Apptainer
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What is Apptainer?
Apptainer is an open source container platform designed to be simple, fast, and secure. Many container platforms are available, but Apptainer is designed for ease-of-use on shared systems and in high performance computing (HPC) environments. It features:
- An immutable single-file container image format, supporting cryptographic
signatures and encryption.
- Integration over isolation by default. Easily make use of GPUs, high speed
networks, parallel filesystems on a cluster or server.
- Mobility of compute. The single file SIF container format is easy to transport
and share.
- A simple, effective security model. You are the same user inside a container
as outside, and cannot gain additional privilege on the host system by default.
Apptainer is open source software, distributed under the BSD License.
Apptainer was formerly known as Singularity and is now a part of the Linux Foundation. When migrating from Singularity see the admin migration documentation and user compatibility documentation.
Getting Started with Apptainer
To install Apptainer from source, see the installation instructions. For other installation options, see our guide.
System administrators can learn how to configure Apptainer, and get an overview of its architecture and security features in the administrator guide.