From f653e5af01d076a008af7f25e5a85812c697f06e Mon Sep 17 00:00:00 2001
From: ytxiong <45058324+yingtongxiong@users.noreply.github.com>
Date: Thu, 26 Oct 2023 17:38:51 +0800
Subject: [PATCH] add broadcast synchronize (#451)

---
 internlm/solver/optimizer/hybrid_zero_optim.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/internlm/solver/optimizer/hybrid_zero_optim.py b/internlm/solver/optimizer/hybrid_zero_optim.py
index 5031fd3..0ef9909 100644
--- a/internlm/solver/optimizer/hybrid_zero_optim.py
+++ b/internlm/solver/optimizer/hybrid_zero_optim.py
@@ -709,6 +709,8 @@ class HybridZeroOptimizer(BaseOptimizer):
         for handle in handles:
             handle.wait()
 
+        torch.cuda().synchronize()
+
     ##################
     # FP16 Utilities #
     ##################