025-07-22T02:46:29.697] error: gres/gpu: job 6919154 node A100-04 no resources selected on the slurmd log I see no errors for the job but there is a line like [2025-07-22T02:46:29.757] [6919154.extern] task/cgroup: _handle_device_access: GRES: job devices.deny: adding c 195:0 rwm(/dev/nvidia0) for all 8 of the GPUs on the node. Other jobs still seem to start up and get a GPU fine. If you look at the job stats one sees: ReqTRES : billing=7,cpu=1,gres/gpu=1,mem=96G,node=1 AllocTRES : billing=3,cpu=1,mem=96G,node=1 showing that even though the gpu was requested, it was not allocated. Occasionly on these boxes (and only these -- my Dell Rocky 8 boxes with GPUS have no problem) we see the nodes go into drain mode with the "res/gpu GRES core specification ... doesn't match socket boundaries." message as per https://support.schedmd.com/show_bug.cgi?id=22498 It does seem to happen after slurmctld restart. I then restart slurmd on the nodes and can resume SLURM on the nodes whenever that happens. Otherwise nothing has changed on these nodes with SLURM config or the OS in over a month. Definition of the nodes are NodeName=A100-[01-04] \ CPUs=128 Boards=1 SocketsPerBoard=2 CoresPerSocket=64 \ ThreadsPerCore=1 RealMemory=1031000 MemSpecLimit=2048 \ TmpDisk=1400000 Feature=amd,epyc,a100 \ Gres=gpu:a100-sxm4-40gb:8 and gres.conf on the nodes is simply AutoDetect=nvml --------------------------------------------------------------- Paul Raines http://help.nmr.mgh.harvard.edu MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging 149 (2301) 13th Street Charlestown, MA 02129 USA The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Mass General Brigham Compliance HelpLine at https://www.massgeneralbrigham.org/complianceline <https://www.massgeneralbrigham.org/complianceline> . Please note that this e-mail is not secure (encrypted). If you do not wish to continue communication over unencrypted e-mail, please notify the sender of this message immediately. Continuing to send or respond to e-mail after receiving this message means you understand and accept this risk and wish to continue to communicate over unencrypted e-mail.

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slurm 25.05.0 : allocates less GPUs than requested by --gres=gpu:count
by Jan Gmys 23 Jul '25

23 Jul '25

Since upgrading slurm to 25.05.0 (22.05.9 -> 23.11.11 -> 25.05.0) some jobs requesting --gres=gpu:reqcount GPUs are allocated less than reqcount GPUs if some of the node's GPUs are already in use by other jobs. We have a node - let's call it ares-c02-06 - with 2 GPUs. Consider the following test script: > #!/bin/bash > #SBATCH --nodes=1 > #SBATCH --ntasks-per-node=1 > #SBATCH --time=1-00:00:00 > > echo "CUDA_VISIBLE_DEVICES: " $CUDA_VISIBLE_DEVICES > echo "SLURM_JOB_GPUS: " $SLURM_JOB_GPUS > echo "SLURM_GPUS_ON_NODE: " $SLURM_GPUS_ON_NODE > sleep 10d Submit a job to the node: > > sbatch *--gres=gpu:1* --nodelist=ares-c02-06 job.sh > > Submitted batch job 1950559 > The job starts. Now submit the script again, asking for 2 GPUs > sbatch*--gres=gpu:2* --nodelist=ares-c02-06 job.sh > > Submitted batch job 1950567 This second job should not start as the ressources are not available. Surprisingly, _both jobs are running_ > $ squeue -w ares-c02-06 > JOBID PARTITION NAME USER ST TIME NODES NODELIST(REASON) > 1950567 gpuai job.sh jan.gmys R 1:55 1 ares-c02-06 > 1950559 gpuai job.sh jan.gmys R 2:58 1 ares-c02-06 In the second job - 1950567 - AllocTRES shows gres/gpu=1, instead of the requested gres/gpu=2. > # sacct -j 1950567,1950559 -X -o jobid%10,reqtres%45,alloctres%60 > JobID ReqTRES AllocTRES > ---------- --------------------------------------------- ------------------------------------------------------------ > 1950559 billing=1,cpu=1,gres/gpu=1,mem=4G,node=1 billing=1,cpu=1,gres/gpu:l40s=1,gres/gpu=1,mem=4G,node=1 > 1950567 billing=1,cpu=1,*gres/gpu=2*,mem=4G,node=1 billing=1,cpu=1,gres/gpu:l40s=1,*gres/gpu=1*,mem=4G,node=1 The output of both jobs > $ cat slurm-1950559.out > CUDA_VISIBLE_DEVICES: 0 > SLURM_JOB_GPUS: 0 > SLURM_GPUS_ON_NODE: 1 > > $ cat slurm-1950567.out > CUDA_VISIBLE_DEVICES: 0 > SLURM_JOB_GPUS: 1 > SLURM_GPUS_ON_NODE: 1 CUDA_VISIBLE_DEVICES is set to 0 for both jobs. SLURM_JOB_GPUS is 0 resp. 1. *Environment: * - RHEL 9.1 - slurm 25.05.0 - The GRES configuration seems fine, AutoDetect is off : > # /usr/sbin/slurmd -G --conf-server hpc-slurm.cluster.hpc -v > [2025-07-22T16:44:05.548] GRES: Global*AutoDetect=off*(4) > [2025-07-22T16:44:05.548] GRES: _set_gres_device_desc : /dev/nvidia0 major 195, > minor 0 > [2025-07-22T16:44:05.548] GRES: _set_gres_device_desc : /dev/nvidia1 major 195, > minor 1 > [2025-07-22T16:44:05.548] GRES: gpu device number 0(/dev/nvidia0):c 195:0 rwm > [2025-07-22T16:44:05.548] GRES: gpu device number 1(/dev/nvidia1):c 195:1 rwm > [2025-07-22T16:44:05.548] Gres Name=gpu Type=L40S Count=2 Index=0 ID=7696487 > File=/dev/nvidia[0-1] Links=(null) > Flags=HAS_FILE,HAS_TYPE,ENV_NVML,ENV_RSMI,ENV_ONEAPI,ENV_OPENCL,ENV_DEFAULT and 'scontrol show node' > NodeName=ares-c02-06 Arch=x86_64 CoresPerSocket=24 > CPUAlloc=0 CPUEfctv=48 CPUTot=48 CPULoad=0.00 > AvailableFeatures=(null) > ActiveFeatures=(null) > Gres=gpu:L40S:2 > NodeAddr=ares-c02-06 NodeHostName=ares-c02-06 Version=25.05.0 > OS=Linux 5.14.0-162.6.1.el9_1.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Sep 30 > 07:36:03 EDT 2022 > RealMemory=386000 AllocMem=0 FreeMem=363069 Sockets=2 Boards=1 > State=IDLE+RESERVED+PLANNED ThreadsPerCore=1 TmpDisk=0 Weight=1 Owner=N/A > MCS_label=N/A > Partitions=gpuai > BootTime=2025-07-04T10:26:27 SlurmdStartTime=2025-07-22T14:48:54 > LastBusyTime=2025-07-22T16:26:36 ResumeAfterTime=None > CfgTRES=cpu=48,mem=386000M,billing=48,gres/gpu=2 > AllocTRES= *Debug notes :* - When using the --gpus option instead of --gres everything works as expected : the second job is PENDING (Ressources) - Tried both, ConstrainDevices=on/off in cgroup.conf, same result - The same is happening on other multi-GPU nodes of the cluster - When the --gres=gpu:2 job is submitted first, i.e. when all GPUs are taken, the second (--gres=gpu:1) job waits correctly. - When both GPUs are free, the --gres=gpu:2 job, correctly gets both GPUs : CUDA_VISIBLE_DEVICES: 0,1 - It worked in slurm 22.05.9 (we recently upgraded in two steps -> 23.11.11 -> 25.05.0) - The only viable workaround I see for the moment is to intercept --gres and --gpus-per-node (don't even have it in job_desc I think!! :-/) options in job_submit.lua and force users to use the --gpus option, which seems to works fine. Anyone experienced similar issues? Any idea how to solve this would be highly appreciated. Jan == -- Jan Gmys Ingénieur de recherche Support HPC/IA pour la plateforme MesoNET Mésocentre de Calcul Scientifique Intensif de l'Université de Lille

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Reserve memory for OS
by John Hearns 17 Jul '25

17 Jul '25

Someone remind me please what is the SLurm node parameter to reserve an amount of memory for the OS? Thanks

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Integrating Fabric Modules with SLURM – Best Practices for HPC Networking?
by xoyeyor178＠coderdir.com 15 Jul '25

15 Jul '25

Our team is exploring ways to optimize our HPC cluster’s network performance, particularly for multi-node SLURM workloads. We’re considering Network Devices Expansion Modules Fabric Modules https://serverorbit.com/network-devices/network-expansion-modules/fabric-mo… to enhance scalability and reduce latency between compute nodes. Has anyone successfully deployed Fabric Modules (e.g., Cisco Nexus, Arista, or Mellanox solutions) in a SLURM environment? Specifically: Interconnect Strategies – Any tips for configuring Fabric Modules to handle SLURM’s bursty traffic patterns? Performance Gains – Measurable improvements in job throughput or MPI communication? Troubleshooting – Known conflicts with SLURM’s network topology detection?

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Slurm-wlm depends on X11?
by Jesse Hayward 10 Jul '25

10 Jul '25

Hello group, hopefully a quick one: I am trying to install the suite of standard slurm packages (slurm, munge, slurmdbd, slurm-wlm-basic-plugins) on a compute node. Ubuntu 22.04.05 LTS just upgraded. *However, these packages now bring down x11 (libx11-6 and all of that other garbage in Ubuntu land). * Does slurm actually depend on x11 now? Or do I need to take a look at my apt config and see what's going on over there, instead. Thanks! Jess -- Jesse Hayward Systems Administrator for High Performance Computing Vassar College 845.437.7521 CIS 207

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Is DefCpuPerGPU affected by --ntasks-per-gpu?
by Milad Alizadeh 10 Jul '25

10 Jul '25

I have defined DefCpuPerGPU for a partition but when a job specifies --ntasks-per-gpu then DefCpuPerGPU is ignored and I only get 1 cpu: ``` #SBATCH --gpus=1 #SBATCH --ntasks-per-gpu=1 ``` Is this the expected behaviour? The man page for DefCpuPerGPU says: "This value is used only if the job didn't specify --cpus-per-task and --cpus-per-gpu" which I do not specify, at least not directly. If yes is there a way to set something like DefCpuPerTask?

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Setting memory by assigned node with a plugin
by laddaoui＠telecom-paris.fr 09 Jul '25

09 Jul '25

Hello everyone, I'm writing a job_submit/lua plugin to set the memory allocated to a job depending on which node is assigned by Slurm. However, it appears that the node where the job will run is not available at this step of the submission process. Would a SPANK plugin be able to access this information and modify the memory allocation accordingly? Or is there another approach you would recommend for dynamically setting memory based on the assigned node? Any insights would be greatly appreciated. Best regards, Nacereddine

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Slurm versions 25.05.1 and 24.11.6 are now available
by Marshall Garey 08 Jul '25

08 Jul '25

We are pleased to announce the availability of Slurm versions 25.05.1 and 24.11.6. Changes in 25.05 include the following: * Fix many issues with the TLS Certificate Manager introduced in 25.05 * Optimize account deletion * Fix a bug when reordering the association hierarchy * Fix some issues that cause daemon crashes * Fix a variety of memory leaks Changes in 24.11 include the following: * Fix some issues that cause daemons to crash * Fix some race conditions on shutdown that cause daemons to crash or hang The full list of changes are available in the CHANGELOG for each version: https://github.com/SchedMD/slurm/blob/slurm-25.05/CHANGELOG/slurm-25.05.md https://github.com/SchedMD/slurm/blob/slurm-24.11/CHANGELOG/slurm-24.11.md Slurm can be downloaded from: https://www.schedmd.com/download-slurm/ -- Marshall Garey Release Management, Support, and Development SchedMD LLC - Commercial Slurm Development and Support

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Energy profile data not recorded in InfluxDB or HDF5
by Xand Meaden 02 Jul '25

02 Jul '25

Hi, Environment: Slurm 23.11.5, Ubuntu Linux 22.04 I'm attempting to setup accounting of job energy data, collected from IPMI (with acct_gather_energy/ipmi) and then written to InfluxDB (with acct_gather_profile/influxdb), using this documentation: https://slurm.schedmd.com/acct_gather.conf.html This is successfully working for non-energy data. However, no Energy data appears in the InfluxDB. If I switch to using HDF5 instead, there is also no Energy data recorded there. Here's the config being used: root@erc-hpc-comp06t:/etc/slurm# grep Acct /etc/slurm/slurm.conf JobAcctGatherFrequency=30 JobAcctGatherType=jobacct_gather/cgroup AcctGatherEnergyType=acct_gather_energy/ipmi AcctGatherProfileType=acct_gather_profile/influxdb root@erc-hpc-comp06t:/etc/slurm# cat acct_gather.conf # Energy accounting gatherer configuration EnergyIPMIFrequency=60 EnergyIPMICalcAdjustment=yes EnergyIPMIUsername=xx EnergyIPMIPassword=xxxxx # InfluxDB configuration - record Energy and Task data by default ProfileInfluxDBDefault=Energy,Task # Using stunnel to reach InfluxDB over TLS ProfileInfluxDBHost=localhost:8086 ProfileInfluxDBDatabase=slurmpr_hpc_test ProfileInfluxDBUser=slurmpr_hpc_test_rw ProfileInfluxDBPass=xx ProfileInfluxDBRTPolicy=autogen The Task data is recorded just fine. And I can see that the IPMI plugin is working: root@erc-hpc-comp06t:/etc/slurm# scontrol show node erc-hpc-comp06t | grep CurrentWatts CurrentWatts=85 AveWatts=84 Does anyone have this working? I really hope I'm missing something obvious here! Thanks, Xand -- Xand Meaden | Principal Research Infrastructure Engineer e-Research | King's College London

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sbatch strange behavior with different --nodelist (-w) options
by Xinghong He 30 Jun '25

30 Jun '25

Dear Community, I'm seeing strange behavior from sbatch with different --nodelist (-w) options on my two node cluster. Here are my test scripts: *~/slurm$ cat mpirun.slm#!/bin/bash#SBATCH --job-name=mpirun_2x1#SBATCH --nodes=2#SBATCH --ntasks-per-node=1#SBATCH --exclusivesource /usr/mpi/gcc/openmpi-4.1.7a1/bin/mpivars.shmpirun ./a.sh* *~/slurm$ cat a.sh#!/bin/bashecho "`uname -n` OMPI_COMM_WORLD_RANK = $OMPI_COMM_WORLD_RANK SLURM_NODEID = $SLURM_NODEID SLURM_JOB_NODELIST = $SLURM_JOB_NODELIST"* If I do not specify any -w option or if I include both nodes in -w option, I get expected results. *~/slurm$ sbatch mpirun.slmSubmitted batch job 71~/slurm$ cat slurm-71.outstd-199 OMPI_COMM_WORLD_RANK = 0 SLURM_NODEID = 0 SLURM_JOB_NODELIST = std-[199,271]std-271 OMPI_COMM_WORLD_RANK = 1 SLURM_NODEID = 0 SLURM_JOB_NODELIST = std-[199,271]* However, if I specify only one node in -w option, but still want two nodes, I always get one expected result and one unexpected result. The unexpected one will dispatch both MPI tasks to the same node. This one is expected - running two MPI tasks across nodes. *~/slurm$ sbatch -w std-199 mpirun.slmSubmitted batch job 72~/slurm$ cat slurm-72.outstd-199 OMPI_COMM_WORLD_RANK = 0 SLURM_NODEID = 0 SLURM_JOB_NODELIST = std-[199,271]std-271 OMPI_COMM_WORLD_RANK = 1 SLURM_NODEID = 0 SLURM_JOB_NODELIST = std-[199,271]* This one if unexpected - ends up running two MPI tasks on the same node, though SLURM_JOB_NODELIST also gives the correct two nodes. *~/slurm$ sbatch -w std-271 mpirun.slmSubmitted batch job 73ubuntu@bright-anchovy-controller:~/slurm$ cat slurm-73.outstd-199 OMPI_COMM_WORLD_RANK = 0 SLURM_NODEID = 0 SLURM_JOB_NODELIST = std-[199,271]std-199 OMPI_COMM_WORLD_RANK = 1 SLURM_NODEID = 0 SLURM_JOB_NODELIST = std-[199,271]* I first saw the problem on a larger cluster where I needed to specify both -w and -x options to include and exclude nodes. I then narrowed it down to a two node cluster. I tried adding options like --hostfile or --rankfile, or -npernode, all does not change how the tasks are dispatched to nodes. The problem is repeatable. Here are the tested systems: Slurm 23.02.5 on Ubuntu 22.04.5 LTS Slurm 24.05.1 on Ubuntu 22.04.4 LTS How to make the last one work. I.e., requesting *-w std-271* and make it run on two nodes. I'd appreciate any help! Regards, Xinghong

1 0

extern step does not exit
by william＠signalbox.org.uk 27 Jun '25

27 Jun '25

I am building a new small cluster on Rocky Linux 9 with Slurm 24.11.5. Slurm was compiled with the default options except that we added --with pmix We do use some additional complications - we use NFSv4 with AD authentication (so we use auks), and we use SElinux in enforcing mode. However, I do not currently see any evidence that those relate to the problem that we have; though note that the slurm account is an AD account. All relevant AD accounts have the RFC 2307 attributes (uid, gid etc.) configured. I had also configured pam_slurm_adopt but as that was causing issues I backed out the changes that enable it. It was too hard to troubleshoot without being able to login to the test compute node easily. The issue I am having in testing is that whatever job I launch, when it terminates the extern job step does not terminate. These are the more relevant slurm.conf settings: Epilog=/etc/slurm/epilog.sh JobAcctGatherType=jobacct_gather/cgroup JobCompType=jobcomp/none KillOnBadExit=1 KillWait=30 ProctrackType=proctrack/cgroup Prolog=/etc/slurm/prolog.sh PrologFlags=Alloc,Contain SelectTypeParameters=CR_Core_Memory SelectType=select/cons_tres SlurmUser=slurm TaskPlugin=task/affinity,task/cgroup TaskProlog=/etc/slurm/taskprolog.sh The slurmd.log on the compute node for the job shows a sequence like this (with -vv debug enabled): [2025-06-26T14:57:23.272] select/cons_tres: init: select/cons_tres loaded [2025-06-26T14:57:23.272] select/linear: init: Linear node selection plugin loaded with argument 20 [2025-06-26T14:57:23.272] cred/munge: init: Munge credential signature plugin loaded [2025-06-26T14:57:23.272] [34.extern] debug: auth/munge: init: loaded [2025-06-26T14:57:23.273] [34.extern] debug: Reading cgroup.conf file /etc/slurm/cgroup.conf [2025-06-26T14:57:23.279] [34.extern] debug: cgroup/v2: init: Cgroup v2 plugin loaded [2025-06-26T14:57:23.290] [34.extern] debug: hash/k12: init: init: KangarooTwelve hash plugin loaded [2025-06-26T14:57:23.291] [34.extern] debug: CPUs:40 Boards:1 Sockets:2 CoresPerSocket:20 ThreadsPerCore:1 [2025-06-26T14:57:23.291] [34.extern] debug: task/cgroup: init: core enforcement enabled [2025-06-26T14:57:23.291] [34.extern] debug: task/cgroup: task_cgroup_memory_init: task/cgroup/memory: TotCfgRealMem:191587M allowed:100%(enforced), swap:0%(enforced), max:100%(191587M) max+swap:100%(383174M) min:30M [2025-06-26T14:57:23.291] [34.extern] debug: task/cgroup: init: memory enforcement enabled [2025-06-26T14:57:23.291] [34.extern] debug: task/cgroup: init: device enforcement enabled [2025-06-26T14:57:23.291] [34.extern] debug: task/cgroup: init: Tasks containment cgroup plugin loaded [2025-06-26T14:57:23.291] [34.extern] task/affinity: init: task affinity plugin loaded with CPU mask 0xffffffffff [2025-06-26T14:57:23.291] [34.extern] debug: jobacct_gather/cgroup: init: Job accounting gather cgroup plugin loaded [2025-06-26T14:57:23.291] [34.extern] topology/default: init: topology Default plugin loaded [2025-06-26T14:57:23.292] [34.extern] debug: gpu/generic: init: init: GPU Generic plugin loaded [2025-06-26T14:57:23.293] [34.extern] debug: Setting slurmstepd(2666071) oom_score_adj to -1000 [2025-06-26T14:57:23.293] [34.extern] debug: Message thread started pid = 2666071 [2025-06-26T14:57:23.294] [34.extern] debug: spank: opening plugin stack /etc/slurm/plugstack.conf [2025-06-26T14:57:23.294] [34.extern] debug: /etc/slurm/plugstack.conf: 1: include "/etc/slurm/plugstack.conf.d/*.conf" [2025-06-26T14:57:23.294] [34.extern] debug: spank: opening plugin stack /etc/slurm/plugstack.conf.d/auks.conf [2025-06-26T14:57:23.298] [34.extern] debug: spank: /etc/slurm/plugstack.conf.d/auks.conf:57: Loaded plugin auks.so [2025-06-26T14:57:23.298] [34.extern] debug: SPANK: appending plugin option "auks" [2025-06-26T14:57:23.352] [34.extern] spank-auks: new unique ccache is KCM:71433:49222 <<<< This UID 71433 is the user running the job [2025-06-26T14:57:23.364] [34.extern] spank-auks: user '71433' cred stored in ccache KCM:71433:49222 [2025-06-26T14:57:23.380] [34.extern] debug: task/cgroup: task_cgroup_cpuset_create: job abstract cores are '0' [2025-06-26T14:57:23.381] [34.extern] debug: task/cgroup: task_cgroup_cpuset_create: step abstract cores are '0' [2025-06-26T14:57:23.381] [34.extern] debug: task/cgroup: task_cgroup_cpuset_create: job physical CPUs are '0' [2025-06-26T14:57:23.381] [34.extern] debug: task/cgroup: task_cgroup_cpuset_create: step physical CPUs are '0' [2025-06-26T14:57:23.381] [34.extern] task/cgroup: _memcg_initialize: job: alloc=1024MB mem.limit=1024MB memsw.limit=1024MB job_swappiness=18446744073709551614 [2025-06-26T14:57:23.381] [34.extern] task/cgroup: _memcg_initialize: step: alloc=1024MB mem.limit=1024MB memsw.limit=1024MB job_swappiness=18446744073709551614 [2025-06-26T14:57:23.385] [34.extern] debug: close_slurmd_conn: sending 0: No error [2025-06-26T14:57:24.371] launch task StepId=34.interactive request from UID:71433 GID:70668 HOST:172.17.11.22 PORT:46948 [2025-06-26T14:57:24.372] task/affinity: lllp_distribution: JobId=34 manual binding: mask_cpu,one_thread [2025-06-26T14:57:24.372] debug: Waiting for job 34's prolog to complete [2025-06-26T14:57:24.372] debug: Finished wait for job 34's prolog to complete [2025-06-26T14:57:24.377] select/cons_tres: init: select/cons_tres loaded [2025-06-26T14:57:24.377] select/linear: init: Linear node selection plugin loaded with argument 20 [2025-06-26T14:57:24.377] cred/munge: init: Munge credential signature plugin loaded [2025-06-26T14:57:24.377] [34.interactive] debug: auth/munge: init: loaded [2025-06-26T14:57:24.379] [34.interactive] debug: Reading cgroup.conf file /etc/slurm/cgroup.conf [2025-06-26T14:57:24.384] [34.interactive] debug: cgroup/v2: init: Cgroup v2 plugin loaded [2025-06-26T14:57:24.403] [34.interactive] debug: hash/k12: init: init: KangarooTwelve hash plugin loaded [2025-06-26T14:57:24.404] [34.interactive] debug: CPUs:40 Boards:1 Sockets:2 CoresPerSocket:20 ThreadsPerCore:1 [2025-06-26T14:57:24.404] [34.interactive] debug: task/cgroup: init: core enforcement enabled [2025-06-26T14:57:24.404] [34.interactive] debug: task/cgroup: task_cgroup_memory_init: task/cgroup/memory: TotCfgRealMem:191587M allowed:100%(enforced), swap:0%(enforced), max:100%(191587M) max+swap:100%(383174M) min:30M [2025-06-26T14:57:24.404] [34.interactive] debug: task/cgroup: init: memory enforcement enabled [2025-06-26T14:57:24.404] [34.interactive] debug: task/cgroup: init: device enforcement enabled [2025-06-26T14:57:24.404] [34.interactive] debug: task/cgroup: init: Tasks containment cgroup plugin loaded [2025-06-26T14:57:24.404] [34.interactive] task/affinity: init: task affinity plugin loaded with CPU mask 0xffffffffff [2025-06-26T14:57:24.404] [34.interactive] debug: jobacct_gather/cgroup: init: Job accounting gather cgroup plugin loaded [2025-06-26T14:57:24.404] [34.interactive] topology/default: init: topology Default plugin loaded [2025-06-26T14:57:24.404] [34.interactive] debug: gpu/generic: init: init: GPU Generic plugin loaded [2025-06-26T14:57:24.406] [34.interactive] debug: close_slurmd_conn: sending 0: No error [2025-06-26T14:57:24.406] [34.interactive] debug: Message thread started pid = 2666089 [2025-06-26T14:57:24.406] [34.interactive] debug: Setting slurmstepd(2666089) oom_score_adj to -1000 [2025-06-26T14:57:24.407] [34.interactive] debug: spank: opening plugin stack /etc/slurm/plugstack.conf [2025-06-26T14:57:24.407] [34.interactive] debug: /etc/slurm/plugstack.conf: 1: include "/etc/slurm/plugstack.conf.d/*.conf" [2025-06-26T14:57:24.407] [34.interactive] debug: spank: opening plugin stack /etc/slurm/plugstack.conf.d/auks.conf [2025-06-26T14:57:24.411] [34.interactive] debug: spank: /etc/slurm/plugstack.conf.d/auks.conf:57: Loaded plugin auks.so [2025-06-26T14:57:24.411] [34.interactive] debug: SPANK: appending plugin option "auks" [2025-06-26T14:57:24.461] [34.interactive] spank-auks: new unique ccache is KCM:71433:44156 [2025-06-26T14:57:24.467] [34.interactive] spank-auks: user '71433' cred stored in ccache KCM:71433:44156 [2025-06-26T14:57:24.480] [34.interactive] debug: task/cgroup: task_cgroup_cpuset_create: job abstract cores are '0' [2025-06-26T14:57:24.480] [34.interactive] debug: task/cgroup: task_cgroup_cpuset_create: step abstract cores are '0' [2025-06-26T14:57:24.480] [34.interactive] debug: task/cgroup: task_cgroup_cpuset_create: job physical CPUs are '0' [2025-06-26T14:57:24.480] [34.interactive] debug: task/cgroup: task_cgroup_cpuset_create: step physical CPUs are '0' [2025-06-26T14:57:24.481] [34.interactive] task/cgroup: _memcg_initialize: job: alloc=1024MB mem.limit=1024MB memsw.limit=1024MB job_swappiness=18446744073709551614 [2025-06-26T14:57:24.481] [34.interactive] task/cgroup: _memcg_initialize: step: alloc=1024MB mem.limit=1024MB memsw.limit=1024MB job_swappiness=18446744073709551614 [2025-06-26T14:57:24.501] [34.interactive] warning: restricted to a subset of cpus [2025-06-26T14:57:24.503] [34.interactive] debug: stdin uses a pty object [2025-06-26T14:57:24.504] [34.interactive] debug: init pty size 48:324 [2025-06-26T14:57:24.506] [34.interactive] debug levels are stderr='error', logfile='debug', syslog='quiet' [2025-06-26T14:57:24.507] [34.interactive] debug: IO handler started pid=2666089 [2025-06-26T14:57:24.517] [34.interactive] spank-auks: credential renewer launched (pid=2666107) [2025-06-26T14:57:24.517] [34.interactive] starting 1 tasks [2025-06-26T14:57:24.517] [34.interactive] task 0 (2666108) started 2025-06-26T14:57:24 [2025-06-26T14:57:24.537] [34.interactive] debug: task/affinity: task_p_pre_launch: affinity StepId=34.interactive, task:0 bind:mask_cpu,one_thread [2025-06-26T14:57:24.537] [34.interactive] debug: [job 34] attempting to run slurm task_prolog [/etc/slurm/taskprolog.sh] [2025-06-26T14:57:24.537] [34.interactive] debug: Sending launch resp rc=0 [2025-06-26T14:57:24.563] [34.interactive] debug: export name:TMPDIR:val:/local/scratch/34: [2025-06-26T14:59:42.726] [34.interactive] task 0 (2666108) exited with exit code 0. <<<< Here the interactive job was closed [2025-06-26T14:59:42.727] [34.interactive] spank-auks: all tasks exited, killing credential renewer (pid=2666107) [2025-06-26T14:59:42.729] [34.interactive] debug: task/affinity: task_p_post_term: affinity StepId=34.interactive, task 0 [2025-06-26T14:59:42.729] [34.interactive] debug: signaling condition [2025-06-26T14:59:42.729] [34.interactive] debug: jobacct_gather/cgroup: fini: Job accounting gather cgroup plugin unloaded [2025-06-26T14:59:42.729] [34.interactive] debug: Waiting for IO [2025-06-26T14:59:42.729] [34.interactive] debug: Closing debug channel [2025-06-26T14:59:42.729] [34.interactive] debug: IO handler exited, rc=0 [2025-06-26T14:59:42.729] [34.interactive] debug: task/cgroup: fini: Tasks containment cgroup plugin unloaded [2025-06-26T14:59:42.731] [34.interactive] debug: slurm_recv_timeout at 0 of 4, recv zero bytes [2025-06-26T14:59:42.738] [34.interactive] spank-auks: Destroyed ccache KCM:71433:44156 [2025-06-26T14:59:42.740] debug: _rpc_terminate_job: uid = 71755 JobId=34 <<<< That uid 71755 is for the slurm account which does not run any daemons on a compute node [2025-06-26T14:59:42.740] debug: credential for job 34 revoked [2025-06-26T14:59:42.742] [34.extern] debug: Handling REQUEST_SIGNAL_CONTAINER [2025-06-26T14:59:42.742] [34.extern] debug: _handle_signal_container for StepId=34.extern uid=71755 signal=18 flag=0x0 [2025-06-26T14:59:42.742] [34.extern] Sent signal 18 to StepId=34.extern [2025-06-26T14:59:42.742] [34.interactive] debug: Handling REQUEST_SIGNAL_CONTAINER [2025-06-26T14:59:42.742] [34.interactive] debug: _handle_signal_container for StepId=34.interactive uid=71755 signal=18 flag=0x0 [2025-06-26T14:59:42.742] [34.interactive] Sent signal 18 to StepId=34.interactive [2025-06-26T14:59:42.743] [34.extern] debug: Handling REQUEST_SIGNAL_CONTAINER [2025-06-26T14:59:42.743] [34.extern] debug: _handle_signal_container for StepId=34.extern uid=71755 signal=15 flag=0x0 [2025-06-26T14:59:42.743] [34.extern] Sent signal 15 to StepId=34.extern [2025-06-26T14:59:42.743] [34.interactive] debug: Handling REQUEST_SIGNAL_CONTAINER [2025-06-26T14:59:42.743] [34.interactive] debug: _handle_signal_container for StepId=34.interactive uid=71755 signal=15 flag=0x0 [2025-06-26T14:59:42.743] [34.interactive] Sent signal 15 to StepId=34.interactive [2025-06-26T14:59:42.744] [34.interactive] debug: Handling REQUEST_STATE [2025-06-26T14:59:42.744] [34.interactive] debug: Message thread exited [2025-06-26T14:59:42.744] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:42.763] [34.interactive] done with step [2025-06-26T14:59:42.766] [34.extern] debug: signaling condition [2025-06-26T14:59:42.766] [34.extern] debug: task/affinity: task_p_post_term: affinity StepId=34.extern, task 0 [2025-06-26T14:59:42.766] [34.extern] debug: jobacct_gather/cgroup: fini: Job accounting gather cgroup plugin unloaded [2025-06-26T14:59:42.766] [34.extern] debug: task/cgroup: fini: Tasks containment cgroup plugin unloaded [2025-06-26T14:59:42.766] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:42.766] [34.extern] debug: Terminate signal (SIGTERM) received [2025-06-26T14:59:42.768] [34.extern] error: setgroups: Operation not permitted [2025-06-26T14:59:42.768] [34.extern] error: _shutdown_x11_forward: Unable to drop privileges [2025-06-26T14:59:42.771] [34.extern] spank-auks: Destroyed ccache KCM:71433:49222 [2025-06-26T14:59:42.817] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:42.918] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:43.419] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:44.420] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:45.420] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:46.421] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:47.422] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:48.423] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:49.424] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:50.425] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:51.426] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:52.426] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T14:59:53.427] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:03.428] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:12.429] [34.extern] debug: Handling REQUEST_STEP_TERMINATE [2025-06-26T15:00:12.429] [34.extern] debug: _handle_terminate for StepId=34.extern uid=0 [2025-06-26T15:00:12.429] [34.extern] Sent SIGKILL signal to StepId=34.extern [2025-06-26T15:00:12.429] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:12.450] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:12.501] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:12.602] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:13.102] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:14.103] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:14.104] [34.extern] debug: Handling REQUEST_STEP_TERMINATE [2025-06-26T15:00:14.104] [34.extern] debug: _handle_terminate for StepId=34.extern uid=0 [2025-06-26T15:00:14.104] [34.extern] Sent SIGKILL signal to StepId=34.extern [2025-06-26T15:00:15.105] [34.extern] debug: Handling REQUEST_STATE [2025-06-26T15:00:15.105] [34.extern] debug: Handling REQUEST_STEP_TERMINATE . . We are left with a process "slurmstepd: [34.extern]" running, and a matching socket file for job 34 in /var/spool/slurmd; the job shows state 'CG' (Completing). I can clean up by issuing a kill -9 to the slurmstepd 'extern' job on the compute node. I do not know a way to get any logging output from that job step, but it has a file descriptor open to /var/log/slurm/slurmd.log (which is what we configured) so I assume that it is writing some of the above log. In some runs I also see this just as the main task exits (but from the .0 job step, not from .extern) : [2025-06-27T21:00:47.265] [39.0] error: common_file_write_content: unable to open '/sys/fs/cgroup/system.slice/slurmstepd.scope/job_39/step_0/user/cgroup.free ze' for writing: Permission denied I can see that between reboots, the directories '/sys/fs/cgroup/system.slice/slurmstepd.scope/job_NN' remain, with the /sys/fs/cgroup/system.slice/slurmstepd.scope/job_NN/step_extern folder. The permissions of the files referred to as 'permission denied' seem fine to me: # ls -lhZ /sys/fs/cgroup/system.slice/slurmstepd.scope/job_42/step_extern/user/cgroup. freeze -rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Jun 27 21:46 /sys/fs/cgroup/system.slice/slurmstepd.scope/job_42/step_extern/user/cgroup. freeze There are no SElinux alerts on the system. I am not sure whether the error messages about setgroups and _shutdown_x11_forward are actually the problem, or just something else being reported. The only system that I have to compare with is running Slurm 19.05 on CentOS 7 and is rather different. I would be interested to know if anyone else has had problems with extern job steps not shutting down. William

1 0

Job information if job is completed
by Gestió Servidors 24 Jun '25

24 Jun '25

Hello, Is there any way to get all information (like submit script or submit node) from a job that is completed? Something like "scontrol show jobid=XXX" when job is "running" or "pending". I need to inspect the submit script of a job but I only know job_id. Thanks.

6 5