Hi @albanD, I was stuck with this problem for a day. I did a google search and saw your comment at [Solved][Pytorch1.5] RuntimeError: one of the variables needed for gradient computation has been modified by an inplace operation - #2 by albanD. But in my scenario, it has a little bit different, i.e:
I need to optimize the model parameters over a few iterations by cross-entropy loss and optimizer optim1, and finally, take the sum of those losses computed over the iterations to update the model parameters for the last time with optimizer optim2. Unfortunately, my code has an error as in my description above. Hope you help me solve it and I appreciate that. Thank you in advance!