Created by: luotao1

test_pad_op fails randomly in Teamcity, can adjust the max_relative_error?

[12:23:03]	149/161 Test #150: test_pad_op .........................***Failed 1.51 sec
[12:23:03]	F.......
[12:23:03]	======================================================================
[12:23:03]	FAIL: test_check_grad_normal (__main__.TestCase1)
[12:23:03]	----------------------------------------------------------------------
[12:23:03]	Traceback (most recent call last):
[12:23:03]	File "test_pad_op.py", line 25, in test_check_grad_normal
[12:23:03]	self.check_grad(['X'], 'Out')
[12:23:03]	File "/paddle/python/paddle/v2/framework/tests/op_test.py", line 268, in check_grad
[12:23:03]	"Gradient Check On %s" % str(cpu_place))
[12:23:03]	File "/paddle/python/paddle/v2/framework/tests/op_test.py", line 227, in __assert_is_close
[12:23:03]	self.assertLessEqual(max_diff, max_relative_error, err_msg())
[12:23:03]	AssertionError: Gradient Check On CPUPlace Variable X@GRAD max gradient diff 0.005153 over limit 0.005000, the first error element is 56