The ants module is a key piece of software not just for running Met Office family models but also for working on analysis of their outputs. Having transitioned from hh5 to xp65, I’ve been struggling to find out where ants is available and where it is not. Some of my previously saved settings worked…

Thanks for your efforts to get ANTS into xp65, it looks frustrating! While it would be ideal to have ANTS in analysis3, I understand this may not be possible. For a seperate environment for ANTS, to enable it to be an effective development environment for spatial datasets, it should include: dask …

Having said the above, I am confused about why ANTS can’t be incorporated in analysis3, as it seems to be working with some xp65 analysis3 modules. I just tested 25.08 and it seems to be working fine. Can you explain what the issue is with these implementations?

I think (although NRI please correct me if incorrect) it might be because of the strict way it treats its dependencies, i.e. if a dependent package in an environment is updated it can break ANTS. I spoke to Christian Stassen about this last week, and he said for BARRA-R2 they needed to create an AN…

(It might have been BARPA not BARRA - the fact that Christian S mixes the two up makes me feel justified that I do :sweat_smile: )

@rbeucher @Scott @atteggiani I’m just catching up with the deprecation of older analysis3 environments . How does the current and future status of ANTS sit within this work plan?

I’ve not looked at ANTS for a while, it is now public on github with the environment definition and conda lock file that it wants to be using - GitHub - MetOffice/ANTS: A Python library for generating UM ancillary files, developed at the Met Office (the contrib code that actually generates the ancil…

I agree with Scott, and I would add that we are planning to release new ANTS versions in a dedicated containerised environment on Gadi (similar to Scott’s ngm one). However, the main issues remain: ANTS strict dependency pinning (which makes it very hard to install in an environment together with…

Thanks @atteggiani , can you please confirm that analysis3-25.08 will remain active (currently throwing warning on load that it will soon be depreciated) until the release of the dedicated seperate ANTS environment? Can you also please confirm which other packages are planned to be included in the se…

[image] mlipson: can you please confirm that analysis3-25.08 will remain active (currently throwing warning on load that it will soon be depreciated) until the release of the dedicated seperate ANTS environment? I’ll defer to @rbeucher on this, as the ACCESS-NRI MED team is managing the analy…

Ants module availability in xp65 analysis3 kernels

Technical Infrastructure

atteggiani (Davide Marchegiani, ACCESS-NRI Atmospheric team) 29 July 2026 03:42 26

FYI, ants is now released as a stand-alone containerised environment.
This will atomatically be aupdated with new ants releases.

Topic		Replies	Views
Newer version of ANTS in analysis3 or other env on gadi? Infrastructure python , help , unresolved	10	298	29 July 2026
ANTS environment releases ACCESS-NRI Releases ants , contenvs	1	63	29 July 2026
Running xp65 analysis on ARE Infrastructure help , conda	10	419	15 June 2025
Deprecation of conda/analysis3-25.05 Coupled Model help	11	195	19 March 2026
Where do I find user documentation on the ACCESS ngm modules? Infrastructure	10	157	1 July 2025

Ants module availability in xp65 analysis3 kernels

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