hi,

i have a cnn model,

the first convolutional layer returns nan values:

```
x tensor([[nan, nan, nan, ..., nan, nan, nan],
[nan, nan, nan, ..., nan, nan, nan],
[nan, nan, nan, ..., nan, nan, nan],
...,
[nan, nan, nan, ..., nan, nan, nan],
[nan, nan, nan, ..., nan, nan, nan],
[nan, nan, nan, ..., nan, nan, nan]], device='cuda:0',
grad_fn=<SoftmaxBackward>)
```

it is not happening immidiatly, only after some batches

i have bo idea why