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- To work interactively on a compute node use salloc. You can use all options (more CPU, RAM, time, partition, qos, ...) described below.
- To submit a job from the login nodes to the compute nodes you need slurm (job scheduler, batch queueing system and workload manager)
A submitted job has/needs the following information/resources:
What Use Default Comment A Name -J or --job-name=
Account -A or --account= -- New on albedo (was not necessary on ollie) Number of nodes -N or --nodes=
1 Number of (MPI-)tasks (per node) -n or --ntasks=
--ntasks-per-node=
1 Needed for MPI Number of cores/threads per task -c or --cpus-per-task=
1 Needed for OpenMP
If -n N and -c C is given, you get NxC N x C cores.Memory/RAM per CPU
--mem=
ntasks x nthreads x 1.6 GB Only needed for smp-jobs, mpp-jobs get whole nodes (cores and memory) A maximum Maximum walltime
-t or --time=01:00 A partitionPartition -p or --partition=smp A qos (quality of service) -q or --qos= normal - Please take a look at our examples scripts (from ollie) SLURM Example Scripts
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