Image locations

Singularity image files can be large, and should preferably be built automatically (from a bootstrap file) and updated at regular intervals.

Due to this, we see no need to store Singularity images on /home (which is small, and backed up to tape).

Singularity has been configured to only allow using images that are stored on /proj, /software (NSC-provided images) and /scratch/local. If you have a good case for running images from /home, please let us know.

In most cases you should run your images directly from /proj (e.g singularity exec /proj/somewhere/myimage.img somecommand). If you will be executing Singularity many times from a single job, you might gain some performance by copying the image to /scratch/local at the beginning of the job.

Singularity is only available on compute nodes, not login nodes

For quick tests, you can e.g allocate a single core on a development node and run singularity there:

interactive -n1 -t 00:10:00 --reservation=now
singularity ...

or skip interactive and use srun:

srun --pty -n1 -t 00:10:00 --reservation=now singularity ...

PID name space disabled

If you have a need for this feature, let us know.


User Area

User support

Guides, documentation and FAQ.

Getting access

Applying for projects and login accounts.

System status

Everything OK!

No reported problems

Self-service

SUPR
NSC Express