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"WARNING: Forcibly interrupting busy workers" when trying parallel computing in script mode on server
2 posts by 2 authors  



Wenjie 	

Feb 3


I am trying a test parallel computation with 

# main.jl 
require("step.jl") 
x=5 
r=@spawn f(x) 

f(x) is a function I define in step.jl, 
when computing locally, it could take one minute or more. 

I run this on a server, in script mode, with 

julia -p 2 main.jl 

However, I always get "WARNING: Forcibly interrupting busy workers" 
I tried with a simpler function, say g(x) which takes less than a second locally, 
then main.jl works easily. 
So I highly suspect the reason is the main process is exiting before the workers 
have finished their tasks, from a reading of related issue. 
I wonder if anyone know how to fix this problem. 

Thanks, 
Ariel
 


Lutfullah Tomak 	

Feb 3


Hi.
I'm not an expert of parallel stuff (Also, I cannot try it by myself) but my guess is you can fetch result so that main process does not close until it has the result.
Namely, add this at the end of main.jl
fetch(r)