Add more Rome models (#292)

[ROCm/rccl commit: dfa3c41ede]

projects/rccl/tools/topo_expl/topo_expl.cpp

@@ -108,6 +108,12 @@ NodeModelDesc model_descs[] = {
   {4, "topo_8p_rome_n2_2.xml",  "4 nodes 8 VEGA20 Rome NPS=2 Alt. Model 2 NET/IF"},
   {4, "topo_8p_ts1_n4_2.xml",   "4 nodes 8 VEGA20 TS1 NPS=4 3 NET/IF"},
   {1, "topo_8p_rome_n4.xml",    "single node 8 VEGA20 Rome NPS=4"},
+  {1, "topo_4p3l_n2.xml",       "single node 8 gfx908 Rome"},
+  {4, "topo_4p3l_n2.xml",       "4 nodes 8 gfx908 Rome"},
+  {1, "topo_4p3l_n4.xml",       "single node 8 gfx908 Rome NPS=4"},
+  {4, "topo_4p3l_n4.xml",       "4 nodes 8 gfx908 Rome NPS=4"},
+  {1, "topo_4p3l_n2_1.xml",     "single node 8 gfx908 Rome"},
+  {4, "topo_4p3l_n2_1.xml",     "4 nodes 8 gfx908 Rome"},
 };
 
 int main(int argc,char* argv[])