type convert error in batch norm op

[dzhwinter]

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/paddle/Paddle/build/python/build/lib-python/paddle/fluid/average.py:42: Warning: The WeightedAverage is deprecated, please use fluid.metrics.Accuracy instead.
  (self.__class__.__name__), Warning)
Traceback (most recent call last):
  File "resnet50.py", line 304, in <module>
    run_benchmark(model_map[args.model], args)
  File "resnet50.py", line 262, in run_benchmark
    fetch_list=[avg_cost, batch_acc, batch_size_tensor])
  File "/paddle/Paddle/build/python/build/lib-python/paddle/fluid/executor.py", line 336, in run
    self.executor.run(program.desc, scope, 0, True, True)
paddle.fluid.core.EnforceNotMet: enforce bn_param_type == framework::ToDataType(ctx.Input<Tensor>("Scale")->type()) failed, 5 != 6
Scale input should be of float type at [/paddle/Paddle/paddle/fluid/operators/batch_norm_op.cc:95]
PaddlePaddle Call Stacks:
0       0x7fe6b66d32ccp paddle::platform::EnforceNotMet::EnforceNotMet(std::__exception_ptr::exception_ptr, char const*, int) + 572
1       0x7fe6b6905360p paddle::operators::BatchNormOp::GetExpectedKernelType(paddle::framework::ExecutionContext const&) const + 976
2       0x7fe6b73b88c9p 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 + 313
3       0x7fe6b67817cep paddle::framework::Executor::RunPreparedContext(paddle::framework::ExecutorPrepareContext*, paddle::framework::Scope*, bool, bool) + 414
4       0x7fe6b6782b72p paddle::framework::Executor::Run(paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool) + 114
5       0x7fe6b66f0e83p void pybind11::cpp_function::initialize<pybind11::cpp_function::initialize<void, paddle::framework::Executor, paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool, pybind11::name, pybind11::is_method, pybind11::sibling>(void (paddle::framework::Executor::*)(paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool), pybind11::name const&, pybind11::is_method const&, pybind11::sibling const&)::{lambda(paddle::framework::Executor*, paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool)#1}, void, paddle::framework::Executor*, paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool, pybind11::name, pybind11::is_method, pybind11::sibling>(pybind11::cpp_function::initialize<void, paddle::framework::Executor, paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool, pybind11::name, pybind11::is_method, pybind11::sibling>(void (paddle::framework::Executor::*)(paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool), pybind11::name const&, pybind11::is_method const&, pybind11::sibling const&)::{lambda(paddle::framework::Executor*, paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool)#1}&&, void (*)(paddle::framework::Executor*, paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool), pybind11::name const&, pybind11::is_method const&, pybind11::sibling const&)::{lambda(pybind11::detail::function_call&)#3}::_FUN(pybind11::detail::function_call) + 579
6       0x7fe6b66ed6f4p pybind11::cpp_function::dispatcher(_object*, _object*, _object*) + 1236
7             0x4c37edp PyEval_EvalFrameEx + 31165
8             0x4b9ab6p PyEval_EvalCodeEx + 774
9             0x4c16e7p PyEval_EvalFrameEx + 22711
10            0x4b9ab6p PyEval_EvalCodeEx + 774
11            0x4c1e6fp PyEval_EvalFrameEx + 24639
12            0x4b9ab6p PyEval_EvalCodeEx + 774
13            0x4eb30fp
14            0x4e5422p PyRun_FileExFlags + 130
15            0x4e3cd6p PyRun_SimpleFileExFlags + 390
16            0x493ae2p Py_Main + 1554
17      0x7fe6d3c1e830p __libc_start_main + 240
18            0x4933e9p _start + 41