title: Nested Parallel.For() loops speed and performance
body: <p>I have a nested for loop.
  I have replaced the first For with a <code>Parallel.For()</code> and the speed of calculation increased.</p>
  
  <p>My question is about replacing the second for (inside one) with a <code>Parallel.For()</code>. Will it increase the speed? or there is no difference? or it will be slower?</p>
  
  <p><strong>Edit:</strong> </p>
  
  <p>Since the cores are not unlimited (usually there is 2 to 8 cores), the inside loop is running parallel. So, if I change the inside for with a <code>Parallel.For()</code>, again it runs parallel. But i'm not sure how it changes the performance and speed.</p>