WRFDA 4dvar segmentation fault in tutorial

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sdhamilton
Posts: 9
Joined: Sat Sep 01, 2018 12:37 am

WRFDA 4dvar segmentation fault in tutorial

Post by sdhamilton » Tue Sep 01, 2020 6:38 pm

Hello, I have been working through the WRFDA tutorial (https://www2.mmm.ucar.edu/wrf/users/wrf ... 4dvar.html). All the examples I tried went fine until trying to run the 4dvar case, at which point I just get a mysterious segmentation fault:

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

I attached the relevant error and log files.

Thanks!

Sofia
Attachments
namelist.input.txt
(1.87 KiB) Downloaded 38 times
configure.wrf
(20.16 KiB) Downloaded 34 times
compile_4dvar.log
(552.63 KiB) Downloaded 31 times
rsl.out.0000.txt
(10.87 MiB) Downloaded 37 times
rsl.error.0000.txt
(10.87 MiB) Downloaded 40 times
var4d.log
(565 Bytes) Downloaded 39 times

Liliputian_123
Posts: 36
Joined: Sat Jan 18, 2020 4:04 pm

Re: WRFDA 4dvar segmentation fault in tutorial

Post by Liliputian_123 » Thu Apr 15, 2021 1:22 pm

Hello,

Were you able to solve this? I have a similar issue on the example tutorial in the documentation. I encountered CFL errors and tried to:
a) reduce the time step
b) use damping
c) use smooth_cg_topog
d) use epssm

but non of the above solved the issue. Please let me know if you were able to figure this out!

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