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module_sf_ruclsm imprecision breaks gfortran in debug mode for RRFS tests #5

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SamuelTrahanNOAA opened this issue Sep 22, 2022 · 0 comments · Fixed by #6 or ufs-community/ufs-weather-model#1437
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module_sf_ruclsm imprecision breaks gfortran in debug mode for RRFS tests #5

SamuelTrahanNOAA opened this issue Sep 22, 2022 · 0 comments · Fixed by #6 or ufs-community/ufs-weather-model#1437
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SamuelTrahanNOAA commented Sep 22, 2022 •
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Description

The module_sf_ruclsm has comparisons to zero, which break the code when numbers are very close to 0, such as 1e-322. This happens with the gfortran compiler when compled -DDEBUG=ON since the option to truncate subnormal numbers is turned off.

Steps to Reproduce

  1. Fix bugs in the fv_regional_bc.F90 that prevent RRFS from running in DEBUG=ON mode
  2. Run one of the RRFS tests in DEBUG=ON mode with the gnu compiler on Hera
  3. View the resulting core dumps using gdb
  4. Sadness

Additional Context

The model will fail much earlier, due to known bugs. I'm about to submit a PR and some issues to fix that.
@SamuelTrahanNOAA SamuelTrahanNOAA added the bug Something isn't working label Sep 22, 2022
This was referenced Sep 22, 2022
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drnimbusrain pushed a commit to noaa-oar-arl/ccpp-physics that referenced this issue May 15, 2024
@grantfirl
Merge pull request ufs-community#5 from dustinswales/update_codeowner…
dcaa3f4 
…s_grant

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@SamuelTrahanNOAA