From 4598de383fa46a5e240e584f65e882aacf1a1907 Mon Sep 17 00:00:00 2001
From: liuwei1031 <46661762+liuwei1031@users.noreply.github.com>
Date: Mon, 20 Apr 2020 14:06:43 +0800
Subject: [PATCH] add comments for dygraph behavior of dot op (#23874)

---
 python/paddle/tensor/linalg.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/python/paddle/tensor/linalg.py b/python/paddle/tensor/linalg.py
index 2a6ffc0ab66..66d8c1fd3ec 100644
--- a/python/paddle/tensor/linalg.py
+++ b/python/paddle/tensor/linalg.py
@@ -440,6 +440,7 @@ def dot(x, y, name=None):
 
     """
     op_type = 'dot'
+    # skip var type check in dygraph mode to improve efficiency
     if in_dygraph_mode():
         op = getattr(core.ops, op_type)
         return op(x, y)
-- 
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