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Description

This PR parallelizes the deterministic and ensemble surface increment regridding. The file IO (staging and saving to COM) is parallelized with MPMD/CFP and the regridding itself is parallelized internally to the application the regrids in ufs_utils.

Resolves #4135

Type of change

  • Bug fix (fixes something broken)
  • New feature (adds functionality)
  • Maintenance (code refactor, clean-up, new CI test, etc.)

Change characteristics

  • Is this a breaking change (a change in existing functionality)? YES
  • Does this change require a documentation update? NO
  • Does this change require an update to any of the following submodules? YES (If YES, please add a link to any PRs that are pending.)

How has this been tested?

Clone, build, and run full CI suite on Hera

Checklist

  • Any dependent changes have been merged and published
  • My code follows the style guidelines of this project
  • I have performed a self-review of my own code
  • I have commented my code, particularly in hard-to-understand areas
  • I have documented my code, including function, input, and output descriptions
  • My changes generate no new warnings
  • New and existing tests pass with my changes
  • This change is covered by an existing CI test or a new one has been added
  • Any new scripts have been added to the .github/CODEOWNERS file with owners
  • I have made corresponding changes to the system documentation if necessary

@DavidNew-NOAA DavidNew-NOAA marked this pull request as draft October 30, 2025 16:57
@DavidNew-NOAA
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I'm converting back to draft, as changes in #4117 broke something

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Parallelize the ensemble surface analysis job

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