ode>sample.cluster.factorial.FactorialApp</code></b>
if it is not already started.
</p>

<p>
<a href="#code/src/main/java/sample/cluster/factorial/FactorialApp.java" class="shortcut">FactorialApp</a> starts
4 actor systems (cluster members) in the same JVM process. It can be more
interesting to run them in separate processes. Stop the application in the
<a href="#run" class="shortcut">Run</a> tab and run the following commands in separate terminal windows.
</p>

<pre><code>
&lt;path to activator dir&gt;/act