title: Android CTS test can run on multiple devices in parallel
body: <p>Android CTS documents said as below.</p>
  
  <p>"To shard a plan test run on multiple devices:-</p>
  
  <pre><code>run cts -plan CTS --shards &lt;number of shards&gt; 
  </code></pre>
  
  <p>then I do in this way. but I can not do.
  surely PC can recognize the multi devices but cannot run on them.</p>
  
  <p>If you know how, please help me!!!</p>
  
  <hr>
  
  <p>I'm sorry. the above comment was not drawn in details.</p>
  
  <p>I show you what I did.</p>
  
  <p>Firstly I downloaded Android 4.0.3 R3 Compatibility Test Suite (CTS)
  from the following google site.
   <a href="http://source.android.com/compatibility/downloads.html" rel="nofollow">http://source.android.com/compatibility/downloads.html</a></p>
  
  <p>then I constructed CTS and SDK in my PC
  and connected 2 device to my PC.</p>
  
  <p>I executed the commands as below.</p>
  
  <ol>
  <li>./android-cts/tool/cts-tradefed</li>
  <li>run -plan CTS --shards 2</li>
  </ol>
  
  <p>Consequently, the following message was shown.</p>
  
  <p>cts-tf>10-23 18:xx:xx I/unknown_devices:
   Created result dir 2012.10.xx._xx.xx.xx
   Android CTS 4.0.3_r3
   I/Device Manager : Detected new device a61xxxxx
   I/Device Manager : Detected new device de0xxxxx</p>
  
  <p>but after that, no message was shown.</p>