updated example to current modelnet interface

doc/example/example.c

@@ -181,6 +181,7 @@ int main(
 {
     int nprocs;
     int rank;
+    int num_nets, *net_ids;
 
     /* TODO: explain why we need this (ROSS has cutoff??) */
     g_tw_ts_end = s_to_ns(60*60*24*365); /* one year, in nsecs */
@@ -210,8 +211,12 @@ int main(
     }
 
     /* Setup the model-net parameters specified in the global config object,
-     * returned is the identifier for the network type */
-    net_id = model_net_set_params();
+     * returned are the identifier(s) for the network type. In this example, we
+     * only expect one*/
+    net_ids = model_net_set_params(&num_nets);
+    assert(num_nets==1);
+    net_id = *net_ids;
+    free(net_ids);
     /* in this example, we are using simplenet, which simulates point to point 
      * communication between any two entities (other networks are trickier to
      * setup). Hence: */

doc/example/example.conf

@@ -30,8 +30,10 @@ PARAMS
    #   (each "packet" is represented by an event)
    # - independent of underlying network being used
    packet_size="512";
-   # - type of model to use (must match with corresponding LPGROUPS entry)
-   modelnet="simplenet";
+   # - order that network types will be presented to the user in
+   #   model_net_set_params. In this example, we're only using a single
+   #   network
+   modelnet_order=("simplenet");
    # - message scheduling algorithm (on a per-packet basis)
    modelnet_scheduler="fcfs"; # first come first serve
    # modelnet_scheduler="round-robin"; # round-robin