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libtorch1.5加载lstmFC.pt模型到cuda:1,报错

2022-06-15 20:31:52  阅读:167  来源: 互联网

标签:__ pt self torch lstmFC 报错 zeros lstm size


1、情景

  pytorch的模型,torch.jit.trace转换成pt文件

  然后通过C++加载调用模型;

2、报错内容:

terminate called after throwing an instance of 'std::runtime_error'
  what():  Input and hidden tensors are not at the same device, found input tensor at cuda:1 and hidden tensor at cuda:0
The above operation failed in interpreter.
Traceback (most recent call last):
Serialized   File "code/__torch__/models.py", line 20
    _4 = self.dense2
    _5 = self.dense1
    _6 = torch.slice((self.lstm).forward(input, ), 0, 0, 9223372036854775807, 1)
                      ~~~~~~~~~~~~~~~~~~ <--- HERE
    lstm_out = torch.slice(torch.select(_6, 1, -1), 1, 0, 9223372036854775807, 1)
    input0 = torch.cat([lstm_out, x], -1)
/root/anaconda3/envs/pytorch_1.5.1_cu92/lib/python3.8/site-packages/torch/nn/modules/rnn.py(569): forward
/root/anaconda3/envs/pytorch_1.5.1_cu92/lib/python3.8/site-packages/torch/nn/modules/module.py(534): _slow_forward
/root/anaconda3/envs/pytorch_1.5.1_cu92/lib/python3.8/site-packages/torch/nn/modules/module.py(548): __call__
/data/models.py(24): forward
/root/anaconda3/envs/pytorch_1.5.1_cu92/lib/python3.8/site-packages/torch/nn/modules/module.py(534): _slow_forward
/root/anaconda3/envs/pytorch_1.5.1_cu92/lib/python3.8/site-packages/torch/nn/modules/module.py(548): __call__
/root/anaconda3/envs/pytorch_1.5.1_cu92/lib/python3.8/site-packages/torch/jit/__init__.py(1027): trace_module
/root/anaconda3/envs/pytorch_1.5.1_cu92/lib/python3.8/site-packages/torch/jit/__init__.py(873): trace
pth_to_pt.py(48): pth_topt
pth_to_pt.py(68): <module>
Serialized   File "code/__torch__/torch/nn/modules/rnn.py", line 16, in forward
    max_batch_size = ops.prim.NumToTensor(torch.size(input, 0))
    hx = torch.zeros([1, int(max_batch_size), 128], dtype=6, layout=0, device=torch.device("cuda:0"), pin_memory=False)
    lstm_out, _4, _5 = torch.lstm(input, [hx, hx], [_3, _2, _1, _0], True, 1, 0., False, False, True)
                       ~~~~~~~~~~ <--- HERE
    return lstm_out

Aborted (core dumped)

 

3、原因&解决方式

  lstm的隐藏全零输入hx,在初始化的时候,没有导入到cuda1(该版本不支持);

  

class XXModule(nn.Module):
  def __init__(self):
    ...
    self.lstm = nn.LSTM()
    # layers * num_directions, max_batch_size, hidden_size
    self.zeros = Parameter(torch.zeros(1 * 1, max_batch_size, hidden_size, dtype=torch.float))
  def forward(z):
    lstm_out, (h_n, _) = self.lstm(z, hx=(self.zeros[:, :z.shape[0], :], self.zeros[:, :z.shape[0], :]))
    ....
    out = ...
    return argmax(out)

 

  

 

 

 

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标签:__,pt,self,torch,lstmFC,报错,zeros,lstm,size
来源: https://www.cnblogs.com/xiaoniu-666/p/16379713.html

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