NEMO2/Containers - Revision history

M Janczyk: /* Note on Docker */

2026-05-07T17:16:44Z

Note on Docker

← Older revision		Revision as of 19:16, 7 May 2026
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	== Note on Docker ==		== Note on Docker ==

	Plain Docker is '''not available''' on NEMO. ~~Use~~ Enroot to ~~pull~~ ~~and~~ ~~run~~ Docker images, or ~~build~~ a ~~<tt>.sif</tt> with Apptainer on~~ a ~~machine where you have~~ Docker ~~installed and copy it over~~.		Plain Docker is '''not available''' on NEMO. Both Enroot and Apptainer can pull Docker/OCI images directly from registries without a local Docker installation.

M Janczyk at 17:04, 7 May 2026

2026-05-07T17:04:34Z

← Older revision		Revision as of 19:04, 7 May 2026
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	\|-		\|-
	!		!
	! [[Containers/Enroot\|Enroot + Pyxis]] (recommended)		! [[NEMO2/Containers/Enroot\|Enroot + Pyxis]] (recommended)
	! [[Containers/Apptainer\|Apptainer / Singularity]]		! [[NEMO2/Containers/Apptainer\|Apptainer / Singularity]]
	\|-		\|-
	\| '''Image source'''		\| '''Image source'''
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	; Enroot + Pyxis		; Enroot + Pyxis
	: Use this if you want to run Docker images directly from a registry, submit containerised jobs via <tt>srun</tt>/<tt>sbatch</tt>, or need tight GPU integration.		: Use this if you want to run Docker images directly from a registry, submit containerised jobs via <tt>srun</tt>/<tt>sbatch</tt>, or need tight GPU integration.
	: [[Containers/Enroot\|→ Enroot & Pyxis details]]		: [[NEMO2/Containers/Enroot\|→ Enroot & Pyxis details]]

	; Apptainer		; Apptainer
	: Use this if you have an existing <tt>.sif</tt> image, are working with a workflow that builds Apptainer/Singularity images, or need a self-contained portable image you can copy between systems.		: Use this if you have an existing <tt>.sif</tt> image, are working with a workflow that builds Apptainer/Singularity images, or need a self-contained portable image you can copy between systems.
	: [[Containers/Apptainer\|→ Apptainer details]]		: [[NEMO2/Containers/Apptainer\|→ Apptainer details]]

	== Note on Docker ==		== Note on Docker ==

M Janczyk: Created page with "NEMO supports two container runtimes for different use cases. Neither requires root privileges and both integrate with the cluster's shared filesystems (`/home`, `/work`). == Overview == {| class="wikitable" |- ! ! Enroot + Pyxis (recommended) ! Apptainer / Singularity |- | '''Image source''' | Docker Hub, NGC, any OCI registry | Apptainer Hub, Docker (via conversion), SIF files |- | '''Image format''' | Squa..."

2026-05-07T11:28:12Z

Created page with "NEMO supports two container runtimes for different use cases. Neither requires root privileges and both integrate with the cluster's shared filesystems (<tt>/home</tt>, <tt>/work</tt>). == Overview == {| class="wikitable" |- ! ! Enroot + Pyxis (recommended) ! Apptainer / Singularity |- | '''Image source''' | Docker Hub, NGC, any OCI registry | Apptainer Hub, Docker (via conversion), SIF files |- | '''Image format''' | Squa..."

New page

NEMO supports two container runtimes for different use cases.
Neither requires root privileges and both integrate with the cluster's shared filesystems (<tt>/home</tt>, <tt>/work</tt>).

== Overview ==

{| class="wikitable"
|-
!
! [[Containers/Enroot|Enroot + Pyxis]] (recommended)
! [[Containers/Apptainer|Apptainer / Singularity]]
|-
| '''Image source'''
| Docker Hub, NGC, any OCI registry
| Apptainer Hub, Docker (via conversion), SIF files
|-
| '''Image format'''
| SquashFS (<tt>.sqsh</tt>)
| SIF (<tt>.sif</tt>)
|-
| '''Slurm integration'''
| Native via Pyxis plugin (<tt>--container-name</tt> etc.)
| Manual — wrap in batch script
|-
| '''GPU support'''
| Automatic, no extra flags needed
| Via <tt>--nv</tt> flag
|-
| '''Installation'''
| System-wide, always available
| System-wide, always available
|-
| '''Best for'''
| Docker-based workflows, GPU workloads, Slurm batch jobs
| Existing SIF images, reproducible science, portability
|}

== When to use what ==

; Enroot + Pyxis
: Use this if you want to run Docker images directly from a registry, submit containerised jobs via <tt>srun</tt>/<tt>sbatch</tt>, or need tight GPU integration.
: [[Containers/Enroot|→ Enroot & Pyxis details]]

; Apptainer
: Use this if you have an existing <tt>.sif</tt> image, are working with a workflow that builds Apptainer/Singularity images, or need a self-contained portable image you can copy between systems.
: [[Containers/Apptainer|→ Apptainer details]]

== Note on Docker ==

Plain Docker is '''not available''' on NEMO. Use Enroot to pull and run Docker images, or build a <tt>.sif</tt> with Apptainer on a machine where you have Docker installed and copy it over.