parellel computing - training a self organizing map in parallel

Hello,

How can I achive something like this?

 x = [1 2 3 4 5 6 7 8 9 10];
 tot=0;

parfor ii = 1:10
  tot = tot + xx(ii);
end

I ultimatelly want to paralize my self organizing map (SOM) algorithm which I think the task boils down to understand how can I achive the above algorithm.

Thanks for any input!