From bd0092e8f1c17728d6cc25f19e6fd1e02db76bdb Mon Sep 17 00:00:00 2001
From: Wenkai Du <43822138+wenkaidu@users.noreply.github.com>
Date: Tue, 18 Mar 2025 08:17:01 -0700
Subject: [PATCH] GDRCOPY support: Off by default (#1605)

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

diff --git a/src/init.cc b/src/init.cc
index 9e4ff00688..3db87c9296 100644
--- a/src/init.cc
+++ b/src/init.cc
@@ -124,7 +124,7 @@ RCCL_PARAM(MscclppEnabled, "MSCCLPP_ENABLE", defaultEnableMscclpp);
 RCCL_PARAM(MscclppForceEnabled, "MSCCLPP_FORCE_ENABLE", 0);
 
 // GDRCOPY support: Off by default
-NCCL_PARAM(GdrCopyEnable, "GDRCOPY_ENABLE", 1);
+NCCL_PARAM(GdrCopyEnable, "GDRCOPY_ENABLE", 0);
 
 // GDRCOPY support
 gdr_t ncclGdrCopy = NULL;