(RESOLVED) WRF crashes with "forrtl: severe (174): SIGSEGV, segmentation fault occurred"

[mpletch1]

Hi all,

I am attempting to run WRF with a 12 km parent domain and 4 km nested domain. I recently increased the size of my 4 km nested domain and adjusted its location inside the parent domain and I'm now having issues while running wrf.exe. When I run wrf.exe, WRF only outputs one file for each domain and then stops. When looking at an rsl.error file, I found one that gives the following error:

forrtl: severe (174): SIGSEGV, segmentation fault occurred
Image PC Routine Line Source
wrf.exe 00000000030AF39D for__signal_handl Unknown Unknown

Stack trace terminated abnormally.

I have already attempted to redownload my initialization data and rerun WRF that way, but it's still giving me the same error. Before I changed the number of grid points in my nested domain, the model was running fine, so I'm wondering if it's related to WRF crashing. I have attached my namelist.input, namelist.wps, and rsl.error.0072 files for reference. Any help is greatly appreciated.

Thanks,
Michael

 

[kwerner]

Hi Michael,
When you increased the size of the domains, did you also increase the number of processors you're using? Take a look at this FAQ that discusses how to choose a good number of processors. Depending on different physics/dynamics settings, etc. you may need more than the amount calculated as the "rule of thumb."

 

[mpletch1]

Hi,

I was able to successfully run WRF by increasing the number of nodes from 6 to 9 in my run_wrf file. I did not make any further changes to the domain dimensions to get it to run.

 

[kwerner]

That's great news! I'm glad to hear it. Thank you for updating the post.