Optimized petsc build for production release of access-issm

[justinh2002]

---

🚀 The latest prerelease access-issm/pr37-4 at 428df88 is here: #37 (comment) 🚀

[aidanheerdegen]

This needs to be a version defined in the spack package. See https://github.com/ACCESS-NRI/access-spack-packages/pull/411/changes#r3097862716

[github-actions]

🚀 Attempted to deploy access-issm Prerelease pr37-1 with commit f391325

🖥️ Gadi Deployment ✔️

Usage Instructions

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

• 2026.05.0 as a Release (when merged).
• pr37-1 as a Prerelease (during this PR).

This Prerelease is accessible on Gadi using:

module use /g/data/vk83/prerelease/modules
module load access-issm/pr37-1

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-issm-pr37-1 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
• spack/spack-packages version 2f02a99ec9dfd5dceb9bd91abc392edabd9ba963
• access-nri/access-spack-packages version justinh2002/issm_release_production
• access-nri/spack-config version 2026.04.000

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.

[justinh2002]

!redeploy

[github-actions]

🚀 Attempted to deploy access-issm Prerelease pr37-2 with commit f391325

🖥️ Gadi Deployment ✔️

Usage Instructions

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

• 2026.05.0 as a Release (when merged).
• pr37-2 as a Prerelease (during this PR).

This Prerelease is accessible on Gadi using:

module use /g/data/vk83/prerelease/modules
module load access-issm/pr37-2

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-issm-pr37-2 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
• spack/spack-packages version 2f02a99ec9dfd5dceb9bd91abc392edabd9ba963
• access-nri/access-spack-packages version justinh2002/issm_release_production
• access-nri/spack-config version 2026.04.000

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.

[justinh2002]

Pine Island Glacier testing with 4546 triangles.
hmax = 30000 hmin = 50 gradation = 1.7 err = 8

Total solution time of friction inversion

1. old 2025.11.24 ISSM build took 121 seconds
2. -02 ISSM build took 82 seconds
3. -02 -DNDEBUG took 61 seconds

[github-actions]

🚀 Attempted to deploy access-issm Prerelease pr37-3 with commit 880e70f

🖥️ Gadi Deployment ❌

[github-actions]

🚀 Attempted to deploy access-issm Prerelease pr37-4 with commit 428df88

🖥️ Gadi Deployment ✔️

Usage Instructions

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

• 2026.05.0 as a Release (when merged).
• pr37-4 as a Prerelease (during this PR).

This Prerelease is accessible on Gadi using:

module use /g/data/vk83/prerelease/modules
module load access-issm/pr37-4

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-issm-pr37-4 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
• spack/spack-packages version 2f02a99ec9dfd5dceb9bd91abc392edabd9ba963
• access-nri/access-spack-packages version justinh2002/issm_release_production
• access-nri/spack-config version 2026.04.000

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.