Job Types

The clusters are designed for different work loads, and each cluster has several types of jobs. This page gives an overview of the available job types on each cluster, and their main characteristics. See the sub pages of each cluster for a more detailed description of the job types and their purposes.

You should always choose the job type that fulfils the resource requirements of your job best without being excessive as this ensures the highest possible priority and therefore the shortest queuing time. If for example your job on Saga needs 20GB memory and 5 CPUs for 5 days, you should choose a normal instead of a bigmem job. If it instead needs 200GB memory you should use bigmem.

Betzy

Name Description Job limits Max walltime Priority
normal default job type 8--256 nodes 4 days normal
preproc pre-/postprocessing jobs 1 node 1 day normal
devel development jobs (compiling, testing) 1--4 nodes 20 mins high

Betzy Job Types.

Fram

Name Description Job limits Max walltime Priority
normal default job type 4--32 nodes 7 days normal
preproc pre-/postprocessing jobs 1 node 1 day normal
bigmem jobs needing more memory 14 days normal
devel development jobs (compiling, testing) 1--4 nodes 30 mins high
short short jobs 1--10 nodes 2 hours high
optimist jobs w/checkpointing, or very short jobs 4--32 nodes see details low

Fram Job Types.

Saga

Name Description Job limits Max walltime Priority
normal default job type 1--256 units 7 days normal
bigmem jobs needing more memory 1--256 units 14 days normal
accel jobs needing GPUs 1--256 units 14 days normal
devel development jobs (compiling, testing)1 1--128 units 2 hours high
optimist jobs w/checkpointing, or very short jobs 1--256 units see details low

For jobs that don't request GPUs or much memory, the units on Saga are simply the number of cpus the job requests. For other jobs, see here for how the units are calculated.

Saga Job Types.

1. On Saga it is possible to combine devel with accel or bigmem, see details.

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