Created by: fengchun1213

paddle版本1.5.1，使用lstm_unit报错，代码如下： import paddle.fluid as fluid

input = fluid.layers.ones(shape=[1, 256], dtype='float32') output = fluid.layers.ones(shape=[1, 256], dtype='float32')

prev_hidden = fluid.layers.ones(shape=[1, 256], dtype='float32') prev_cell = fluid.layers.ones(shape=[1, 256], dtype='float32')

hidden = fluid.layers.lstm_unit(x_t=input, hidden_t_prev=prev_hidden, cell_t_prev=prev_cell)

result = fluid.layers.fc(hidden[0], 256)

cost = fluid.layers.square_error_cost(input=result, label=output) avg_cost = fluid.layers.reduce_mean(cost)

optimizer = fluid.optimizer.Adadelta( learning_rate=1.0, epsilon=1.0e-8, rho=0.95) optimizer.minimize(avg_cost)

cpu = fluid.core.CPUPlace() exe = fluid.Executor(cpu) exe.run(fluid.default_startup_program()) for i in range(100): outs = exe.run( fetch_list=[avg_cost.name]) print(outs[0]) 报错信息：

Traceback (most recent call last): File "/Users/fengchun/Documents/PycharmProjects/crnn_paddle/aaa.py", line 22, in optimizer.minimize(avg_cost) File "</Users/fengchun/anaconda3/envs/paddlepaddle/lib/python3.7/site-packages/decorator.py:decorator-gen-20>", line 2, in minimize File "/Users/fengchun/anaconda3/envs/paddlepaddle/lib/python3.7/site-packages/paddle/fluid/wrapped_decorator.py", line 25, in impl return wrapped_func(args, kwargs) File "/Users/fengchun/anaconda3/envs/paddlepaddle/lib/python3.7/site-packages/paddle/fluid/dygraph/base.py", line 87, in impl return func(args, kwargs) File "/Users/fengchun/anaconda3/envs/paddlepaddle/lib/python3.7/site-packages/paddle/fluid/optimizer.py", line 594, in minimize no_grad_set=no_grad_set) File "/Users/fengchun/anaconda3/envs/paddlepaddle/lib/python3.7/site-packages/paddle/fluid/optimizer.py", line 493, in backward no_grad_set, callbacks) File "/Users/fengchun/anaconda3/envs/paddlepaddle/lib/python3.7/site-packages/paddle/fluid/backward.py", line 578, in append_backward append_backward_vars(root_block, fwd_op_num, grad_to_var, grad_info_map) File "/Users/fengchun/anaconda3/envs/paddlepaddle/lib/python3.7/site-packages/paddle/fluid/backward.py", line 392, in append_backward_vars op_desc.infer_shape(block.desc) paddle.fluid.core_avx.EnforceNotMet: Input(C@GRAD) should not be null at [/home/teamcity/work/ef54dc8a5b211854/paddle/fluid/operators/lstm_unit_op.cc:88] PaddlePaddle Call Stacks: 0 0x122fd7aacp void paddle::platform::EnforceNotMet::Init<char const>(char const, char const, int) + 636 1 0x122fd77dbp paddle::platform::EnforceNotMet::EnforceNotMet(std::exception_ptr, char const, int) + 139 2 0x123549e16p paddle::operators::LstmUnitGradOp::InferShape(paddle::framework::InferShapeContext) const + 1382 3 0x12313ac08p paddle::framework::OpDesc::InferShape(paddle::framework::BlockDesc const&) const + 1464 4 0x1230945b6p void pybind11::cpp_function::initialize<pybind11::cpp_function::cpp_function<void, paddle::framework::OpDesc, paddle::framework::BlockDesc const&, pybind11::name, pybind11::is_method, pybind11::sibling>(void (paddle::framework::OpDesc::)(paddle::framework::BlockDesc const&) const, pybind11::name const&, pybind11::is_method const&, pybind11::sibling const&)::'lambda'(paddle::framework::OpDesc const*, paddle::framework::BlockDesc const&), void, paddle::framework::OpDesc const*, paddle::framework::BlockDesc const&, pybind11::name, pybind11::is_method, pybind11::sibling>(void&&, paddle::framework::OpDesc ()(paddle::framework::BlockDesc const&), pybind11::name const&, pybind11::is_method const&, pybind11::sibling const&)::'lambda'(pybind11::detail::function_call&)::operator()(pybind11::detail::function_call&) const + 198 5 0x122fbca38p pybind11::cpp_function::dispatcher(_object, _object*, _object*) + 3400 6 0x1092b9c48p _PyMethodDef_RawFastCallKeywords + 392 7 0x1092b9710p _PyObject_FastCallKeywords + 592 8 0x1093fa33fp call_function + 399 9 0x1093f7dafp _PyEval_EvalFrameDefault + 45215 10 0x1092b9368p function_code_fastcall + 120 11 0x1093fa265p call_function + 181 12 0x1093f7f99p _PyEval_EvalFrameDefault + 45705 13 0x1093eba42p _PyEval_EvalCodeWithName + 418 14 0x1092b9a73p _PyFunction_FastCallKeywords + 195 15 0x1093fa265p call_function + 181 16 0x1093f7f99p _PyEval_EvalFrameDefault + 45705 17 0x1093eba42p _PyEval_EvalCodeWithName + 418 18 0x1092b9a73p _PyFunction_FastCallKeywords + 195 19 0x1093fa265p call_function + 181 20 0x1093f8052p _PyEval_EvalFrameDefault + 45890 21 0x1093eba42p _PyEval_EvalCodeWithName + 418 22 0x1092b8867p _PyFunction_FastCallDict + 231 23 0x1093f81c6p _PyEval_EvalFrameDefault + 46262 24 0x1093eba42p _PyEval_EvalCodeWithName + 418 25 0x1092b8867p _PyFunction_FastCallDict + 231 26 0x1093f81c6p _PyEval_EvalFrameDefault + 46262 27 0x1093eba42p _PyEval_EvalCodeWithName + 418 28 0x1092b9a73p _PyFunction_FastCallKeywords + 195 29 0x1093fa265p call_function + 181 30 0x1093f7f99p _PyEval_EvalFrameDefault + 45705 31 0x1093eba42p _PyEval_EvalCodeWithName + 418 32 0x1092b9a73p _PyFunction_FastCallKeywords + 195 33 0x1093fa265p call_function + 181 34 0x1093f7d19p _PyEval_EvalFrameDefault + 45065 35 0x1093eba42p _PyEval_EvalCodeWithName + 418 36 0x10944f9a0p PyRun_FileExFlags + 256 37 0x10944f104p PyRun_SimpleFileExFlags + 388 38 0x10947aedcp pymain_main + 9148 39 0x10928becep main + 142 40 0x7fff5cacf3d5p start + 1 41 0x2p