relax atol

Author: zhijxu-MS

tests/backend_test_base.py

@@ -91,7 +91,7 @@ def _run_backend(self, g, outputs, input_dict):
             raise ValueError("unknown backend")
         return y
 
-    def run_test_case(self, feed_dict, input_names_with_port, output_names_with_port, rtol=1e-07, atol=0.,
+    def run_test_case(self, feed_dict, input_names_with_port, output_names_with_port, rtol=1e-07, atol=1e-5,
                       convert_var_to_const=True, constant_fold=True, check_value=True, check_shape=False,
                       check_dtype=True, process_args=None, onnx_feed_dict=None, graph_validator=None):
         # optional - passed to process_tf_graph

tests/test_optimizers.py

@@ -45,7 +45,7 @@ def run_and_compare(self, output_names_with_port, onnx_feed_dict, origin_proto,
             raise ValueError("only onnxruntime is supported to test transpose optimizer")
 
         for expected_val, actual_val in zip(expected, actual):
-            self.assertAllClose(expected_val, actual_val, rtol=rtol, atol=0.)
+            self.assertAllClose(expected_val, actual_val, rtol=rtol, atol=1e-5)
             self.assertEqual(expected_val.dtype, actual_val.dtype)
             self.assertEqual(expected_val.shape, actual_val.shape)