Created by: lalala805

模型采用了DynamicRNN, 训练时一直报warning，希望咨询下，这些warning具体指代什么，一般什么情况下会报这样的warning，谢谢。 （代码太多，不好复制，想先简单问下warning指代。） W0808 19:34:25.880235 41151 while_op.cc:249] dynamic_rnn_input_array_1@GRAD is not found in cur_scope. W0808 19:34:25.880790 41151 while_op.cc:249] dynamic_rnn_input_array_2@GRAD is not found in cur_scope. W0808 19:34:25.880913 41151 while_op.cc:249] dynamic_rnn_input_array_0@GRAD is not found in cur_scope. W0808 19:34:25.913822 41151 while_op.cc:249] dynamic_rnn_input_array_1@GRAD is not found in cur_scope. W0808 19:34:25.914101 41151 while_op.cc:249] dynamic_rnn_input_array_2@GRAD is not found in cur_scope. W0808 19:34:25.914186 41151 while_op.cc:249] dynamic_rnn_input_array_0@GRAD is not found in cur_scope. W0808 19:34:25.949082 41151 while_op.cc:249] dynamic_rnn_input_array_1@GRAD is not found in cur_scope. W0808 19:34:25.949365 41151 while_op.cc:249] dynamic_rnn_input_array_2@GRAD is not found in cur_scope. W0808 19:34:25.949451 41151 while_op.cc:249] dynamic_rnn_input_array_0@GRAD is not found in cur_scope. W0808 19:34:25.984117 41151 while_op.cc:249] dynamic_rnn_input_array_1@GRAD is not found in cur_scope. W0808 19:34:25.984411 41151 while_op.cc:249] dynamic_rnn_input_array_2@GRAD is not found in cur_scope. W0808 19:34:25.984467 41151 while_op.cc:249] dynamic_rnn_input_array_0@GRAD is not found in cur_scope. W0808 19:34:26.161180 41151 while_op.cc:249] dynamic_rnn_input_array_1@GRAD is not found in cur_scope.