Warning: Using parfor without matlabpool in kmeans matlab

Question

I would like to run the matlab kmeans using 4 lab

I open matlabpool

if ~matlabpool('size')
    matlabpool open 4; % Invokes workers
end

I set the option for the kmeans

stream = RandStream('mlfg6331_64');  % Random number stream
options = statset('UseParallel','always','UseSubstreams','always',...
    'Streams',stream);

Then I run the kmeans

            [clustersFirstHalf,fCentr] = kmeans(first_partition,cIdx,'Options',options,...
                'distance','sqEuclidean',...
                'emptyaction','singleton',...
                'replicates',37,...
                'start','cluster');

I get this warning message...

Warning: Using parfor without matlabpool. 
> In processParallelAndStreamOptions>parforValidateStreamOptions at 173
  In processParallelAndStreamOptions at 78
  In kmeans at 254
  In kmeans>loopBody at 360
  In smartForReduce>(parfor body) at 111
  In parallel_function>make_general_channel/channel_general at 879
  In remoteParallelFunction at 30

matlabpool is open...so it is very weird...

I'm using MATLAB R2012b on linux.... Can any of you help me?

Is this different from your [previous question](http://stackoverflow.com/questions/26474841/warning-using-parfor-without-matlabpool)? You are supposed to edit the original, not post a new one. I'm going to flag as dup unless there is a substantive difference I'm not seeing. — chappjc, Oct 21 '14 at 15:50
@chappjc I think this is more clear...I've deleted the previous one...it was not answered yet — gabboshow, Oct 21 '14 at 15:54
OK, but you should not do it that way. Remember that when you edit your post it goes to the top of the list in the "Active" tab. — chappjc, Oct 21 '14 at 15:57

Warning: Using parfor without matlabpool in kmeans matlab

0 Answers0