-<!DOCTYPE platform_description SYSTEM "surfxml.dtd">
-<!-- For using with ping_pong, platform_sendrecv.xml -->
-<platform_description version="1">
+<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid.dtd">
+<platform version="3"><!-- For using with ping_pong, platform_sendrecv.xml -->
+