记录下pytorch代码从0.3版本迁移到0.4版本要做的一些更改。

Posted 2021-01-19 www-caiyin-com

1. 

UserWarning: Implicit dimension choice for log_softmax has been deprecated. Change the call to include dim=X as an argument.
return F.log_softmax(x)

解决方法：把 F.log_softmax(x)改为F.log_softmax(x,dim=0) , 而且我发现改为F.log_softmax(x,dim=1)，这个到底哪个更合理需要进一步确认。

 

2. 

UserWarning: invalid index of a 0-dim tensor. This will be an error in PyTorch 0.5. Use tensor.item() to convert a 0-dim tensor to a Python number  

train_loss += loss.data[0]  

解决方法：把 train_loss+=loss.data[0]  修改为 train_loss+= loss.item()  

3.

UserWarning: volatile was removed and now has no effect. Use `with torch.no_grad():` instead.  
  label = Variable(label.cuda(), volatile=True)

解决方法：把 label = Variable(label.cuda(), volatile=True)  修改为   label = Variable(label.cuda())