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When creating an instance on Nimbus, you choose an image. This is the operating system that will be on your instance once it is created. Ubuntu is the main set of images that Nimbus staff actively provide, but we also provide Centos. You can also upload your own operating system, but then you are responsible for maintaining that image, and updating it when newer versions become available.

Which one should I use?

If you are unsure, we recommend that you choose from the Ubuntu images we provide. The table below a guide on which one to use. You can view the current list of public images in the Nimbus dashboard, by clicking Compute → Images which will take you to https://nimbus.pawsey.org.au/horizon/project/images

Image namePurposeDescription
Ubuntu 18.04 - 2020-05 - PawseyThis is a general purpose image for most people to use on Nimbus. The 18.04 LTS (Long Term Support) release is supported upstream for longer, so you will be able to keep using instances with this version for longer than others.
  • Operating system: Ubuntu
  • Version: 18.04 LTS
  • Updated: May 2020
  • Pawsey extras: Singularity, Docker, Nextflow
Ubuntu 18.04 - 2020-01 - Pawsey vGPUThis is for people who have an allocation to use a vGPU instance.
  • Operating system: Ubuntu
  • Version: 18.04 LTS
  • Updated: January 2020
  • Pawsey extras: vGPU support, Singularity, Docker
Ubuntu 20.04 - 2020-04 - PawseyThis is based on the latest LTS release of Ubuntu currently available, which may offer some newer features you need. However, as it has not been available for as long as the Ubuntu 18.04 release, it may not be as well supported by third party software or packages. Pawsey staff have installed additional software.
  • Operating system: Ubuntu
  • Version: 20.04 LTS
  • Updated: April 2020
  • Pawsey extras: Singularity, Docker, Nextflow

Ubuntu 20.04 LTS - 2020-07

This is the latest LTS release of Ubuntu currently available, which may offer some newer features you need. This is the standard image from upstream, without any additional software or configuration by Pawsey staff.
  • Operating system: Ubuntu
  • Version: 20.04 LTS
  • Updated: July 2020
  • Pawsey extras: None
CentOS 7 - 2019-11

CentOS 8 - 2020-03



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