Scheduled Downtime
On Friday 21 April 2023 @ 5pm MT, this website will be down for maintenance and expected to return online the morning of 24 April 2023 at the latest

wrf.exe error. Segmentation fault (core dumped) Segmentation fault - invalid memory reference.

zwq

New member
Hello all,

I am doing a simulation on WRFV4.3 but wrf.exe fails noting "Segmentation fault (core dumped)". I get the following error in "rsl.error.00":

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

I checked the cfl error using the command 'grep cfl rel*' and indeed the error occurs within d01, but my settings are: dx=27000, time_step=81, i.e. 3 x dx, and I still have the cfl error, how can I modify namelist.input in this case? Another question is about my simulation length of 23 days, does this require a SST update?

I would really appreciate any clue about this error.

Thanks!

Attachment is my namelist.input.
 

Attachments

  • namelist.input
    4 KB · Views: 5
  • 屏幕截图 2023-11-11 141913.png
    屏幕截图 2023-11-11 141913.png
    63.2 KB · Views: 8
Thank you for your reply!

I assume that my errors about CFL result from complex terrain in d01 which is a big scope becasue this error only exist in d01 rather than in all domains. As a result, I will first try add 'epssm = 0.2, 0.1, 0.1' in my namelist.input and change my time_step from 81 to 90. I will reply tp you if the modification works.

Here is another question: Do I need to turn on the SST update for this simulation? I'm not sure if this option would benefit the simulation accuracy.
 
Hi,
Apologies for the delay in response. I got bogged down with some other time-sensitive obligations and then was out of the office for a bit. We do recommend turning on sst_update for any simulations longer than about 5 days.
 
Top