Search found 13 matches

by Zhi Mao
Fri Aug 14, 2020 3:41 am
Forum: NCL
Topic: wrf_user_vert_interp,and fatal:wrf_vintrp
Replies: 2
Views: 97

Re: wrf_user_vert_interp,and fatal:wrf_vintrp

Thank you for your help! I have solve the problem follow you advice.
by Zhi Mao
Thu Aug 13, 2020 12:49 pm
Forum: NCL
Topic: wrf_user_vert_interp,and fatal:wrf_vintrp
Replies: 2
Views: 97

wrf_user_vert_interp,and fatal:wrf_vintrp

Hello, I want to use the function "wrf_user_vert_interp" to interpolate variables(default eta coordinate) to pressure vertical coordinate. I changed my NCL code many times,but the screen always show "fatal:wrf_vintrp: The pres and field arrays must have the same dimensionality",I don't know why! Is ...
by Zhi Mao
Sat Aug 08, 2020 1:08 am
Forum: wrf.exe
Topic: Segmentation fault
Replies: 6
Views: 284

Re: Segmentation fault

I've solved the problem.Because of large topography gradient over the South Tibetan Plateau,the resolution less than 6km is not OK.Thanks!
by Zhi Mao
Tue Aug 04, 2020 2:39 pm
Forum: wrf.exe
Topic: Segmentation fault
Replies: 6
Views: 284

Re: Segmentation fault

Hi Ming, Thanks for your valuable suggestions! Because the area of d01 is so big, I changed the resolution dx=20000 for d01,but didn't change dx=4000 for d02. This time I set epssm=0.9,0.9,w_damping=1 and diff_opt =2, 2.The time_step=3dx is fine for d01 and d02. Now do I just need to wait for the mo...
by Zhi Mao
Fri Jul 31, 2020 11:10 am
Forum: wrf.exe
Topic: Segmentation fault
Replies: 6
Views: 284

Re: Segmentation fault

Dear Ming, I have done as you said,set epssm = 0.9, 0.9 and increase time step in namelist.input,but the seg-fault still occur.After that,I changed namelist.input many times until the model worked.Here are my final namelist.wps, namelist.input,and domain preview(the two black frames are d01 and d02)...
by Zhi Mao
Thu Jul 30, 2020 12:38 pm
Forum: wrf.exe
Topic: Segmentation fault
Replies: 6
Views: 284

Re: Segmentation fault

I've solved the problems I've had,the seg-fault(or CFL errors) do not occur.BUT for the stability of the model,I set time_step=36 for d01(dx=12000,293x193 grids) and time_step=4 for d02(dx=4000,331x304 grids),it takes too much time.Although I typed "mpirun -np 64 ./wrf.exe",it could take more than t...
by Zhi Mao
Tue Jul 28, 2020 9:21 am
Forum: wrf.exe
Topic: Segmentation fault
Replies: 6
Views: 284

Segmentation fault

Hello, I am simulating a convective precipitation process over the Tibetan Plateau.I know steep terrain will cuase seg-fault(my rsl.error file show that),so I typed "ulimit -s unlimited",set time_step=4*DX,add smooth_cg_topo = .true. in the &domains section and set epssm = 0.2.But after I did that,t...
by Zhi Mao
Wed Jun 24, 2020 12:32 pm
Forum: real.exe
Topic: mpirun has exited
Replies: 10
Views: 419

Re: mpirun has exited

Dear Ming,
I am doing my homework about urban canopy layer(UCL).I want to select a typical urban area,and estimate the UCL height based on available data(actually I have no any data),but the content about urban canopy model(UCM) is very limit in the WRFUsersGuide.Do you know how to do that?
by Zhi Mao
Wed Jun 24, 2020 11:39 am
Forum: real.exe
Topic: mpirun has exited
Replies: 10
Views: 419

Re: mpirun has exited

Thank you for your help!I found the problem from FAQ,it was a segmentation fault!I typed "ulimit -s unlimited",changed time_step=3*dx,and added smooth_cg_topo = .true. in the &domains section.The wrfout file is OK.
by Zhi Mao
Fri Jun 19, 2020 6:29 am
Forum: real.exe
Topic: mpirun has exited
Replies: 10
Views: 419

Re: mpirun has exited

Dear Ming, I uninstall openmpi-1.6.5,install mpich-3.0.4,and re-compile WRF & WPS.I don't change my namelist.wps and namelist.input.As you have said,mpirun -np 8 ./real.exe is OK,and all rsl.error files show "SUCCESS".Then I run "mpirun -np 8 ./wrf.exe",I got wrfout file,but my screen show: = BAD TE...
by Zhi Mao
Fri Jun 19, 2020 12:57 am
Forum: real.exe
Topic: mpirun has exited
Replies: 10
Views: 419

Re: mpirun has exited

Adil,thank you for your help! Dear Ming,my version of WRF is WRF Version 4.0(released this on 9 Jun 2018).When I was building WRF,I chose option 15(damper) after executed "./configure".When I was building WPS,I chose option 19(Linux x86_64,Inter compiler,damper) after executed "./configure".I just b...
by Zhi Mao
Thu Jun 18, 2020 12:50 am
Forum: real.exe
Topic: mpirun has exited
Replies: 10
Views: 419

Re: mpirun has exited

Because the format of "rsl.error.0000" and "rsl.out.0000" is not supported, I convert them to pdf.The namelist.iuput keep the original format.Thank you!
by Zhi Mao
Wed Jun 17, 2020 12:13 pm
Forum: real.exe
Topic: mpirun has exited
Replies: 10
Views: 419

mpirun has exited

Hello,I want to run WRFV4,but there are errors after I run the "real" program.I am sure I follow the step:Build WRF—Build WPS—Run WPS—Run WRF,all the steps are ok until I execute "real.exe".I use Ubuntu 18.04,intel2019 compiler,openmpi—1.6.5(maybe it is the problem).The following is the screenshot o...

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