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Partitions

This page lists the available Slurm partitions on Devana and their configuration limits. For a general explanation of partitions and how to use them, see the Shared Guides → Partitions section.

Available Partitions

Partition Nodes Time limit
(d-hh:mm)		 Job size limit
(nodes/cores)		 GPUs Priority factor
testing login01,login02 0-00:30 1/16 1 0.0
gpu n141-n148 2-00:00 1/64 4 0.0
short n001-n140 1-00:00 8/512 0 1.0
medium n001-n140 2-00:00 4/256 0 0.5
long n001-n140 4-00:00 1/64 0 0.0

Viewing Partition Status

The current state of partitions and nodes can be displayed using the sinfo command:

sinfo

sinfo output

PARTITION AVAIL  TIMELIMIT  NODES  STATE NODELIST
ncpu         up 1-00:00:00     22 drain* n[014-021,026-031,044-051]
ncpu         up 1-00:00:00     10    mix n[001-002,025,052,058,067,073,079,081,105]
ncpu         up 1-00:00:00     86  alloc n[003-008,012-013,022-024,032-033,036-043,053-057,059-066,068-072,074,077-078,080,082-094,097-099,102-104,106-116,119-127,131,135-136,140]
ncpu         up 1-00:00:00     22   idle n[009-011,034-035,075-076,095-096,100-101,117-118,128-130,132-134,137-139]
ngpu         up 2-00:00:00      4    mix n[141-143,148]
ngpu         up 2-00:00:00      1  alloc n144
ngpu         up 2-00:00:00      3   idle n[145-147]
testing      up      30:00      2   idle login[01-02]
gpu          up 2-00:00:00      4    mix n[141-143,148]
gpu          up 2-00:00:00      1  alloc n144
gpu          up 2-00:00:00      3   idle n[145-147]
short*       up 1-00:00:00     22 drain* n[014-021,026-031,044-051]
short*       up 1-00:00:00     10    mix n[001-002,025,052,058,067,073,079,081,105]
short*       up 1-00:00:00     86  alloc n[003-008,012-013,022-024,032-033,036-043,053-057,059-066,068-072,074,077-078,080,082-094,097-099,102-104,106-116,119-127,131,135-136,140]
short*       up 1-00:00:00     22   idle n[009-011,034-035,075-076,095-096,100-101,117-118,128-130,132-134,137-139]
medium       up 2-00:00:00     22 drain* n[014-021,026-031,044-051]
medium       up 2-00:00:00     10    mix n[001-002,025,052,058,067,073,079,081,105]
medium       up 2-00:00:00     86  alloc n[003-008,012-013,022-024,032-033,036-043,053-057,059-066,068-072,074,077-078,080,082-094,097-099,102-104,106-116,119-127,131,135-136,140]
medium       up 2-00:00:00     22   idle n[009-011,034-035,075-076,095-096,100-101,117-118,128-130,132-134,137-139]
long         up 4-00:00:00     22 drain* n[014-021,026-031,044-051]
long         up 4-00:00:00     10    mix n[001-002,025,052,058,067,073,079,081,105]
long         up 4-00:00:00     86  alloc n[003-008,012-013,022-024,032-033,036-043,053-057,059-066,068-072,074,077-078,080,082-094,097-099,102-104,106-116,119-127,131,135-136,140]
long         up 4-00:00:00     22   idle n[009-011,034-035,075-076,095-096,100-101,117-118,128-130,132-134,137-139]

The * in the partition name indicates the default partition. Nodes may appear multiple times if they are currently in different states such as idle, mix, or alloc.

Viewing Detailed Partition Configuration

To display detailed configuration parameters for partitions, use:

scontrol show partitions

or for a specific partition:

scontrol show partition long
scontrol show partition long output 
scontrol show partition long
  ParrtitionName=long 
  AllowGroups=ALL AllowAccounts=ALL AllowQos=ALL 
  AllocNodes=ALL Default=NO QoS=N/A 
  DefaultTime=4-00:00:00 DisableRootJobs=NO ExclusiveUser=NO GraceTime=0 Hidden=NO 
  MaxNodes=1 MaxTime=4-00:00:00 MinNodes=0 LLN=NO MaxCPUsPerNode=UNLIMITED 
  Nodes=n[001-140] 
  PriorityJobFactor=0 PriorityTier=1 RootOnly=NO ReqResv=NO OverSubscribe=NO 
  OverTimeLimit=NONE PreemptMode=OFF 
  State=UP TotalCPUs=8960 TotalNodes=140 SelectTypeParameters=NONE 
  JobDefaults=(null) 
  DefMemPerCPU=4000 MaxMemPerNode=UNLIMITED 
  TRES=cpu=8960,mem=35000G,node=140,billing=8960 
  TRESBillingWeights=CPU=1.0,Mem=0.256G

This command provides information such as node lists, runtime limits, memory settings, and scheduling parameters.

Additional partitions

The commands sinfo and scontrol show partitions also list partitions ncpu and ngpu. These are internal scheduler aliases mapping to the short and gpu partitions, respectively.

Notes on Scheduling Behavior

  • Short partitions (higher priority) are scheduled faster but impose stricter limits.
  • Long partitions (lower priority) allow extended runtime but may queue longer.
  • High-memory partitions are constrained but optimized for memory-heavy workloads.
  • GPU partitions carry significantly higher billing weight, so inefficient usage is penalized.

Walltime estimation and job efficiency

The maximum allowed runtime for regular jobs on Devana is 4 days (4-00:00:00). Estimating job runtime accurately can significantly improve scheduling efficiency. As your workloads mature, check previous job performance using the seff command and adjust the #SBATCH -t parameter in your job scripts accordingly. Shorter jobs are typically scheduled faster.

Created by: Andrej Sec