Compute Squared distance b/w two tensors inside a model in PyTorch :

D = | P1− P2 | ^ 2

options:

```
torch.norm(p1 - p2, dim=0)
(p1 - p2).pow(2).sum(1)
torch.dist(p1, p2, 2)
```

which one is correct for just the squared distance between two tensors?