Created by: Meiyim

测试paddle版本：1.7.1 gpu 测试代码：

import paddle
from paddle import fluid
from paddle.fluid import layers

print(paddle.__version__)
def gru(input, hidden_size, name, param_initializer):
    encoder_fwd_cell = layers.GRUCell(hidden_size=hidden_size//2, param_attr=fluid.ParamAttr(name=name+'_fwd_gru.w_0', initializer=param_initializer), bias_attr=name+'_fwd_gru.b_0')
    encoder_bwd_cell = layers.GRUCell(hidden_size=hidden_size//2, param_attr=fluid.ParamAttr(name=name+'_bwd_gru.w_0', initializer=param_initializer), bias_attr=name+'_bwd_gru.b_0')
    fwd_output, fwd_state = layers.rnn(
        cell=encoder_fwd_cell,
        inputs=input,
        time_major=False,
        is_reverse=False)

    bwd_output, bwd_state = layers.rnn(
        cell=encoder_bwd_cell,
        inputs=input,
        time_major=False,
        is_reverse=True)

    output = layers.concat([fwd_output, bwd_output], -1)
    return output

emb = fluid.data(name='a', shape=[10,100,768], dtype='float32')

gru(emb, 768, 'test', None)

错误输出：

1.7.1
Traceback (most recent call last):
  File "test.py", line 49, in <module>
    gru(emb, 768, 'test', None)
  File "test.py", line 36, in gru
    is_reverse=False)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/layers/rnn.py", line 486, in rnn
    outputs, new_states = cell.call(inputs, copy_states, **kwargs)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/layers/rnn.py", line 276, in call
    new_hidden = self.gru_unit(inputs, states)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/dygraph/layers.py", line 298, in __call__
    self._build_once(*inputs, **kwargs)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/contrib/layers/rnn_impl.py", line 109, in _build_once
    dtype=self._dtype)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/dygraph/layers.py", line 113, in create_parameter
    default_initializer)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/layer_helper_base.py", line 353, in create_parameter
    **attr._to_kwargs(with_initializer=True))
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/framework.py", line 2448, in create_parameter
    param = Parameter(global_block, *args, **kwargs)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/framework.py", line 4640, in __init__
    **kwargs)
  File "/home/work/chenxuyi/app_paddle_1.7/lib/python3.6/site-packages/paddle/fluid/framework.py", line 895, in __init__
    "matched.".format(self.name, old_shape, shape))
ValueError: Variable test_fwd_gru.w_0 has been created before. the previous shape is (1152, 768); the new shape is (1152, 384). They are not matched.