wrf.exe error segmentation fault (signal 11)

[dbwls33]

I'm trying to run WRF. It worked fine until real.exe. But if I try mpirun -np 10 wrf.exe, it won't run and I keep getting the same error. I attach some files. Please kindly help me with how to fix the error...

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= EXIT CODE: 11
= CLEANING UP REMAINING PROCESSES
= YOU CAN IGNORE THE BELOW CLEANUP MESSAGES
===================================================================================
YOUR APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11)
This typically refers to a problem with your application.
Please see the FAQ page for debugging suggestions

call init_zero_tendency
calling inc/HALO_EM_PHYS_A_inline.inc
call phy_prep
DEBUG wrf_timetoa(): returning with str = [2020-01-21_00:03:00]
call radiation_driver
Top of Radiation Driver
CALL cldfra2
CALL rrtm
CAM-CLWRF interpolated values______ year: 2020 julian day: 20.00208
CAM-CLWRF co2vmr: 3.7900000461377203E-004 n2ovmr: 3.1900000863060995E-007 ch4vmr: 1.7739999975674436E-006

 

[kwerner]

Hi,
It's hard to say for sure why the model is stopping, but I have a few suggestions.

1) I see that you're using wrfv3.6. Is there a specific reason why you need to use this older version? That code is nearly 10 years old now and several modifications and bug fixes have been implemented into the code since then. We no longer support code that old. If you're able, I would strongly recommend using a newer version of the model.

2) Your domain sizes are too small. For any realistic results, each domain needs to be at least 100x100. Take a look at the best practices mentioned on this page to help guide your domain set-up.

3) I see that you're using grid nudging. You should test to see if this runs without grid nudging (and any other special options) first. That way you can rule out whether the issue is the settings or the input data, etc.

4) Regarding input - often when the model stops right at the beginning, it means there is an issue with the input data. Take a look at What is the most common reason for a segmentation fault? for some additional information.

If you try this with the latest version of WRF (V4.5.2) and make the modifications I've mentioned above, and verify that the input data is all okay, and it still fails, please package all of your rsl* files into a single *.tar file and attach that, along with the modified namelist.input file. Thanks!