- slurm-users - lists.schedmd.com

HPC Principal System Engineer at the Broad
by Paul Edmon 25 Apr '24

25 Apr '24

A friend ask me to pass this along. Figured some folks on this list might be interested. https://broadinstitute.avature.net/en_US/careers/JobDetail/HPC-Principal-Sy… -Paul Edmon-

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Apply an specific QoS to all users that belongs to an specific account
by Gestió Servidors 23 Apr '24

23 Apr '24

Hi, I would like to know if it is possible to apply an specific QoS to all users that belongs to an specific account. For example, I have created some new users "user_XX" and, also, I have created their new accounts in SLURM with "sacctmgr create account name=Test" and "sacctmgr create user name=user_XX DefaultAccount=Test". After it, I have changed default QoS "normal" to a new QoS "minimal" (with some limits) to account "Test" (sacctmgr modify account where name=Test set qos=minimal), but what I have seen is that users "user_XX" that belongs to "Test" account continue in QoS "normal" (QoS by default), so it seems that users have not inherited QoS applied to their account. Is there any way to do this and am I doing something wrong? Thanks. -- [cid:image003.jpg@01DA9569.AE233AA0]<http://www.uab.cat/> Daniel Ruiz Molina Tècnic Mitjà Informàtic Arquitectura de Computadors i Sistemes Operatius Escola d'Enginyeria Edifici Q - Despatx QC/3052 - Carrer de les Sitges Campus de la UAB · 08193 Bellaterra (Cerdanyola del Vallès) · Barcelona · Spain +34 93 581 35 44 www.uab.cat<http://www.uab.cat/> Daniel Ruiz at UAB<https://tinyurl.com/yd95zb8j> [cid:image004.jpg@01DA9569.AE233AA0]<www.linkedin.com/in/daniel-ruiz-molina-50a83b27> Aquest missatge s'adreça exclusivament a la persona destinatària i pot contenir informació privada o confidencial. Si l'heu rebut per error, comuniqueu-nos-ho i destruïu-lo, i tingueu present que no teniu autorització per fer-ne cap ús. Abans d'imprimir aquest missatge penseu en el medi ambient.

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Integrating Slurm with WekaIO
by Jeffrey Layton 19 Apr '24

19 Apr '24

Good afternoon, I'm working on a cluster of NVIDIA DGX A100's that is using BCM 10 (Base Command Manager which is based on Bright Cluster Manager). I ran into an error and only just learned that Slurm and Weka don't get along (presumably because Weka pins their client threads to cores). I read through their documentation here: https://docs.weka.io/best-practice-guides/weka-and-slurm-integration#headin… I through I set everything correctly but when I try to restart the slurm server I get the following: Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: slurmd: error: resolve_ctls_from_dns_srv: res_nsearch error: Unknown host Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: slurmd: error: fetch_config: DNS SRV lookup failed Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: slurmd: error: _establish_configuration: failed to load configs Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: slurmd: error: slurmd initialization failed Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: error: resolve_ctls_from_dns_srv: res_nsearch error: Unknown host Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: error: fetch_config: DNS SRV lookup failed Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: error: _establish_configuration: failed to load configs Apr 19 05:29:39 bcm10-headnode slurmd[3992058]: error: slurmd initialization failed Apr 19 05:29:39 bcm10-headnode systemd[1]: slurmd.service: Main process exited, code=exited, status=1/FAILURE Apr 19 05:29:39 bcm10-headnode systemd[1]: slurmd.service: Failed with result 'exit-code'. Has anyone encountered this? I read this is usually associated with configless Slurm, but I don't know how Slurm is built in BCM. slurm.conf is located in /cm/shared/apps/slurm/var/etc/slurm and this is what I edited. The environment variables for Slurm are set correctly so it points to this slurm.conf file. One thing that I did not do was tell Slurm which cores Weka was using. I can seem to figure out the syntax for this. Can someone share the changes they made to slurm.conf? Thanks! Jeff

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Munge log-file fills up the file system to 100%
by Ole Holm Nielsen 19 Apr '24

19 Apr '24

We have some new AMD EPYC compute nodes with 96 cores/node running RockyLinux 8.9. We've had a number of incidents where the Munge log-file /var/log/munge/munged.log suddenly fills up the root file system, after a while to 100% (tens of GBs), and the node eventually comes to a grinding halt! Wiping munged.log and restarting the node works around the issue. I've tried to track down the symptoms and this is what I found: 1. In munged.log there are infinitely many lines filling up the disk: 2024-04-11 09:59:29 +0200 Info: Suspended new connections while processing backlog 2. The slurmd is not getting any responses from munged, even though we run "munged --num-threads 10". The slurmd.log displays errors like: [2024-04-12T02:05:45.001] error: If munged is up, restart with --num-threads=10 [2024-04-12T02:05:45.001] error: Munge encode failed: Failed to connect to "/var/run/munge/munge.socket.2": Resource temporarily unavailable [2024-04-12T02:05:45.001] error: slurm_buffers_pack_msg: auth_g_create: RESPONSE_ACCT_GATHER_UPDATE has authentication error 3. The /var/log/messages displays the errors from slurmd as well as NetworkManager saying "Too many open files in system". The telltale syslog entry seems to be: Apr 12 02:05:48 e009 kernel: VFS: file-max limit 65536 reached where the limit is confirmed in /proc/sys/fs/file-max. We have never before seen any such errors from Munge. The error may perhaps be triggered by certain user codes (possibly star-ccm+) that might be opening a lot more files on the 96-core nodes than on nodes with a lower core count. My workaround has been to edit the line in /etc/sysctl.conf: fs.file-max = 131072 and update settings by "sysctl -p". We haven't seen any of the Munge errors since! The version of Munge in RockyLinux 8.9 is 0.5.13, but there is a newer version in https://github.com/dun/munge/releases/tag/munge-0.5.16 I can't figure out if 0.5.16 has a fix for the issue seen here? Questions: Have other sites seen the present Munge issue as well? Are there any good recommendations for setting the fs.file-max parameter on Slurm compute nodes? Thanks for sharing your insights, Ole -- Ole Holm Nielsen PhD, Senior HPC Officer Department of Physics, Technical University of Denmark

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Reserving resources for use by non-slurm stuff
by Shooktija S N 17 Apr '24

17 Apr '24

Hi, I am running Slurm (v22.05.8) on 3 nodes each with the following specs: OS: Proxmox VE 8.1.4 x86_64 (based on Debian 12) CPU: AMD EPYC 7662 (128) GPU: NVIDIA GeForce RTX 4070 Ti Memory: 128 Gb This is /etc/slurm/slurm.conf on all 3 computers without the comment lines: ClusterName=DlabCluster SlurmctldHost=server1 GresTypes=gpu ProctrackType=proctrack/linuxproc ReturnToService=1 SlurmctldPidFile=/var/run/slurmctld.pid SlurmctldPort=6817 SlurmdPidFile=/var/run/slurmd.pid SlurmdPort=6818 SlurmdSpoolDir=/var/spool/slurmd SlurmUser=root StateSaveLocation=/var/spool/slurmctld TaskPlugin=task/affinity,task/cgroup InactiveLimit=0 KillWait=30 MinJobAge=300 SlurmctldTimeout=120 SlurmdTimeout=300 Waittime=0 SchedulerType=sched/backfill SelectType=select/cons_tres JobCompType=jobcomp/none JobAcctGatherFrequency=30 SlurmctldDebug=debug3 SlurmctldLogFile=/var/log/slurmctld.log SlurmdDebug=debug3 SlurmdLogFile=/var/log/slurmd.log NodeName=server[1-3] RealMemory=128636 Sockets=1 CoresPerSocket=64 ThreadsPerCore=2 State=UNKNOWN Gres=gpu:1 PartitionName=mainPartition Nodes=ALL Default=YES MaxTime=INFINITE State=UP I want to reserve a few cores and a few gigs of RAM for use only by the OS which cannot be accessed by jobs being managed by Slurm. What configuration do I need to do to achieve this? Is it possible to reserve in a similar fashion a 'percent' of the GPU which Slurm cannot exceed so that the OS has some GPU resources? Is it possible to have these configs be different for each of the 3 nodes? Thanks!

3 2

Inconsistencies in CPU time Reporting by sreport and sacct Tools
by KK 17 Apr '24

17 Apr '24

I wish to ascertain the CPU core time utilized by user dj1 and dj. I have tested with sreport cluster UserUtilizationByAccount, sreport job SizesByAccount, and sacct. It appears that sreport cluster UserUtilizationByAccount displays the total core hours used by the entire account, rather than the individual user's cpu time. Here are the specifics: Users dj and dj1 are both under the account mehpc. In 2024-04-12 ~ 2024-04-15, dj1 used approximately 10 minutes of core time, while dj used about 4 minutes. However, "sreport Cluster UserUtilizationByAccount user=dj1 start=2024-04-12 end=2024-04-15" shows 14 minutes of usage. Similarly, "sreport job SizesByAccount Users=dj start=2024-04-12 end=2024-04-15" hows about 14 minutes. Using "sreport job SizesByAccount Users=dj1 start=2024-04-12 end=2024-04-15" or "sacct -u dj1 -S 2024-04-12 -E 2024-04-15 -o "jobid,partition,account,user,alloccpus,cputimeraw,state,workdir%60" -X |awk 'BEGIN{total=0}{total+=$6}END{print total}'" yields the accurate values, which are around 10 minutes for dj1. Attachment are the details.

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Association limit problem
by Gestió Servidors 17 Apr '24

17 Apr '24

Hello, I'm doing some test with "associations" with "sacctmgr". I have created three users (user_1, user_2 and user_3). For each of these users, I have created an association: [root@myserver log]# sacctmgr show user user_1 --associations User Def Acct Admin Cluster Account Partition Share Priority MaxJobs MaxNodes MaxCPUs MaxSubmit MaxWall MaxCPUMins QOS Def QOS ---------- ---------- --------- ---------- ---------- ---------- --------- ---------- ------- -------- -------- --------- ----------- ----------- -------------------- --------- user_1 test None q50004 test aolin.q 1 4 2 10 normal user_1 test None q50004 test cuda-staf+ 1 4 2 10 normal [root@myserver log]# sacctmgr show user user_2 --associations User Def Acct Admin Cluster Account Partition Share Priority MaxJobs MaxNodes MaxCPUs MaxSubmit MaxWall MaxCPUMins QOS Def QOS ---------- ---------- --------- ---------- ---------- ---------- --------- ---------- ------- -------- -------- --------- ----------- ----------- -------------------- --------- user_2 test None q50004 test cuda-int.q 1 4 normal [root@myserver log]# sacctmgr show user user_3 --associations User Def Acct Admin Cluster Account Partition Share Priority MaxJobs MaxNodes MaxCPUs MaxSubmit MaxWall MaxCPUMins QOS Def QOS ---------- ---------- --------- ---------- ---------- ---------- --------- ---------- ------- -------- -------- --------- ----------- ----------- -------------------- --------- user_3 test None q50004 test research.q 1 2 1 normal user_3 test None q50004 test xeon.q 1 2 1 normal All users belong to "Test" account: [root@myserver log]# sacctmgr show account test --association Account Descr Org Cluster ParentName User Share Priority GrpJobs GrpNodes GrpCPUs GrpMem GrpSubmit GrpWall GrpCPUMins MaxJobs MaxNodes MaxCPUs MaxSubmit MaxWall MaxCPUMins QOS Def QOS ---------- -------------------- -------------------- ---------- ---------- ---------- --------- ---------- ------- -------- -------- ------- --------- ----------- ----------- ------- -------- -------- --------- ----------- ----------- -------------------- --------- test test test q50004 root 1 normal test test test q50004 user_1 1 4 2 10 normal test test test q50004 user_1 1 4 2 10 normal test test test q50004 user_2 1 4 normal test test test q50004 user_3 1 2 1 normal test test test q50004 user_3 1 2 1 normal When I submit with "user_1", all tests are running fine: some jobs are queued and executed and some jobs are rejected because of the limits. However, with users "user_2" and "user_3" I can't submit any job. All jobs are rejected with these messages: 11168 research. test user_3 PENDING 0:00 2024-04-17T12:53:21 N/A 1 1 OK N/A (AssocMaxCpuPerJo (null) 11173 research. test user_3 PENDING 0:00 2024-04-17T13:06:02 N/A 1 1 OK N/A (AssocMaxCpuPerJo (null) 11174 research. test user_3 PENDING 0:00 2024-04-17T13:06:16 N/A 1 1 OK N/A (AssocMaxCpuPerJo (null) 11176 research. test user_3 PENDING 0:00 2024-04-17T13:07:23 N/A 1 1 OK N/A (AssocMaxCpuPerJo (null) 11180 research. test user_3 PENDING 0:00 2024-04-17T13:08:45 N/A 1 1 OK N/A (AssocMaxCpuPerJo (null) For example, user "user_3" are trying to submit in this way (test.sh script only is a simple "sleep 50": sbatch -p aolin.q -N 2 ./test.sh --> sbatch: error: Batch job submission failed: Invalid account or account/partition combination specified sbatch -p aolin.q -N 1 ./test.sh --> sbatch: error: Batch job submission failed: Invalid account or account/partition combination specified sbatch -p research.q -N 1 ./test.sh --> submitted but not running --> nodelist(reason)= (AssocMaxCpuPerJobLimit) -> WHY??? sbatch -p research.q -N 1 -n 1 ./test.sh --> submitted but not running --> nodelist(reason)= (AssocMaxCpuPerJobLimit) --> WHY??? sbatch -p xeon.q -N 1 -n 1 ./test.sh --> submitted and running!! [root@myserver log]# squeue JOBID PARTITION NAME USER STATE TIME SUBMIT_TIME START_TIME NODE CPUS OVER_S TRES_PER_NODE NODELIST(REASON) DEPENDENCY REQ_NODES NODELIST 11202 research. test user_3 PENDING 0:00 2024-04-17T13:33:31 N/A 1 1 OK N/A (AssocMaxCpuPerJo (null) 11200 research. test user_3 PENDING 0:00 2024-04-17T13:33:17 N/A 1 1 OK N/A (AssocMaxCpuPerJo (null) 11212 xeon.q test user_3 RUNNING 0:18 2024-04-17T13:36:10 2024-04-17T13:36:10 1 1 OK N/A aolin-cpu-1 (null) aolin-cpu-1 Why? What am I doing wrong? Where is the limit that I am not seeing? Thanks a lot!

1 0

Redirect jobs submitted to old partition to new
by wdennis＠nec-labs.com 16 Apr '24

16 Apr '24

Hi all, I have a single-partition Slurm cluster (the single partition name being "default_queue") that I now want to implement multiple different queues on to subdivide the resources. Say the new default queue is "queue1"; Should I set the "default_queue" to `State=INACTIVE` and then use `Alternate=queue1` on it to redirect jobs sent to the old "default_queue" to end up on "queue1"? Thinking it would be nice to have an AltPartitionName= construct to handle this... (must be a reason this doesn't exist)

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Slurm version 23.11.6 is now available
by Marshall Garey 16 Apr '24

16 Apr '24

We are pleased to announce the availability of Slurm version 23.11.6. The 23.11.6 release includes two different problems with the priority/multifactor plugin: a crash and a miscalculation of AssocGrpCPURunMinutes after a slurmctld reconfiguration/restart. The wsrep_on errors that sites running MySQL or older MariaDB should happen much less frequently and has a clarifying statement when it is an innocuous error. Slurm can be downloaded from https://www.schedmd.com/downloads.php . -Marshall > * Changes in Slurm 23.11.6 > ========================== > -- Avoid limiting sockets per node to one when using gres enforce-binding. > -- slurmrestd - Avoid permission denied errors when attempting to listen on > the same port multiple times. > -- Fix GRES reservations where the GRES has no topology > (no cores= in gres.conf). > -- Ensure that thread_id_rpc is gone before priority_g_fini(). > -- Fix scontrol reboot timeout removing drain state from nodes. > -- squeue - Print header on empty reponse to `--only-job-state`. > -- Fix slurmrestd not ending job properly when xauth is not present and a x11 > job is sent. > -- Add experimental job state caching with > SchedulerParameters=enable_job_state_cache to speed up querying job states > with squeue --only-job-state. > -- slurmrestd - Correct dumping of invalid ArrayJobIds returned from > 'GET /slurm/v0.0.40/jobs/state'. > -- squeue - Correct dumping of invalid ArrayJobIds returned from > `squeue --only-job-state --{json|yaml}`. > -- If scancel --ctld is not used with --interactive, --sibling, or specific > step ids, then this option issues a single request to the slurmctld to > signal all jobs matching the specified filters. This greatly improves > the performance of slurmctld and scancel. The updated --ctld option also > fixes issues with the --partition or --reservation scancel options for jobs > that requested multiple partitions or reservations. > -- slurmrestd - Give EINVAL error when failing to parse signal name to numeric > signal. > -- slurmrestd - Allow ContentBody for all methods per RFC7230 even if ignored. > -- slurmrestd - Add 'DELETE /slurm/v0.0.40/jobs' endpoint to allow bulk job > signaling via slurmctld. > -- Fix combination of --nodelist and --exclude not always respecting the > excluded node list. > -- Fix jobs incorrectly allocating nodes exclusively when started on a > partition that doesn't enforce it. This could happen if a multi-partition > job doesn't specify --exclusive and is evaluated first on a partition > configured with OverSubscribe=EXCLUSIVE but ends up starting in a partition > configured with OverSubscribe!=EXCLUSIVE evaluated afterwards. > -- Setting GLOB_SILENCE flag no longer exposes old bugged behavior. > -- Fix associations AssocGrpCPURunMinutes being incorrectly computed for > running jobs after a controller reconfiguration/restart. > -- Fix scheduling jobs that request --gpus and nodes have different node > weights and different numbers of gpus. > -- slurmrestd - Add "NO_CRON_JOBS" as possible flag value to the following: > 'DELETE /slurm/v0.0.40/jobs' flags field. > 'DELETE /slurm/v0.0.40/job/{job_id}?flags=' flags query parameter. > -- Fix scontrol segfault/assert failure if the TRESPerNode parameter is used > when creating reservations. > -- Avoid checking for wsrep_on when restoring streaming replication settings. > -- Clarify in the logs that error "1193 Unknown system variable 'wsrep_on'" is > innocuous. > -- accounting_storage/mysql - Fix problem when loading reservations from an > archive dump. > -- slurmdbd - Fix minor race condition when sending updates to a shutdown > slurmctld. > -- slurmctld - Fix invalid refusal of a reservation update. > -- openapi - Fix memory leak of /meta/slurm/cluster response field. > -- Fix memory leak when using auth/slurm and AuthInfo=use_client_ids. -- Marshall Garey Release Management, Support, and Development SchedMD LLC - Commercial Slurm Development and Support

1 0

Fwd: sreport cluster UserUtilizationByaccount Used result versus sreport job SizesByAccount or sacct: inconsistencies
by KK 15 Apr '24

15 Apr '24

---------- Forwarded message --------- 发件人： KK <daijiangkuicgo(a)gmail.com> Date: 2024年4月15日周一 13:25 Subject: sreport cluster UserUtilizationByaccount Used result versus sreport job SizesByAccount or sacct: inconsistencies To: <slurm-users(a)schedmd.com> I wish to ascertain the CPU core hours utilized by user dj1 and dj. I have tested with sreport cluster UserUtilizationByAccount, sreport job SizesByAccount, and sacct. It appears that sreport cluster UserUtilizationByAccount displays the total core hours used by the entire account, rather than the individual user's cpu time. Here are the specifics: Users dj and dj1 are both under the account mehpc. In 2024-04-12 ~ 2024-04-15, dj1 used approximately 10 minutes of core time, while dj used about 4 minutes. However, "*sreport Cluster UserUtilizationByAccount user=dj1 start=2024-04-12 end=2024-04-15*" shows 14 minutes of usage. Similarly, "*sreport job SizesByAccount Users=dj start=2024-04-12 end=2024-04-15*" hows about 14 minutes. Using "*sreport job SizesByAccount Users=dj1 start=2024-04-12 end=2024-04-15*" or "*sacct -u dj1 -S 2024-04-12 -E 2024-04-15 -o "jobid,partition,account,user,alloccpus,cputimeraw,state,workdir%60" -X |awk 'BEGIN{total=0}{total+=$6}END{print total}'*" yields the accurate values, which are around 10 minutes for dj1. Here are the details: [root@ood-master ~]# sacctmgr list assoc format=cluster,user,account,qos Cluster User Account QOS ---------- ---------- ---------- -------------------- mehpc root normal mehpc root root normal mehpc mehpc normal mehpc dj mehpc normal mehpc dj1 mehpc normal [root@ood-master ~]# sacct -X -u dj1 -S 2024-04-12 -E 2024-04-15 -o jobid,ncpus,elapsedraw,cputimeraw JobID NCPUS ElapsedRaw CPUTimeRAW ------------ ---------- ---------- ---------- 4 1 60 60 5 2 120 240 6 1 61 61 8 2 120 240 9 0 0 0 [root@ood-master ~]# sacct -X -u dj -S 2024-04-12 -E 2024-04-15 -o jobid,ncpus,elapsedraw,cputimeraw JobID NCPUS ElapsedRaw CPUTimeRAW ------------ ---------- ---------- ---------- 7 2 120 240 [root@ood-master ~]# sreport job SizesByAccount Users=dj1 start=2024-04-12 end=2024-04-15 -------------------------------------------------------------------------------- Job Sizes 2024-04-12T00:00:00 - 2024-04-14T23:59:59 (259200 secs) Time reported in Minutes -------------------------------------------------------------------------------- Cluster Account 0-49 CPUs 50-249 CPUs 250-499 CPUs 500-999 CPUs >= 1000 CPUs % of cluster --------- --------- ------------- ------------- ------------- ------------- ------------- ------------ mehpc root 10 0 0 0 0 100.00% [root@ood-master ~]# sreport job SizesByAccount Users=dj start=2024-04-12 end=2024-04-15 -------------------------------------------------------------------------------- Job Sizes 2024-04-12T00:00:00 - 2024-04-14T23:59:59 (259200 secs) Time reported in Minutes -------------------------------------------------------------------------------- Cluster Account 0-49 CPUs 50-249 CPUs 250-499 CPUs 500-999 CPUs >= 1000 CPUs % of cluster --------- --------- ------------- ------------- ------------- ------------- ------------- ------------ mehpc root 4 0 0 0 0 100.00% [root@ood-master ~]# sreport Cluster UserUtilizationByAccount user=dj1 start=2024-04-12 end=2024-04-15 -------------------------------------------------------------------------------- Cluster/User/Account Utilization 2024-04-12T00:00:00 - 2024-04-14T23:59:59 (259200 secs) Usage reported in CPU Minutes -------------------------------------------------------------------------------- Cluster Login Proper Name Account Used Energy --------- --------- --------------- --------------- -------- -------- mehpc dj1 dj1 dj1 mehpc 14 0 [root@ood-master ~]# sreport Cluster UserUtilizationByAccount user=dj start=2024-04-12 end=2024-04-15 -------------------------------------------------------------------------------- Cluster/User/Account Utilization 2024-04-12T00:00:00 - 2024-04-14T23:59:59 (259200 secs) Usage reported in CPU Minutes -------------------------------------------------------------------------------- Cluster Login Proper Name Account Used Energy --------- --------- --------------- --------------- -------- -------- mehpc dj dj dj mehpc 14 0 [root@ood-master ~]# sacct -u dj1 -S 2024-04-12 -E 2024-04-15 -o "jobid,partition,account,user,alloccpus,cputimeraw,state,workdir%60" -X |awk 'BEGIN{total=0}{total+=$6}END{print total}' 601 [root@ood-master ~]# sacct -u dj -S 2024-04-12 -E 2024-04-15 -o "jobid,partition,account,user,alloccpus,cputimeraw,state,workdir%60" -X |awk 'BEGIN{total=0}{total+=$6}END{print total}' 240 [root@ood-master ~]# sreport cluster AccountUtilizationByUser accounts=mehpc start=2024-01-01 end=2024-04-15 -------------------------------------------------------------------------------- Cluster/Account/User Utilization 2024-01-01T00:00:00 - 2024-04-14T23:59:59 (9072000 secs) Usage reported in CPU Minutes -------------------------------------------------------------------------------- Cluster Account Login Proper Name Used Energy --------- --------------- --------- --------------- -------- -------- mehpc mehpc 14 0 mehpc mehpc dj dj dj 14 0 mehpc mehpc dj1 dj1 dj1 14 0

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