diff --git a/third_party/incubator-tvm/topi/python/topi/nn/winograd_util.py b/third_party/incubator-tvm/topi/python/topi/nn/winograd_util.py
index 464b63301b409c1e92b2e7de721475768306b06b..9bf6c3714969a4aa6173600e69ddd542b52ad850 100644
--- a/third_party/incubator-tvm/topi/python/topi/nn/winograd_util.py
+++ b/third_party/incubator-tvm/topi/python/topi/nn/winograd_util.py
@@ -21,6 +21,9 @@
         https://arxiv.org/abs/1509.09308
         https://github.com/andravin/wincnn
 """
+"""
+2020.08.10 - Remove memoize decorator of function winograd_transform_matrices.
+"""
 
 from operator import mul
 from functools import reduce
@@ -133,7 +136,6 @@ def _interpolation_points(degree):
     return np.array(in_pts[degree-1], dtype=np.float64)
 
 
-@memoize("topi.nn.winograd_matrices", save_at_exit=False)
 def winograd_transform_matrices(tile_size, kernel_size, out_dtype):
     """Compute the A, B, and G transform matrices for `tile_size` as a `tvm.Expr`.
     """