Merge pull request #173 from wenkaidu/cr8

Fix incorrect CR8 detection

[ROCm/rccl commit: 8fb18e0ae7]

projects/rccl/src/graph/connect.cc

@@ -95,8 +95,8 @@ static ncclResult_t connectRings(struct ncclComm* comm, int* ringRecv, int* ring
         channel1->ring.next = nextRecvRank;
       }
     }
-    TRACE(NCCL_GRAPH, "Ring %d : %d -> %d -> %d", c, channel0->ring.prev, comm->rank, channel0->ring.next);
-    TRACE(NCCL_GRAPH, "Ring %d : %d -> %d -> %d", c+nChannels, channel1->ring.prev, comm->rank, channel1->ring.next);
+    INFO(NCCL_GRAPH, "Ring %d : %d -> %d -> %d", c, channel0->ring.prev, comm->rank, channel0->ring.next);
+    INFO(NCCL_GRAPH, "Ring %d : %d -> %d -> %d", c+nChannels, channel1->ring.prev, comm->rank, channel1->ring.next);
   }
   return ncclSuccess;
 }

projects/rccl/src/graph/search.cc

@@ -451,7 +451,7 @@ static void parseChordalRing(struct ncclTopoSystem* system, char **str) {
 
   int ngpus = system->nodes[GPU].count;
   // single node CR8G only
-  if (ngpus != 8 && system->nodes[NET].count != 0)
+  if (ngpus != 8 || system->nodes[NET].count != 0)
     return;
   // validate chordal ring and calculate distance
   for (i=0; i<ngpus; i++) {