use all cores of CPU
<p>I want to use parallel computing on matlab, i have i7-960 CPU with 4 cores and 8 threads, when i run feature('numCores') command in matlab, i obtain this </p>

<pre><code>feature('numCores') 
MATLAB detected: 3 physical cores.
MATLAB detected: 6 logical cores.
MATLAB was assigned: 6 logical cores by the OS.
MATLAB is using: 3 logical cores.
MATLAB is not using all logical cores because hyper-threading is enabled.

ans =

     3
</code></pre>

<p>why matlab detect just juste 3 physical cores ! and how can i use all logical and physical cores for parallel computing.
thanks.</p>