![]() Guido is currently queueing in the aegir partition with his job cesmi6ga waiting for a free available nodes (PD). Nutrik is running in the aegir partition, on nodes and two different jobs. Squeue -p aegir command is used to show the jobs in the queueing system. Node 164 has a job running (CPUAlloc), it also shows that there are 2 threads per core (ThreadsPerCore), 32 cores available (CPUTot), amount of memory on the node (RealMemory in Mb) and free disk space (TmpDisk) etc. This output, which is edited for length, shows us a number of things: State=ALLOCATED ThreadsPerCore=2 TmpDisk=0 Weight=1 Owner=N/A MCS_label=N/AīootTime=T21:52:54 SlurmdStartTime=T18:09:02ĬurrentWatts=0 LowestJoules=0 ConsumedJoules=0ĮxtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s NodeAddr=node164 NodeHostName=node164 Version=18.08 Scontrol show Node=node164 shows information about node164 NodeName=node164 Arch=x86_64 CoresPerSocket=8 It is important to understand that “TotalCPUs=1312” number shows how many cores + threads (2 per core) are at maximum available on the DC 3 cluster. The walltime limit on the aegir partition is 1 day (MaxTime=1-00:00:00) State=UP TotalCPUs=1312 TotalNodes=29 SelectTypeParameters=NONEĭefMemPerNode=UNLIMITED MaxMemPerNode=UNLIMITEDĪnyone can submit a job to the aegir partition (AllowGroups=ALL) PriorityJobFactor=320 PriorityTier=1 RootOnly=NO ReqResv=NO OverSubscribe=NO MaxNodes=UNLIMITED MaxTime=1-00:00:00 MinNodes=0 LLN=NO MaxCPUsPerNode=UNLIMITED Scontrol show partition aegir PartitionName=aegirĪllowGroups=ALL AllowAccounts=ALL AllowQos=ALLĭefaultTime=NONE DisableRootJobs=YES ExclusiveUser=NO GraceTime=0 Hidden=NO To see detail specifics of all partitions, one must use: Node named like 164-180 have 16 CPU cores and nodes 441-452 have 32 CPU cores per node. This shows that there are 29 nodes available (up) in the aegir partition, 28 of them are ocuppied (alloc) and 1 is free (idle) with maximum runtime per job (TIMELIMIT) of 24 hours. Sinfo -p aegir is used to show the state of partitions and nodes managed by SLURM: PARTITION AVAIL TIMELIMIT NODES STATE NODELISTĪegir up 1-00:00:00 28 alloc node ![]() These are the SLURM commands frequently used on DC 3: The partitions can be considered job queues, each of which has an assortment of constraints such as job size limit, job time limit, users permitted to use it, etc. ![]() The entities managed by these SLURM daemons, include nodes, the compute resource in SLURM, partitions, which group nodes into logical (possibly overlapping) sets, jobs, or allocations of resources assigned to a user for a specified amount of time, and job steps, which are sets of (possibly parallel) tasks within a job. The Simple Linux Utility for Resource Management (SLURM) is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. SLURM Workload Manager Running Jobs General Danish Center for Climate Computing (DC 3)
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