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Problems running ndown.exe for 1km domain


New member
Hi all,
I am running WRF/Chem with chemical option 133 (a new chemical option designed by me/my colleague) and trying to use WRF v3.9.1 to simulate 36km, 6km, and 1km model results. I had no problems running wrf.exe for 36km, no problems running ndown for 6km, and no problems running wrf for 6km. But when I am trying to run ndown.exe for the 1km initial and boundary condition files, I am only getting wrfinput_d02 with no displayable variables. The job is running for the entire time without updating the wrfinput_d02 anymore and no wrfbdy_d02 file is getting generated. I have no error message even if I update the namelist.input to debug_level = 1000. I have attached the namelist.input, rsl.error.0000, and rsl.output.0000 files to this post.

Just to check that everything is correct, I even tried running real.exe for the child domains and that is also running fine. The problem is ndown.exe. Has anyone faced this error before?

Any sort of help is appreciated.


  • namelist.input
    7.8 KB · Views: 14
  • rsl.error.0000
    3 KB · Views: 8
  • rsl.out.0000
    3.7 KB · Views: 5
Hi, I have not seen this before, but is it possibly a memory issue? Also, just a side note, in general we do not recommend using an even number for the parent-child grid size ratio.

Screen Shot 2022-11-21 at 10.08.21 AM.png
Hi Jordan, thank you for replying. I am using 4 nodes and 192 cores for two hours and not getting wrfbdy_d02 for one day. So, it's highly unlikely that there is a memory issue.
I previously used the same namelist.input but for chem_opt = 17 (for GHGs), everything worked perfectly fine.

Any help is appreciated.