Created by: yeyupiaoling

在做线性回归的时候，出现这个错误，应该是输入数据类型的问题吧，但是我数据和定义fluid.layers.data()时和读取数据都做了相同处理，实在不知道哪里出来问题。

    def reader():
        for i in range(len(data_y)):
            yield np.array(data_X[i]).astype('float32'), data_y[i]

 x = fluid.layers.data(name='x', shape=[11], dtype='float32')

错误信息

EnforceNotMet: Tensor holds the wrong type, it holds l at [/paddle/paddle/fluid/framework/tensor_impl.h:29]
PaddlePaddle Call Stacks: 
0       0x7f85511686b6p paddle::platform::EnforceNotMet::EnforceNotMet(std::__exception_ptr::exception_ptr, char const*, int) + 486
1       0x7f85511701c0p float const* paddle::framework::Tensor::data<float>() const + 192
2       0x7f85514af813p void paddle::operators::ElementwiseComputeEx<paddle::operators::SubFunctor<float>, paddle::platform::CPUDeviceContext, float, float>(paddle::framework::ExecutionContext const&, paddle::framework::Tensor const*, paddle::framework::Tensor const*, int, paddle::operators::SubFunctor<float>, paddle::framework::Tensor*) + 67
3       0x7f8551656e53p paddle::operators::ElementwiseSubKernel<paddle::platform::CPUDeviceContext, float>::Compute(paddle::framework::ExecutionContext const&) const + 323
4       0x7f8551656ed3p std::_Function_handler<void (paddle::framework::ExecutionContext const&), paddle::framework::OpKernelRegistrarFunctor<paddle::platform::CPUPlace, false, 0ul, paddle::operators::ElementwiseSubKernel<paddle::platform::CPUDeviceContext, float>, paddle::operators::ElementwiseSubKernel<paddle::platform::CPUDeviceContext, double>, paddle::operators::ElementwiseSubKernel<paddle::platform::CPUDeviceContext, int>, paddle::operators::ElementwiseSubKernel<paddle::platform::CPUDeviceContext, long> >::operator()(char const*, char const*) const::{lambda(paddle::framework::ExecutionContext const&)#1}>::_M_invoke(std::_Any_data const&, paddle::framework::ExecutionContext const&) + 35
5       0x7f8551ce52ecp 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 + 492
6       0x7f8551ce171fp 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&) + 255
7       0x7f85512294eap paddle::framework::Executor::RunPreparedContext(paddle::framework::ExecutorPrepareContext*, paddle::framework::Scope*, bool, bool, bool) + 298
8       0x7f8551229ee0p paddle::framework::Executor::Run(paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool) + 128
9       0x7f855114ff5dp
10      0x7f855119ade4p pybind11::cpp_function::dispatcher(_object*, _object*, _object*) + 2596
11            0x4e9ba7p PyCFunction_Call + 119
12            0x53c6d5p PyEval_EvalFrameEx + 23029
13            0x540199p
14            0x53bd92p PyEval_EvalFrameEx + 20658
15            0x5406dfp
16            0x53c1d0p PyEval_EvalFrameEx + 21744
17            0x53b7e4p PyEval_EvalFrameEx + 19204
18            0x540199p
19            0x53bd92p PyEval_EvalFrameEx + 20658
20            0x540199p
21            0x540e4fp PyEval_EvalCode + 31
22            0x54a7c5p
23            0x4e9b7fp PyCFunction_Call + 79
24            0x5372f4p PyEval_EvalFrameEx + 1556
25            0x4ed7d3p _PyGen_Send + 307
26            0x53c9c5p PyEval_EvalFrameEx + 23781
27            0x4ed7d3p _PyGen_Send + 307
28            0x53c9c5p PyEval_EvalFrameEx + 23781
29            0x4ed7d3p _PyGen_Send + 307
30            0x53b9c6p PyEval_EvalFrameEx + 19686
31            0x53b7e4p PyEval_EvalFrameEx + 19204
32            0x53b7e4p PyEval_EvalFrameEx + 19204
33            0x540f9bp PyEval_EvalCodeEx + 315
34            0x4ebe37p
35            0x5c1797p PyObject_Call + 71
36            0x53920bp PyEval_EvalFrameEx + 9515
37            0x5406dfp
38            0x53c1d0p PyEval_EvalFrameEx + 21744
39            0x5434afp
40            0x4e9b7fp PyCFunction_Call + 79
41            0x5372f4p PyEval_EvalFrameEx + 1556
42            0x5406dfp
43            0x53c1d0p PyEval_EvalFrameEx + 21744
44            0x5434afp
45            0x4e9b7fp PyCFunction_Call + 79
46            0x5372f4p PyEval_EvalFrameEx + 1556
47            0x5406dfp
48            0x53c1d0p PyEval_EvalFrameEx + 21744
49            0x5434afp
50            0x4e9b7fp PyCFunction_Call + 79
51            0x5372f4p PyEval_EvalFrameEx + 1556
52            0x5416eap PyEval_EvalCodeEx + 2186
53            0x4ebd23p
54            0x5c1797p PyObject_Call + 71
55            0x53920bp PyEval_EvalFrameEx + 9515
56            0x4ed739p _PyGen_Send + 153
57            0x53b9c6p PyEval_EvalFrameEx + 19686
58            0x53b7e4p PyEval_EvalFrameEx + 19204
59            0x540f9bp PyEval_EvalCodeEx + 315
60            0x4ebd23p
61            0x5c1797p PyObject_Call + 71
62            0x4fb9cep
63            0x5c1797p PyObject_Call + 71
64            0x574999p
65            0x57f03cp
66            0x5c1797p PyObject_Call + 71
67            0x53bba6p PyEval_EvalFrameEx + 20166
68            0x5406dfp
69            0x53c1d0p PyEval_EvalFrameEx + 21744
70            0x4ed739p _PyGen_Send + 153
71            0x53b9c6p PyEval_EvalFrameEx + 19686
72            0x53b7e4p PyEval_EvalFrameEx + 19204
73            0x5416eap PyEval_EvalCodeEx + 2186
74            0x4ebe37p
75            0x5c1797p PyObject_Call + 71
76            0x53920bp PyEval_EvalFrameEx + 9515
77            0x5416eap PyEval_EvalCodeEx + 2186
78            0x4ebd23p
79            0x5c1797p PyObject_Call + 71
80            0x61ef5fp
81            0x5c1797p PyObject_Call + 71
82            0x53bba6p PyEval_EvalFrameEx + 20166
83            0x540f9bp PyEval_EvalCodeEx + 315
84            0x4ebd23p
85            0x5c1797p PyObject_Call + 71
86            0x53920bp PyEval_EvalFrameEx + 9515
87            0x53b7e4p PyEval_EvalFrameEx + 19204
88            0x53b7e4p PyEval_EvalFrameEx + 19204
89            0x53b7e4p PyEval_EvalFrameEx + 19204
90            0x53b7e4p PyEval_EvalFrameEx + 19204
91            0x53b7e4p PyEval_EvalFrameEx + 19204
92            0x540199p
93            0x53bd92p PyEval_EvalFrameEx + 20658
94            0x540199p
95            0x540e4fp PyEval_EvalCode + 31
96            0x54a7c5p
97            0x4e9b7fp PyCFunction_Call + 79
98            0x5372f4p PyEval_EvalFrameEx + 1556
99            0x540199p