Parfor and cell array

Suppose I have the following code
p = cell(1,3);
w = zeros(5,3);
p{1} = X; 2 by 2 matrix
p{2} = Y; 2 by 2 matrix
p{3} = Z; 2 by 2 matrix
parfor k=1:3
for i=1:5
w(i,k) = somefunction(variable1, variable2,p{k})
end
end
If I remove the parfor, the code runs fine, but if I use the parfor I get the error: Output argument "XXXX" from some other function that is used in "somefunction" was not assigned during call.
Sorry for being very schematic but the actual code is very long has and uses numerous functions.

 采纳的回答

It works for me:
p = cell(1,3);
w = zeros(5,3);
p{1} = rand(2);
p{2} = rand(2);
p{3} = rand(2);
myFun = @(x,y,z) x + y + sum(z(:));
variable1 = 1;
variable2 = 2;
parfor k=1:3
for i=1:5
w(i,k) = myFun(variable1, variable2,p{k})
end
end
I'm afraid you'll have to provide more details about variable1, variable2 and somefunction()

更多回答(1 个)

Michael
Michael 2014-10-21

0 个投票

Figured it out, a portion of the workers were working with variables p{k} that had a defective input. The matrices were not Hermitian and the code only works if they are. Running each iteration separately helped.

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