Set UM to a commit ref

[Whyborn]

Testing the UM spack package update here.

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🚀 The latest prerelease access-am3/pr38-6 at 31670b6 is here: #38 (comment) 🚀

[github-actions]

The model version in the spack.yaml has not been updated.
You can update it manually.
Alternatively, comment the following to have it updated and committed automatically:

• !bump major for feature releases
• !bump minor for bugfixes

[github-actions]

🚀 Attempted to deploy access-am3 Prerelease pr38-1 with commit 61fe8ce

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-am3 Prerelease pr38-1 with commit 3dda5a8

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-am3 Prerelease pr38-2 with commit fc9f245

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-am3 Prerelease pr38-3 with commit 3da24c8

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-am3 Prerelease pr38-4 with commit dd4a4f8

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-am3 Prerelease pr38-5 with commit 3dfcadd

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-am3 Prerelease pr38-6 with commit 31670b6

🖥️ Gadi Deployment ✔️

Usage Instructions

access-am3, defined in spack.yaml, will be deployed to Gadi as:

• 2026.05.001 as a Release (when merged).
• pr38-6 as a Prerelease (during this PR).

This Prerelease is accessible on Gadi using:

module use /g/data/vk83/prerelease/modules
module load access-am3/pr38-6

When using the above modules, the binaries shall be on your $PATH.

For advanced users, this Prerelease is also accessible on Gadi via /g/data/vk83/prerelease/apps/spack/1.1/spack in the access-am3-pr38-6 environment.
Due to inode-saving measures, one will have to manually untar the environment metadata before environment activation with tar -xf .spack-env .spack-env.tar. It will require one to have write privileges.

Configuration Information

This Prerelease is deployed using:

• access-nri/spack on branch 1.1
• ACCESS-NRI/upstream-spack-packages version 2f02a99ec9dfd5dceb9bd91abc392edabd9ba963
• access-nri/access-spack-packages version 256020f0637cc9ef57f9fe5e27ac9d7d7f438623
• access-nri/spack-config version 2026.05.003

If the above was not what was expected, commit changes to config/versions.json in this PR, or propose changes to build-cds config/settings.json.