reducing post-processing of XIOS output #204
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…ing. functional switching; only post process on ugrid planar projected. XIOS3 compatibility.
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EdHone
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Overall a well-formatted change that dramatically reduces our dependency on file post-processing in the majority of cases which will enhance the resilience of our code. It's good that the flag for post-processing is decided on a file-by-file basis.
- Could you please re-name the PR to more accurately reflect the scope of the changes (i.e. reducing post-processing of XIOS output) as there are more changes that need to be made before we can run with XIOS3.
- It would also be good to see a side-by-side comparison of the NetCDF headers of output files (say from C12 NWP runs) to confirm that the contents are similar (this can be handled on the linked ticket in #lfric_apps#90)
- It would be nice to implement an integration test which confirm that the file format is correct when the frt scalar is incuded in the iodef.xml - I'm happy if you want to create this as a separate issue
mo-marqh
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PR Summary
Sci/Tech Reviewer: @EdHone
Code Reviewer: @ericaneininger
This PR refactors the metadata manipulation that is currently done within a file post processing function.
Only one post processing operation remains, which is only needed in the edge case of a limited area model using projected coordinates. This may be able to be done with XIOS in future, but right now this remains a feature gap.
For all other metadata specifications, these are implemented using XIOS, and removed from post processing.
This also removes the need for MPI
init_wait()calls from most usage patterns.This change introduces a soft requirement for new XML configuration, forecast reference times will only be output if an appropriately named scalar is provided, normally through XML configuration files (see linked PR)
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Test Suite Results - lfric_core - xios3-compatibility-stable3/run2
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✅ succeeded tasks - 372
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