diff --git a/mindspore/_extends/graph_kernel/expanders/tile.py b/mindspore/_extends/graph_kernel/expanders/tile.py
index 7f1ae7c6ca8..258f25246d2 100644
--- a/mindspore/_extends/graph_kernel/expanders/tile.py
+++ b/mindspore/_extends/graph_kernel/expanders/tile.py
@@ -16,45 +16,6 @@
 from mindspore._extends.graph_kernel.model import model_builder as builder
 
 
-def _get_tile_output_shape(shape, multiples):
-    """compute output shape of tile"""
-
-    if multiples is None:
-        return shape
-    if not isinstance(shape, (list, tuple)):
-        raise TypeError("Input shape of Tile must be of type list or tuple")
-    if not isinstance(multiples, (list, tuple)):
-        raise TypeError("multiples of Tile must be of type list or tuple")
-
-    shape = list(shape)
-    multiples = list(multiples)
-    diff_len = len(multiples) - len(shape)
-    if diff_len < 0:
-        raise ValueError("Dimensions of multiples{} < dimensions of input{} in Tile".format(multiples, shape))
-    if diff_len > 0:
-        for _ in range(diff_len):
-            shape.insert(0, 1)
-
-    shape_compatible = True
-    output_shape = []
-    input_reshape = []
-    output_reshape = []
-    for sh, mul in list(zip(shape, multiples)):
-        dim = sh * mul
-        output_shape.append(dim)
-        if sh == 1 or mul == 1:
-            input_reshape.append(sh)
-            output_reshape.append(dim)
-        else:
-            shape_compatible = False
-            input_reshape.append(1)
-            input_reshape.append(sh)
-            output_reshape.append(mul)
-            output_reshape.append(sh)
-
-    return output_shape, input_reshape, output_reshape, shape_compatible
-
-
 def expand_tile(expand_info):
     """Tile expander"""
 
@@ -65,7 +26,7 @@ def expand_tile(expand_info):
     for item in attrs:
         if 'multiples' in item:
             multiples = item['multiples']
-    output_shape, _, _, shape_compatible = _get_tile_output_shape(input_desc['shape'], multiples)
+    output_shape, _, _, shape_compatible = builder.get_tile_output_shape(input_desc['shape'], multiples)
     graph_builder = builder.GraphBuilder()
 
     # generate a graph.
diff --git a/mindspore/_extends/graph_kernel/model/model_builder.py b/mindspore/_extends/graph_kernel/model/model_builder.py
index ea6d3564c6c..2dd2a93fe52 100644
--- a/mindspore/_extends/graph_kernel/model/model_builder.py
+++ b/mindspore/_extends/graph_kernel/model/model_builder.py
@@ -18,6 +18,45 @@ import copy
 from .model import PrimLib, Tensor, Value, Operator, Graph, AlignShape, AddControlBuddy
 
 
+def get_tile_output_shape(shape, multiples):
+    """compute output shape of tile"""
+
+    if multiples is None:
+        return shape
+    if not isinstance(shape, (list, tuple)):
+        raise TypeError("Input shape of Tile must be of type list or tuple")
+    if not isinstance(multiples, (list, tuple)):
+        raise TypeError("multiples of Tile must be of type list or tuple")
+
+    shape = list(shape)
+    multiples = list(multiples)
+    diff_len = len(multiples) - len(shape)
+    if diff_len < 0:
+        raise ValueError("Dimensions of multiples{} < dimensions of input{} in Tile".format(multiples, shape))
+    if diff_len > 0:
+        for _ in range(diff_len):
+            shape.insert(0, 1)
+
+    shape_compatible = True
+    output_shape = []
+    input_reshape = []
+    output_reshape = []
+    for sh, mul in list(zip(shape, multiples)):
+        dim = sh * mul
+        output_shape.append(dim)
+        if sh == 1 or mul == 1:
+            input_reshape.append(sh)
+            output_reshape.append(dim)
+        else:
+            shape_compatible = False
+            input_reshape.append(1)
+            input_reshape.append(sh)
+            output_reshape.append(mul)
+            output_reshape.append(sh)
+
+    return output_shape, input_reshape, output_reshape, shape_compatible
+
+
 class OpInfer:
     """Op infer"""
     @staticmethod
@@ -74,6 +113,7 @@ class OpInfer:
         'InplaceAssign': lambda inputs, attrs: inputs[2].shape,
         'Reshape': lambda inputs, attrs: attrs["shape"],
         'BroadcastTo': lambda inputs, attrs: attrs["shape"],
+        'Tile': lambda inputs, attrs: get_tile_output_shape(inputs[0].shape, attrs["multiples"])[0],
     }
     infer_dtype_func = {
         # add special infer func here
diff --git a/tests/st/ops/graph_kernel/test_sqrt_grad.py b/tests/st/ops/graph_kernel/test_sqrt_grad.py
index a200ae7d974..65342920fd3 100644
--- a/tests/st/ops/graph_kernel/test_sqrt_grad.py
+++ b/tests/st/ops/graph_kernel/test_sqrt_grad.py
@@ -47,7 +47,13 @@ def test_sqrt_grad(shape_x, shape_dout, dtype):
     expect_np = expect.asnumpy().copy()
     output_np = output.asnumpy().copy()
 
-    assert np.allclose(expect_np, output_np, 0.0001, 0.0001)
+    rtol = 0.0001
+    atol = 0.0001
+    if dtype == np.float16:
+        rtol = 0.001
+        atol = 0.001
+
+    assert np.allclose(expect_np, output_np, rtol, atol)
 
 
 @pytest.mark.level0