added warnings about change in parfor behaviour with matlab >= 2014a.

kotowicz · Jul 11, 2014 · 8c15151 · 8c15151
1 parent 4fa1b48
commit 8c15151
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diff --git a/ParforProgressStarter2.m b/ParforProgressStarter2.m
@@ -36,6 +36,16 @@
 %       end
 %   end
 %
+%
+%   !! PARFOR behaviour has changed !!
+%
+%   With Matlab >= 2014a, "parfor" will automatically startup the
+%   parallel pool, even if you don't want it:
+%   "Starting parallel pool (parpool) using the 'local' profile"
+%
+%   With Matlab < 2014a, "parfor" will be ignored and would fallback to 
+%   a simple "for", if parallel pool wasn't manually started.
+%
 %   parfor i = 1 : N
 %       your_crazy_function();
 %       ppm.increment(i);

diff --git a/ParforProgressStressTest2.m b/ParforProgressStressTest2.m
@@ -48,6 +48,15 @@ function ParforProgressStressTest2(N, run_javaaddpath, show_execution_time)
 
     t0 = tic();
 
+    % !! PARFOR behaviour has changed !!
+    %
+    % With Matlab >= 2014a, "parfor" will automatically startup the
+    % parallel pool, even if you don't want it:
+    % "Starting parallel pool (parpool) using the 'local' profile"
+    %
+    % With Matlab < 2014a, "parfor" will be ignored and would fallback to 
+    % a simple "for", if parallel pool wasn't manually started.
+    % 
     parfor i = 1 : N
         rand(1, 10000);
         ppm.increment(i); %#ok<PFBNS>