title: doSNOW/foreach Performance Issues
body: <p>I have a loop which is loading decent size files around 5MB each and than running some computations on them.  I need to load 500-1000 of them.  Seems like an easy job for foreach.</p>
  
  <p>I am doing this but the performance of doSNOW seems to be horrendous.</p>
  
  <p>I found this post and this fellow seems to have had the same issues:</p>
  
  <p><a href="http://statsadventure.blogspot.com/2012/06/performance-with-foreach-dosnow-and.html" rel="nofollow">http://statsadventure.blogspot.com/2012/06/performance-with-foreach-dosnow-and.html</a></p>
  
  <p>So a couple of questions.</p>
  
  <ol>
  <li>Is there an alternative to doSnow?  I realize there is doMC but I am running windows.</li>
  <li>Is doMC on linux that much faster than doSNOW?</li>
  <li>Is there anyway to output to screen from a worker so I can at least get some sort of idea how my job is progressing.</li>
  </ol>
  
  <p>Thank you in advance!</p>