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Examine solutions to NetCDF compatibility issue #75

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robertbartel opened this issue Apr 14, 2021 · 1 comment
Open

Examine solutions to NetCDF compatibility issue #75

robertbartel opened this issue Apr 14, 2021 · 1 comment
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dependencies Pull requests that update a dependency file

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@robertbartel
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robertbartel commented Apr 14, 2021 •
edited by hellkite500
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The pre-NextGen NWM does not operate properly with versions of NetCDF beyond 4.6. This is documented in NCAR/wrf_hydro_nwm_public#382. The DMOD workaround is to specify the version. Recently it was discovered this will need to be extended to the netcdf-fortran library also, as its latest is no longer compatible with the required older NetCDF versions.

A better long-term solution is needed. One potential option is an OWP fork of the NWM code, in which we patch the source as needed to work with the newer NetCDF code.

Current behavior

NWM (i.e., pre-NextGen) DMOD images cannot be built unless specific older versions of NetCDF C and Fortran libs are used.

Expected behavior

It should be possible to use the latest NetCDF without issue.
@hellkite500
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NCAR/wrf_hydro_nwm_public#459 patched the model IO code to make it compatible with netcdf 4.7, effectively resolving the issue. They are willing to back port this to prior NWM versions (1.2, 2.0) and tag releases for the patched branches. This would allow us to simply pull from the patched release and be able to build against current netcdf (4.7.x)

@robertbartel robertbartel added the dependencies Pull requests that update a dependency file label Jan 4, 2022
robertbartel added a commit to robertbartel/DMOD that referenced this issue Jan 31, 2022
@robertbartel
Default to better versions in nwm-deps image.
1bf6d49 
Changing Dockerfile for nwm-deps to default to appropriate versions of
NetCDF and NetCDF-Fortran given the bug in DMOD issue NOAA-OWP#75, instead of
defaulting to "latest"
robertbartel added a commit that referenced this issue Feb 4, 2022
@robertbartel
Default to better versions in nwm-deps image.
b83f231 
Changing Dockerfile for nwm-deps to default to appropriate versions of
NetCDF and NetCDF-Fortran given the bug in DMOD issue #75, instead of
defaulting to "latest"
donaldwj pushed a commit to donaldwj/DMOD that referenced this issue Jun 21, 2022
@robertbartel @donaldwj
Default to better versions in nwm-deps image.
b1cc219 
Changing Dockerfile for nwm-deps to default to appropriate versions of
NetCDF and NetCDF-Fortran given the bug in DMOD issue NOAA-OWP#75, instead of
defaulting to "latest"
christophertubbs pushed a commit to christophertubbs/DMOD that referenced this issue Jan 24, 2023
@robertbartel
Default to better versions in nwm-deps image.
acfa621 
Changing Dockerfile for nwm-deps to default to appropriate versions of
NetCDF and NetCDF-Fortran given the bug in DMOD issue NOAA-OWP#75, instead of
defaulting to "latest"
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@hellkite500 @robertbartel