Derecho Checklist

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Soren Rasmussen edited this page Oct 18, 2023 · 14 revisions

Derecho is the new HPC cluster and there are some changes to WRF-Hydro that will help improve performance.

Improvements

Performance

Use more MPI Collectives for better performance
Look into adding Do Concurrent: are overland routing sections good candidates for this?

Reduce number of files for file system

Reduce Number of Input Files
- Possibly Related issues
  - #504 Allow for forcing files with multiple time steps per file

Method for reducing amount of input files	Pros	Cons
Add hourly time dimension in restart files

Reduce Number of Output Files
- Possibly Related issues
  - #481 Add infrastructure to support flexibility for hydro output frequencies
  - #103 Add separate rtout frequency to hydro.namelist options
  - #229 Expand restart frequency options beyond hourly and monthly
  - #301 LDASOUT at init time
  - #448 Time dimensions should be associated with relevant variables in point output files
  - #627 Restart runs: internal times in CHANOBS and CHRTOUT_DOMAIN files are incorrect

Method for reducing amount of output files	Pros	Cons
Add hourly time dimension in output files

Bugs

with Cray compiler -O3 breaks wrf-hydro

Wishlist

eliminate warnings from Cray compiler