diff --git a/run_llama_train.sh b/run_llama_train.sh
index 2d154964..13b66aea 100755
--- a/run_llama_train.sh
+++ b/run_llama_train.sh
@@ -2,6 +2,9 @@
 
 set -ex
 
+# libUV is a scalable backend for TCPStore which is used in processGroup
+# rendezvous. This is the recommended backend for distributed training.
+export USE_LIBUV=1
 TRAINER_DIR=${1:-/home/$USER/local/torchtrain}
 
 # use envs as local overrides for convenience