3.2. apptainer

• An open-source program enabling operating system virualization (i.e. containerization)

• Creates a flexible OS environment resulting in portability and reproducibility of softwares

• Specificaly develop at Lawerence Berkeley National Lab to simplify the process of running applications on HPC clusters

• link?

• 3.2.1. apptainer build
• 3.2.2. apptainer run
• 3.2.3. apptainer shell
• 3.2.4. apptainer instance start
  • 3.2.4.1. Instances

3.3. Apptainer

• containers for softwares

3.3.1. Build

sudo apptainer build ubuntu.sif ubuntu.def
sudo apptainer build --sandbox /tmp/ubuntu docker://ubuntu:22.04

3.3.2. Run

apptainer shell ubuntu.sif
apptainer shell --contain --cleanenv ubuntu.sif 

apptainer run ubuntu.sif pwd

apptainer exec ubuntu.sif apt update