How to use parallel processing with varying internal variable

This is a simple code, i am uploading for illustration. Can somebody suggest how to use all the four cores of a system with varying internal variables, as given in the code below:

b = 2; bi = zeros(10,1);
matlabpool open 
parfor i = 1:100 %#ok<PFUNK>
    a(i) = b+ bi(i);
    b(i+1) = a(i);
end
matlabpool close

Regards

Answer 1

[Matt J]

The first thing would be to re-express the body of the loop as something parallelizable, in your case

parfor i = 1:100 
    a(i) = b*i;
end