MPI crash when using channel_option = 2 (diffusive wave routing) even with compound_channel = .FALSE.

[Hai Dong]

Hi all,

I am encountering a reproducible MPI crash when running WRF-Hydro with
channel_option = 2 (diffusive wave routing). The same configuration runs correctly in single-core mode, but fails under MPI, regardless of io_form_outputs.

The error consistently indicates missing CHAN_DEPTH, followed by a memory corruption abort.

I have attached files  two namelist for WRFHydro.

Hope anyone could help me out! Thanks a lot.

Best wishes!

Hai