Variable in PARFOR
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Hi
I have a loop in my code for calculating a matrix that index of matrix, determined in loop. for example:
for ii=1:100
pos=find(A==ii);
.
.
.
Z(:,pos)=Z(:,pos)+...
.
.
.
end
which A is another matrix. When I try to use PARFOR, an error occured for variable pos. I read PARFOR help in matlab, but I didn't get any idea how can I correct that. can anyone help me to write correct code for PARFOR?
回答（2 个）
Walter Roberson
2011-7-26
0 个投票
Including the error message would help.
My speculation is that the analyzer is not able to determine that you are "slicing" Z in non-overlapping ways.
If so, then I do not know enough about PARFOR to be able to suggest a work-around.
3 个评论
rahman
2011-7-26
Walter Roberson
2011-7-26
Are you initializing Z outside of the loop? Is the value of Z needed after the loop?
rahman
2011-7-26
Konrad Malkowski
2011-8-3
0 个投票
What are you trying to do with Z variable? Do you use it to accumulate some values (reduction variable) across all iterations? Or, do you update a single column of Z in each iteration? I would need more information on this loop and variable in order to help you.
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