title: Requesting nodes by numbers and their names in SGE
body: <ol>
  <li><p>How to request the number of nodes (not procs), while job submission in SGE?</p>
  
  <p>for e.g. In TORQUE, we can specify <code>qsub -l nodes=3</code></p></li>
  <li><p>How to request the nodes by their names in SGE?</p>
  
  <p>for e.g. In TORQUE, we can do this by <code>qsub -l nodes=abc+xyz+pqr</code>, where <code>abc</code>, <code>xyz</code> and <code>pqr</code> are hostnames</p>
  
  <p>For single hostname, <code>qsub -l hostname=abc</code> it works. But how do I delimit multiple hostnames in SGE?</p></li>
  </ol>