Error in wrf.exe IEEE_UNDERFLOW_

C

carinavb

Member
Good morning, I have a problem with wrf.exe, it worked fine until today when it ran for about 19 hours on the first day and then it stopped, I looked at the logs and in rsl.err.0007 the following message appears Note: The following floating -point exceptions are signaling: IEEE_UNDERFLOW_ in the others nothing appears, I run it without mpi and the same thing happens. I don't know if it will be the data I download to make the forecast. What can I review? Can you help me please?
I made several tests and realize that de microphysics is the problem, I change 9 to 8 and now works, but I don't know why.
My forecast is geared towards severe storms, rain and hail.
Thank you
 

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There are a few issues in namelist.input :

(1) dx and dy should be specified for each domain, i.e.,
dx = 12000, 4000,
dy = 12000, 4000

(2) if you run with Thompson scheme , please reduce time step to 4 * DX, i.e.,
time_step = 45

(3) turn on cumulus scheme for 12km domain, i.e.,
cu_physics = 1, 0

(4) please set radt = 12, 12.

Can you change the above options and try again?
 
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