Model run crashes over India (v4.5)

[obrousse]

Hi everyone,

I have been trying to run real case scenarios (12 km -- 3 km -- 1km) over the city of Bhubaneshwar following some idealised simulations I ran over this city. I try to deviate as little as possible to my idealised simulations configuration but I am facing issues. The model runs only for 2 seconds and then crashes calling SIGSEV. I am running the model compiled in gfortran over 36 CPUs -- I would have the option to run on another machine with more CPUs if needed.

Some basic information:

• Model is forced using ERA5 data at 6 hourly time steps
• Urban classes are based on the global LCZ embedded in WRF
• BEP-BEM activated with Bougeault Lacarrere
• NOAH-MP is used instead of NOAH-LSM
• Initial conditions are also derived from ERA5 including orography

I tried running the 1 km domain directly nested into the ERA5 data and it would run slightly longer but would still crash within the first modelled hour (at ~30 minutes).
Several tests were already perpetrated:

1. diff_opt turned from 2 to 1
2. hybrid_opt turned from 2 to 0
3. essm changed to multiple increasing values
4. smoothing of the mountain vs no smoothing
5. timestep reduced from 30 sec to 5 sec
6. changed eta_levels from 55 to 45

I hereby attach the namelists for WPS and for WRF. real.exe works fine, the problem is whilst running wrf.exe .
The error message with debug_level = 1000 is as follows:

d03 2024-05-28_18:00:00+05/12 DEBUG wrf_timetoa(): returning with str = [2024-05-28_18:00:00]
d03 2024-05-28_18:00:00+05/12 call radiation_driver
d03 2024-05-28_18:00:00+05/12 Top of Radiation Driver
d03 2024-05-28_18:00:00+05/12 calling inc/HALO_PWP_inline.inc
d03 2024-05-28_18:00:00+05/12 call surface_driver
d03 2024-05-28_18:00:00+05/12 in SFCLAY

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Kind regards,
Oscar

 

[kwerner]

Hi Oscar,

Are you running this with multiple processors? Do you have rsl* files you could share? If so, please package them all together in a single *.tar or zipped file and attach that. Thanks!