Test FMS and MOM5 compiler flag harmonisation

[dougiesquire]

This PR is to create a prerelease to test the FMS and MOM5 compiler flag harmonisation in ACCESS-NRI/FMS#27 and ACCESS-NRI/MOM5#91

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🚀 The latest prerelease access-om2/pr161-3 at c8f602b is here: #161 (comment) 🚀

[github-actions]

🚀 Attempted to deploy access-om2 Prerelease pr161-2 with commit c8f602b

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-om2 Prerelease pr161-1 with commit 322d18f

🖥️ Gadi Deployment ❌

[dougiesquire]

!redeploy

[github-actions]

🚀 Attempted to deploy access-om2 Prerelease pr161-3 with commit c8f602b

🖥️ Gadi Deployment ✔️

Usage Instructions

access-om2, defined in spack.yaml, will be deployed to Gadi as:

• 2026.08.000 as a Release (when merged).
• pr161-3 as a Prerelease (during this PR).

This Prerelease is accessible on Gadi using:

module use /g/data/vk83/prerelease/modules
module load access-om2/pr161-3

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-om2-pr161-3 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 access/v1.1
• access-nri/access-spack-packages version afe0308d6fd89d1b81c7772f3f223c31ad0f79e8
• access-nri/spack-config version 2026.08.001

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

[dougiesquire]

!update-configs

[github-actions]

🔧 Opening/Updating Model Configuration PRs in ACCESS-NRI/access-om2-configs

Configurations Requested

Configurations requested from profile default:

• dev-025deg_jra55_iaf

• dev-1deg_jra55_ryf+wombatlite

Pull Requests Opened/Updated

The following PRs were opened/updated:

• Auto update dev-025deg_jra55_iaf to use access-om2/pr161-3 access-om2-configs#382

• Auto update dev-1deg_jra55_ryf+wombatlite to use access-om2/pr161-3 access-om2-configs#381

More details can be found in the workflow run: https://github.com/ACCESS-NRI/ACCESS-OM2/actions/runs/32479246422

[dougiesquire]

!update-configs

✅ Repro tests pass