[julia-users] Access to Distributed Arrays

[Sebastian Vollmer]

I am trying to access parts of a distributed array that  belongs to the 
current worker

res=dzeros((1,length(workers())), workers(), [1,length(workers())])

(for some reason res=dzeros((length(workers())), workers(), 
[length(workers())]) throws an error )

@spawnat 2  localpart(res)[1]+=rand() 

works perfectly fine. However, 
@everywhere function dowork()
    localpart(res)[1]+=rand()
end
@spawnat 2 dowork()

produces error exception on 2: ERROR: res not defined

so does 

@async begin
    localpart(res)[1]+=rand() 
end

throws  ERROR: BoundsError().

Why do the two code snipplets produce errors?