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New member
When I ran the ./wrf.exe I got the segmentation fault. I would appreciate it very much if you could help me on how to solve the problem.

marjan@Marjan:~/Models/WRF-CMAQ/WRFV4.5/test/em_real$ ./wrf.exe
starting wrf task 0 of 1
Segmentation fault (core dumped)


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Your namelist.input looks fine.
How long did the model run before it crashed? In addition to segmentation fault, did you find other error messages?
The segmentation fault is often caused by two issues especially when the model crashed immediately:

(1) There is not sufficient memory to run the case
(2) The input data is wrong.

The above issues are related to both WPS and WRF, including the model compiling and data processing.

Since you are a beginner, I would suggest that you go through the practice page, which can guide you step by step how to run WRF:

The WRF User's Guide is also helpful.