ValueError: optimizer got an empty parameter list

[kk701710]

...... Initialize the network done!!! .......
Traceback (most recent call last):
File "/home/jiannan/project/pytorch_classification-master/train.py", line 76, in
optimizer = optim.Adam(filter(lambda p: p.requires_grad, model.parameters()), lr=cfg.LR)
File "/home/jiannan/anaconda3/envs/pt-gpu/lib/python3.6/site-packages/torch/optim/adam.py", line 42, in init
super(Adam, self).init(params, defaults)
File "/home/jiannan/anaconda3/envs/pt-gpu/lib/python3.6/site-packages/torch/optim/optimizer.py", line 46, in init
raise ValueError("optimizer got an empty parameter list")
ValueError: optimizer got an empty parameter list
这个问题要怎么解决？？？

[WhyFear]

你好，请问你解决了吗？我是在用densenet的时候出现了和你一样的问题。

---

我弄好了，把优化器改成SGD，然后在loss = criterion(out, labels.long())这一行的下面添加：
loss.requires_grad_(True)
就能正常跑起来了。