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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 Name -J or --job-name=
Account -A or --account= primary section, e.g.
clidyn.clidyn
computing.computingNew on albedo (was not necessary on ollie)
You can add a project (defined in eResources, you must be a member of the project) with -A <section>:.<project>. This is helpful for reporting.
e.g.,
clidyn.clidyn
computing.tsunami
clidyn.fesomNumber 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 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) Maximum walltime
-t or --time=
01:00 Partition -p or --partition=
smp 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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