WRF only running with one processor

[ephraims]

Hi,
I compiled WRF successfully on the Derecho HPC using option 34 (dmpar), and have been attempting to run an ideal les case using multiple processors. While I have been able to run a test case (100x100 grid points at 100m res), it takes 12 hrs of wall time to complete 40min of simulation time because only one processor is being used (only one rsl.error and rsl.out file is created).

I suspect that a MPI warning I got when running ideal.exe is related to my problem. Attached is a screenshot of that warning. Despite the warning, the last line of the rsl.error file when running ideal.exe is "wrf: SUCCESS COMPLETE IDEAL INIT"

I have also attached a screenshot of my batch script used to run wrf.exe

Any guidance on how to fix this issue is appreciated!

Thanks,
Sam

 

[Ming Chen]

Sam,

Which ideal case did you run?

 

[ephraims]

I ran ideal_les

 

[William.Hatheway]

Hi,
I compiled WRF successfully on the Derecho HPC using option 34 (dmpar), and have been attempting to run an ideal les case using multiple processors. While I have been able to run a test case (100x100 grid points at 100m res), it takes 12 hrs of wall time to complete 40min of simulation time because only one processor is being used (only one rsl.error and rsl.out file is created).

I suspect that a MPI warning I got when running ideal.exe is related to my problem. Attached is a screenshot of that warning. Despite the warning, the last line of the rsl.error file when running ideal.exe is "wrf: SUCCESS COMPLETE IDEAL INIT"

I have also attached a screenshot of my batch script used to run wrf.exe

Any guidance on how to fix this issue is appreciated!

Thanks,
Sam

try mpirun -np (# of cores)