torch 1.2 error:one of the variables needed for gradient computation has been modified by an inplace operation:

[xr-Yang]

torch1.2 run 'train.sh',when loss.backforward. raise error like this:
one of the variables needed for gradient computation has been modified by an inplace operation: [torch.cuda.FloatTensor [2, 5]], which is output 0 of ClampBackward, is at version 2; expected version 0 instead. Hint: enable anomaly detection to find the operation that failed to compute its gradient, with torch.autograd.set_detect_anomaly(True)

is the torch version problem? Thanks

[ClaireMei]

I met the same problem. Have you solved it?

[ClaireMei]

The problem occurs when running metrics.py "cos_theta = cos_theta.clamp(-1, 1) # for numerical stability"
I solved it by degrading torch as 1.1.0.