LANL led with LLNL contributors, Charliecloud provides user-defined software stacks for HPC centers. It uses Linux user namespaces to run containers with no privileged operations or daemons and minimal configuration changes on center resources. In version 0.24, ch-image is architecture aware, and the ch-run --bind destination path defaults to host. Many other commands are updated or improved, and the mailing list is set to announce-only.
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