title: How to execute tests in parallel using runsettings file on VS2013
body: <p>we have moved from VS2010 to VS2013 environment. Our solution has over 5K unit tests and on VS2010 they took about 5 minutes while on VS2013 they are taking about 20 minutes.</p>
  
  <p>We saw that there is an issue using the <code>testsettings</code> file as it configures VS2013 to use the former test framework so we moved it to a <code>runsettings</code> file which in facts solves some problems we had on the transition.</p>
  
  <p>The main think right now is that we cannot find how to configure VS2013 to execute the tests in parallel. On the former VS we had the   <code>&lt;Execution parallelTestCount="0"&gt;</code> setting which seems to be non available on the <code>runsettings</code> file.</p>
  
  <p>Summarizing, how can we run tests in parallel using a <code>runsettings</code> file so we use the newer framework?</p>
  
  <p>Thanks.</p>