Apptainer/Singularity at LRZ (Test Operation)
What is Apptainer/Singularity
Container solution in user space. (Singularity, Apptainer)
Getting started ...
We drive that currently in test operation.
> module use /lrz/sys/share/modules/extfiles > module av singularity ----------------------- /lrz/sys/share/modules/extfiles --------------------------- singularity/3.8.3 singularity/4.0.1_sylabs > module av apptainer ---------------------- /lrz/sys/share/modules/extfiles ---------------------------- apptainer/1.3.1
SquashFS files cannot be mounted currently on our systems. Please use unsquashfs from the squashfs module:
> module use /lrz/sys/share/modules/extfiles ----------------------- /lrz/sys/share/modules/extfiles --------------------------- squashfs/4.4
Currently, there does not exist any direct singularity-support in Slurm, generally!
Usage
That's a "hello world" equivalent. If you want to provide a more intelligent example, we would appreciate.
> singularity build --sandbox lolcow/ library://sylabs-jms/testing/lolcow
INFO: Starting build...
INFO: Downloading library image
87.9MiB / 87.9MiB [=======================================================================================================================] 100 % 3.6 MiB/s 0s
INFO: Verifying bootstrap image /dss/dsshome1/☐☐/☐☐☐☐☐☐☐/.singularity/cache/library/sha256.5022b5e7c7249c40119a875c1ace0700ced4099e077acc75d0132190254563a4
WARNING: integrity: signature not found for object group 1
WARNING: Bootstrap image could not be verified, but build will continue.
INFO: Creating sandbox directory...
INFO: Build complete: lolcow/
> ls
lolcow
> singularity run lolcow/
_________________________________________
/ You may be infinitely smaller than some \
| things, but you're infinitely larger |
\ than others. /
-----------------------------------------
\ ^__^
\ (oo)\_______
(__)\ )\/\
||----w |
|| ||