\li <b>loopback_bw </b>: bandwidth for loopback (if any). See <b>link</b>
section for syntax/details. If both loopback_* attributes are omitted,
no loopback link is created and all intra-node communication will
- use the main network link of the node.
+ use the main network link of the node. Loopback link is a <b>FATPIPE</b>.
\li <b>loopback_lat </b>: latency for loopback (if any). See <b>link</b>
section for syntax/details. See bb_bw for more info.
+\li <b>topology </b>: network topology to use. For now SimGrid supports FLAT
+ (default, with or without backbone, as described before) or
+ <a href="http://en.wikipedia.org/wiki/Torus_interconnect">TORUS
+ </a> attributes for this tag.
+\li <b>topo_parameters </b>: specific parameters to pass for the topology
+ defined in the topology tag. For torus networks, comma-separated list of
+ the number of nodes in each dimension of the torus.
the router name is defined as the resulting String in the following
