batch_norm 未初始化错误

paddle 1.5.0
cpu版本

def test_std_bn():
    import paddle.fluid as fluid
    import numpy as np
    x = fluid.layers.data(name='x', shape=[-1, 3], dtype='float32')
    y = fluid.layers.data(name='y', shape=[-1, 3], dtype='float32')
    hidden1 = fluid.layers.fc(input=x, size=200) # (-1, 200)
    hidden2 = fluid.layers.batch_norm(input=hidden1) # (-1, 200)

    yhidden1 = fluid.layers.fc(input=y, size=200)
    yhidden2 = fluid.layers.batch_norm(input=yhidden1)

    place = fluid.CPUPlace()
    exe = fluid.Executor(place)

    exe.run(fluid.default_startup_program())
    np_x = np.random.random(size=(7, 3)).astype('float32')
    h1, output = exe.run(feed={"x": np_x}, fetch_list = [hidden1, hidden2])
    yh1, youtput = exe.run(feed={"y": np_x}, fetch_list = [yhidden1, yhidden2])

出现错误

/home/jingchunzhen/paddle_release_home/python/lib/python2.7/site-packages/sklearn/externals/joblib/_multiprocessing_helpers.py:38: UserWarning: [Errno 13] Permission denied.  joblib will operate in serial mode
  warnings.warn('%s.  joblib will operate in serial mode' % (e,))
Traceback (most recent call last):
  File "test_paddle.py", line 370, in <module>
    test_std_bn()
  File "test_paddle.py", line 357, in test_std_bn
    h1, output = exe.run(feed={"x": np_x}, fetch_list = [hidden1, hidden2])
  File "/home/jingchunzhen/paddle_release_home/python/lib/python2.7/site-packages/paddle/fluid/executor.py", line 657, in run
    use_program_cache=use_program_cache)
  File "/home/jingchunzhen/paddle_release_home/python/lib/python2.7/site-packages/paddle/fluid/executor.py", line 755, in _run
    exe.run(program.desc, scope, 0, True, True, fetch_var_name)
paddle.fluid.core_avx.EnforceNotMet: Invoke operator mul error.
Python Call stacks: 
  File "/home/jingchunzhen/paddle_release_home/python/lib/python2.7/site-packages/paddle/fluid/framework.py", line 1774, in append_op
    attrs=kwargs.get("attrs", None))
  File "/home/jingchunzhen/paddle_release_home/python/lib/python2.7/site-packages/paddle/fluid/layer_helper.py", line 43, in append_op
    return self.main_program.current_block().append_op(*args, **kwargs)
  File "/home/jingchunzhen/paddle_release_home/python/lib/python2.7/site-packages/paddle/fluid/layers/nn.py", line 334, in fc
    "y_num_col_dims": 1})
  File "test_paddle.py", line 349, in test_std_bn
    yhidden1 = fluid.layers.fc(input=y, size=200)
  File "test_paddle.py", line 370, in <module>
    test_std_bn()
C++ Call stacks: 
Input X(0) is not initialized at [/paddle/paddle/fluid/framework/operator.cc:1128]
PaddlePaddle Call Stacks: 
0       0x7f8058a6b360p void paddle::platform::EnforceNotMet::Init<char const*>(char const*, char const*, int) + 352
1       0x7f8058a6b6d9p paddle::platform::EnforceNotMet::EnforceNotMet(std::__exception_ptr::exception_ptr, char const*, int) + 137
2       0x7f8059dc892fp paddle::framework::OperatorWithKernel::IndicateDataType(paddle::framework::ExecutionContext const&) const + 1343
3       0x7f8059dc8b1fp paddle::framework::OperatorWithKernel::GetExpectedKernelType(paddle::framework::ExecutionContext const&) const + 47
4       0x7f8059dc9d5bp paddle::framework::OperatorWithKernel::ChooseKernel(paddle::framework::RuntimeContext const&, paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&) const + 235
5       0x7f8059dcb218p paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&, paddle::framework::RuntimeContext*) const + 728
6       0x7f8059dcb821p paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&) const + 529
7       0x7f8059dc67c4p paddle::framework::OperatorBase::Run(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&) + 260
8       0x7f8058bed98ep paddle::framework::Executor::RunPreparedContext(paddle::framework::ExecutorPrepareContext*, paddle::framework::Scope*, bool, bool, bool) + 206
9       0x7f8058bf0a1fp paddle::framework::Executor::Run(paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool, std::vector<std::string, std::allocator<std::string> > const&, bool) + 143
10      0x7f8058a5db2dp
11      0x7f8058a9af9ep
12      0x7f809b7c8bb8p PyEval_EvalFrameEx + 25016
13      0x7f809b7cc0bdp PyEval_EvalCodeEx + 2061
14      0x7f809b7c9345p PyEval_EvalFrameEx + 26949
15      0x7f809b7cc0bdp PyEval_EvalCodeEx + 2061
16      0x7f809b7c9345p PyEval_EvalFrameEx + 26949
17      0x7f809b7c9460p PyEval_EvalFrameEx + 27232
18      0x7f809b7cc0bdp PyEval_EvalCodeEx + 2061
19      0x7f809b7cc1f2p PyEval_EvalCode + 50
20      0x7f809b7f4f42p PyRun_FileExFlags + 146
21      0x7f809b7f62d9p PyRun_SimpleFileExFlags + 217
22      0x7f809b80c00dp Py_Main + 3149
23      0x7f809aa09bd5p __libc_start_main + 245
24            0x4007a1p