[Beowulf] Singularity 1.0 is out

Douglas Eadline deadline at eadline.org
Fri Apr 15 10:20:04 PDT 2016

This is a very cool project. From the announcement:

Singularity is a container platform built around the notion of "Mobility
of Compute". With Singularity you can build executable containers based on
your host system and define what happens when that container is launched.
Processes inside the container can be single binaries, or a complex of
binaries, scripts and data.

While there are several full featured container systems that already
exist, these container solutions are feature rich as they tend to emulate
a full hardware virtualization hypervisor. Because of many of these
features (e.g. user level contexts and ability to escalate to root)
implementation on large scale multi-user resources is difficult and maybe
impossible. This is what motivated the development of Singularity; a
lightweight, non-invasive and easily implementable container system that
supports existing workflows and focuses on application portability and

In this release, you can expect the following support:

* Ability to create Singularity containers based on a package specfile
* Specfile templates can be generated automatically (singularity specgen ...)
* Support for various automatic dependency resolution
   * Dynamic libraries
   * Perl scripts and modules
   * Python scripts and modules
   * R scripts and modules
   * Basic X11 support
   * Open MPI (v2.1 - which is not yet released)
* Direct execution of Singularity containers (e.g. ./container.sapp [opts])
* Access to files in your home directory and a scratch directory
* Existing IO (pipes, stdio, stderr, and stdin) all maintained through
* Singularity internal container cache management
* Standard networking access (exactly as it does on the host)
* Singularity containers run within existing resource contexts (CGroups
and ulimits are maintained)
* Easily integrated into existing schedulers and batch scripts
* Support for scalable execution of MPI parallel jobs
* Singularity containers are portable between Linux distributions

You can download Singularity and obtain more information here:



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