...
A higher priority means your job is scheduled before other jobs. In addition, during working hours 10 nodes are reserved exclusively for jobs using qos=30min (to facilitate development and testing). For longer runs, another QOS (and walltime) has to be specified. Note: long running jobs (longer than 12 hours, up to 48 hours) “cost” more in terms of fairshare (meaning you priority will decrease for further jobs).
QOS | max. walltime | max. Jobs/User | UsageFactor | Priority QOS_factor | Notes | |
|---|---|---|---|---|---|---|
30min | 00:30 | :00- | 1 | 1 | default | |
12h | 12:00 | :00- | 1 | 0 | ||
48h | 48:00 | :00100 | 2 | 0 |
Job Scheduling
Priority
Jobs on albedo are scheduled based on a priority that is computed by Slurm depending on multiple factors (https://slurm.schedmd.com/priority_multifactor.html).
The higher the priority, the sooner your job begins. (In principle – the backfill scheduling plugin helps making best use of available resources by filling up resources that are reserved (and thus idle) for large higher priority jobs with small (lower priority) jobs.)
At AWI, only few of the possible factors are taken into account:
...