分布式阵列 Julia

Question

I'm trying to run this code in parallel by synchronizing the local Part of the DistributedArrays so that only the first line of the Arrays of the first process is 200 and not the first row of the second Array, can someone help, please?

using Distributed
addprocs(2)
@everywhere using DistributedArrays
@everywhere using LinearAlgebra
n=10
Z=zeros(n,n)
#Z[1,:].=200
#Z[:,end].=200
Z=distribute(Z; dist=(2,1))
K=ones(n,1)
#K[1,:].=200
#K[end,:].=200
K=distribute(K; dist=(2,1))
#(i+1) % 2)+1,j

@sync @distributed for x in 1:nworkers()
localpart(Z)[1,:].=200
    @sync @distributed for i in 2:length(localindices(Z)[1])
        for j in 1:length(localindices(Z)[2])
            localpart(Z)[i,j]=10*log(myid())+localpart(K)[i]
        end
    end
    end
end
Z

Answer 1

Try using

if DistributedArrays.localpartindex(Z) == 1; localpart(Z)[1,:].=200;end

Moreover, you should not nest @distributed loop. Rather make it with one parameter eg. xi in such a way that the values of x and i are calculated on the base of xi