title: CUDA and if and else if
body: <p>When a CUDA kernel contains conditional code like this:</p>
  
  <pre><code>if (statement1)
    calculation1;
  
  else if (statement2)
    calculation2;
  
  else if (statement3)
    calculation3;
  </code></pre>
  
  <p>does it means that calculations will be serialized?</p>