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[production/GFS.v17] Add option for zstandard restart files and update FV3 hash#1068

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dpsarmie merged 1 commit into
NOAA-EMC:production/GFS.v17from
dpsarmie:v17/zstd_to_rst-update_atmos_cubed
Feb 23, 2026
Merged

[production/GFS.v17] Add option for zstandard restart files and update FV3 hash#1068
dpsarmie merged 1 commit into
NOAA-EMC:production/GFS.v17from
dpsarmie:v17/zstd_to_rst-update_atmos_cubed

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@dpsarmie dpsarmie commented Feb 18, 2026

Description

This PR will add a requested feature that is needed for GFS.v17. The current compression options apply to both the ATM output and for the restart files. A request was made to allow for separate compression options to be applied to the output and the restart files. (In this case, deflate option to the output and zstandard compression to the restart files).

This PR will allow for the compression options to be set separately in the model_configure file in UFS.

We will still need to discuss whether or not to also have this feature pushed to develop.

This PR will also change the .gitmodule files to point to the production branch made in the atmos_cubed repo.

Issue(s) addressed

Link the issues to be closed with this PR, whether in this repository, or in another repository.
(Remember, issues should always be created before starting work on a PR branch!)

Testing

How were these changes tested?
A quick test was done to make sure that the files were being compressed with the appropriate algorithm option. A full RT test will be done soon.
What compilers / HPCs was it tested with? This will be tested on WCOSS2, Gaea, and Ursa
Are the changes covered by regression tests? Yes
Have the ufs-weather-model regression test been run? On what platform? This will be tested on WCOSS2, Gaea, and Ursa

  • Will the code updates change regression test baseline? Testing in progress

Dependencies

None

@dpsarmie
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Going to go ahead and merge this. I was waiting for NOAA-GFDL/GFDL_atmos_cubed_sphere#405 but that can be pulled in a subsequent PR.

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