one of the variables needed for gradient computation has been modified by an inplace operation: [torch.cuda.FloatTensor [3, 1280, 28, 28]], which is output 0 of LeakyReluBackward1, is at version 2;

RuntimeError: one of the variables needed for gradient computation has been modified by an inplace operation: [torch.cuda.FloatTensor [3, 1280, 28, 28]], which is output 0 of LeakyReluBackward1, is at version 2; expected version 1 instead. Hint: enable anomaly detection to find the operation that failed to compute its gradient, with torch.autograd.set_detect_anomaly(True).

解决方法

　　将block内所有relu的inplace = True 改为false