Comments (1)
As a followup to #928, it might be useful to generate several versions (cdf1, cdf2, cdf5, hdf5) of the CICE test restart file and test the ability of the code to read those formats and be bit-for-bit reproducible between them.
This could be a good candidate for a unit test, (I haven't looked at all at the current unit tests or how they are set up.). In theory, we can assume the pio + nc interfaces work and are tested, so this can focus more on whether the writing and reading of restart files produces identical results.
Also, a slightly separate task. It would be good to implement a Derecho port that uses the spack pio install instead of the version build on Derecho. This would probably be a new "machine".
Spack and building from source should give identical results. The difference we found is because the build options are different (i.e. whether parallel-netcdf is included.). This gets tricky - because there are hundreds of combinations of build options and library versions etc within the goal of maintaining backward compatibility. One approach might be to try and get a representative sample of the possible variations. Another might be to focus on the up to date / latest stable versions + options and focus on those.
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Related Issues (20)
- ice_in variables undefined in chapter 5 of docs HOT 4
- shortwave dEdd_snicar_ad setup HOT 10
- grid_location is missing for C and CD grids for call to seabed_stress_factor_LKD HOT 1
- model abort due to dvice negative HOT 11
- Investigate T-Test in cice.t-test.py
- NLON, ELAT not computed when TLAT, TLON, ANGLET on grid file HOT 14
- Some CMIP variables are computed using a mix of U and T quantities HOT 1
- dxT and other grid length variables
- dsnow optional argument in icepack_step_therm1 HOT 2
- evp1d performance evaluation
- Support netcdf-4 compression & chunking HOT 1
- hist_avg on multiple streams writes the same filenames when .false. HOT 9
- Potential instability related to explicit treatment of Coriolis for C-grid HOT 3
- Arguments in update_state need if present. HOT 2
- dynamics U points are active when T points are not HOT 5
- Commit/PR process HOT 3
- PIO and hdf5 failures HOT 6
- tripole initial/restart file with inconsistent values on the tripole seam HOT 15
- CICE C-grid crash on 1/12 degree tripole HOT 11
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