Add new Rome model (#1304)

* Add another rome model and override

* Fix bug

* Fix typo

* Add ring

* Update ring

* Fix model matching

* Clean up

* Clean up

* Reverse rings for NCCL_RINGS input

* Only reverse NCCL_RINGS for ring graph

* Fix mapping issue when using  NCCL_RINGS

* Add NCCL_RINGS_REMAP to handle inconsistant net names

src/graph/rome_models.h

@@ -24,7 +24,7 @@ THE SOFTWARE.
 
 ncclResult_t parseGraph(const char* str, struct ncclTopoSystem* system, struct ncclTopoGraph* graph, int* gpu_map, int* net_map, int reverse);
 ncclResult_t parseGraphLight(const char* str, struct ncclTopoSystem* system, struct ncclTopoGraph* graph, int* gpu_map);
-ncclResult_t parseRome4P2H(struct ncclTopoSystem* system, struct ncclTopoGraph* graph);
+ncclResult_t parseRome4P2H(struct ncclTopoSystem* system, struct ncclTopoGraph* graph2, const char *ringBase);
 ncclResult_t parseChordalRing(struct ncclTopoSystem* system, struct ncclTopoGraph* graph);
 ncclResult_t parse1H16P(struct ncclTopoSystem* system, struct ncclTopoGraph* graph);
 ncclResult_t parse4H4P(struct ncclTopoSystem* system, struct ncclTopoGraph* graph);