From 90e928bcd5075e47648d913a7888909ba3499732 Mon Sep 17 00:00:00 2001
From: Wenkai Du <wenkai.du@amd.com>
Date: Wed, 4 Dec 2019 21:05:10 +0000
Subject: [PATCH] Change default P2P level

---
 src/transport/p2p.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/transport/p2p.cc b/src/transport/p2p.cc
index 7045ee8abc..7ce944fef4 100644
--- a/src/transport/p2p.cc
+++ b/src/transport/p2p.cc
@@ -78,7 +78,7 @@ static int busIdToCudaDev(const char* busId) {
 /* Determine if we can communicate with the peer through p2p */
 ncclResult_t p2pCanConnect(ncclTvalue_t* ret, struct ncclPeerInfo* myInfo, struct ncclPeerInfo* peerInfo) {
   // Do not use P2P across root complexes by default (provided CUDA permits it)
-  int p2pLevel = PATH_NODE;
+  int p2pLevel = PATH_SYS;
   if (ncclParamP2pDisable() == 1) p2pLevel = 0;
   if (ncclParamP2pLevel() != -2) p2pLevel = ncclParamP2pLevel();