<?xml version='1.0'?>
-<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid.dtd">
-<platform version="3">
+<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd">
+<platform version="4">
<process host="node-1.acme.org" function="sleeper" kill_time="6"> <argument value="10"/></process>
<process host="node-2.acme.org" function="sleeper" kill_time="6"> <argument value="6"/></process>
<process host="node-3.acme.org" function="sleeper" kill_time="10"> <argument value="6"/></process>