Update Rome model matching (#461)

* Update Rome model matching

* Add another Rome model

* Automatically setup NET GDR level from model

tools/topo_expl/utils.cpp

@@ -531,6 +531,8 @@ ncclResult_t initTransportsRank_1(struct ncclComm* comm, struct allGather1Data_t
   //NCCLCHECK(ncclTopoGetSystem(comm, &comm->topo));
   // save nRanks to ncclTopoSystem as indicator of multi-node
   comm->topo->nRanks = comm->nRanks;
+  // init netGdrLevel
+  comm->topo->netGdrLevel = -2;
   // Compute paths between GPUs and NICs
   NCCLCHECK(ncclTopoComputePaths(comm->topo, comm->peerInfo));
   // Remove inaccessible GPUs and unused NICs