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wrf.exe

  1. Y

    Segmentation fault - invalid memory reference

    I am currently using WRF 4.5 to perform regional climate simulations over the Tibetan Plateau. However, I consistently encounter an error when running wrf.exe: Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: #0 0x151d5f527ad0 in ??? #1...
  2. M

    URBPARM_LCZ error when runing wrf.exe with bep + bem options

    Hi everybody, I appreciate all the answers provided by this forum, it helps with the model. I am pretty novice on WRF and MLUCM simulation. However, it seems that i have a problem running WRF with sf_urban_physics = 3 and use_wudapt_lcz= 1 I used w2w tool to generate geogrid file with lcz map...
  3. S

    Terminated when running WRF.exe with BEP/BEM, EXIT CODE: 134

    Hello, WRF Team Thank you for your contribution! I am running WRF-Urban with BEP/BEM. However, when running wrf.exe it quits after a few minutes. When I change sf_urban_physics to 2, the model runs fine, but I want to check the energy consumption values, so I have to set sf_urban_physics to 3...
  4. H

    Error: normalize_basetime - Denominator of seconds cannot be negative

    Dear Forum Members, I'm experiencing difficulties running wrf.exe after successfully running ungrib, geogrid, metgrid, and real.exe programs. My setup involves utilizing ERA5 as input data and versions 3.7.1 and 4.0.3 for running WPS and WRF respectively on a HPC cluster. I have attached the...
  5. Y

    forrtl: severe (174): SIGSEGV, segmentation fault occurred

    Hi, I am using WRF-chem 4.4.1, but while running the wrf.exe, I am getting the following error. WRF NUMBER OF TILES = 1 d01 2017-11-01_00:00:00 ---------------------------------------- d01 2017-11-01_00:00:00 W-DAMPING BEGINS AT W-COURANT NUMBER = 1.000000 d01 2017-11-01_00:00:00...
  6. S

    Questions about "nens" in stochastic parameterizaion schemes

    Hi, I'm WRF model newbie. I'm running WRF model with 3 domains and I chose the physics suites named NCAR Convection-Permitting Suite. And I added the option Stochastic parameterization schemes. This is part of my namelist.input &stoch rand_perturb = 1, 1, 1, nens...
  7. D

    Not really sure how to use e_vert and stretching

    Good morning, Could someone please explain how to use e_Vert and the stretching variables? Like I have read the tutorials and I am still not sure how to use it properly. I have attached my namelist.input for someone to help me.
  8. D

    e_vert & num_metgrid_levels

    In practice does e_vert need to be larger than num_metgrid_levels or can they be the same?
  9. A

    ERROR reading namelist namelist_quilt when running wrf.exe

    I'm trying to run wrf.exe using WRF-4.3.1. All WPS and real.exe were completed successfully. When I try running wrf.exe. I end up with the error below in rsl.out.0000. Attached the namelist file I'm trying to use. Many thanks in advance. Edit: I have also tried with sime_step = 162 seconds...
  10. V

    wrf.exe not scaling after 8 mpi process

    Hello everyone, I am running a wrf model with this publicly available data from https://nomads.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.20230313/00/atmos/. wrf.exe completed successfully in 34 hrs using 20 mpi processes. I was trying to reduce the runtime by increasing the number of mpi...
  11. P

    wrf.exe ERROR reading namelist namelist_quilt

    Would someone do me a favor? When I run wrf.exe ,"ERROR reading namelist namelist_quilt" is displayed. I have attached my namelist.input and rsl.error.0000. Thank you very much!
  12. F

    rsl_malloc failed allocating -2076874848 bytes, called rsl_bcast.c, line 290, try 3

    Hello everyone, As shown in the title, I am faced with a perplexing problem using wrf.exe. This problem does not usually occur, but it does occur in certain area settings and with a limited number of parallels. I'm using dm+sm mode. 16 MPI and 9 OMP threads/process -> NG 16 MPI and 18OMP...
  13. A

    Which way is the more computationally efficient for running wf.exe with one way nesting: (a) by setting feedback to '0' or (b) using ndown.exe?

    Hello everyone, I want to run wrf.exe (WRF-Chem) with one-way nesting because of the limitations of my system (a linux server with 378 GB of RAM and 32 processors). I have gone through the WRF user guide, which explained how to do one-way nesting using 'ndown.exe'. Also, I found the following...
  14. J

    Use of Environment Variables to Direct History Output Files

    Hello, I'd like to know if it is possible to use an environment variable to direct the output files from wrf.exe and if so, what the syntax would be in the namelist file. I'm thinking of something like the following: &time_control ... history_outname =...
  15. E

    Error running WRF-Chem

    Hello Been trying to resolve this error issue by looking for answers somewhere else in the internet, but to no avail. I am running WRF-Chem with anthropogenic emissions from EDGAR-HTAP and bio emissions from MEGAN, all the tools necessary before running WRF-CHEM, such as anthro_emis...
  16. A

    (RESOLVED) forrtl: severe (174): SIGSEGV, segmentation fault occurred --> namelist typo

    Hello, I already read multiple posts on this forum quoting this error but none of the provided issues to check or solution to try seemed to work (e.g. : no CFL error). I'm using inputs from ndown.exe (originating from wrfout* by WRF 3.6.1) into a 2-domains (121x121) nested run by WRF 4.2.1...
  17. B

    gwd_opt not working in WRFV4.3.2

    Hello everyone! When I run wrf.exe (Version 4.3.2) with gwd_opt equals to 3 in namelist.input, all the relevant diagnostic variables are zero, and the wind fields of all three domains (25km, 5km, and 1km)are exactly the same with gwd_opt equals to 0. According to the users' guide, gwd_opt...
  18. S

    3-day ahead weather forecast using WRF-ARW based on historical data.

    Can WRF-ARW perform a 3 day forecast based on historical data? I am trying to run wrf model beyond the given input days but it is getting stopped.
  19. Z

    p_top issuses for the wrf.exe

    Hello, I have run the real.exe successfully and get the wrfinputd01 and wrfbdyd01.However when I tried run the wrf.exe,the program fails immediately.and I got the error message like: Max map factor in domain 1 = 0.00. Scale the dt in the model accordingly. D01: Time step...
  20. E

    error on executing wrf.exe

    Good evening, I am new to WRF and I have two concern to ask for clarification. 1. Regarding the 4 nested domain, when I execute the wrf.exe with slurm batch file, I have faced this error longjmp causes uninitialized stack frame ***...
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