Charliecloud is a lightweight, fully unprivileged, open source container implementation for HPC applications. It can handle the entire container workflow, including building images, pushing/pulling to registries, and dealing with accelerators like GPUs.

We take a unique approach to containerization while remaining compatible with the broader container ecosystem where it matters.

The project is a member of the High Performance Software Foundation (HPSF) and, transitively, the Linux Foundation (LF).

Documentation

Select your version:

• latest (permalink to current release; v0.44 at present)
• main (current tip of development)
• v0.44
• v0.43
• v0.42
• v0.41
• v0.40
• v0.39

Note that we support only the current release.

Help and participation

We are friendly!

• Report a bug or request a feature on GitLab.com.

• Source code also on GitLab.com.

• Development status reports.

• Mailing lists:

  • announce — Charliecloud announcements. Parent for the other lists, i.e., subscribing to one of them automatically subscribes to this one.

  • users — Discussion about using Charliecloud.

  • dev — Discussion about Charliecloud development, as well as some automated development-related messages.

  • tsc-private — Private e-mail list for Charliecloud Technical Steering Committee members. Use for sensitive matters that cannot be discussed publically on dev.

• Text chat:

  • #charliecloud in the High Performance Software Foundation Slack workspace.

  • #charliecloud in the hpc-containers workspace.

  • #charliecloud in the lanl-hpc-collab team on the U.S. Department of Energy Mattermost server, which is accessible to DOE laboratories and collaborators.