Received a fatal error！！

[znsoftm]

test fewshot.py, get the below fatal error.

pytorch 1.10.0

for step, inputs in enumerate(train_dataloader):
            if use_cuda:
                inputs = inputs.cuda()
            logits = prompt_model(inputs)
            labels = inputs['label']
            loss = loss_func(logits, labels)
            loss.backward()  # it causes the fatal error.
            torch.nn.utils.clip_grad_norm_(prompt_model.parameters(), 1.0)

            tot_loss += loss.item()

            optimizer1.step()

one of the variables needed for gradient computation has been modified by an inplace operation: [torch.cuda.FloatTensor [20, 1076]], which is output 0 of SoftmaxBackward0, is at version 1; expected version 0 instead. Hint: the backtrace further above shows the operation that failed to compute its gradient. The variable in question was changed in there or anywhere later. Good luck!

[znsoftm]

Browsed much materials, pytorch 1.4 or below can support it. wish somebody can fix it.

[ShengdingHu]

I run on pytorch 1.9.0. But it is strange that it requires 1.4 or below to solve the bug. Can you start a new virtual environment and test it?

[znsoftm]

Is it correct on pytorch 1.9.0? To create a virtual env is difficult. Pytorch 1.4 or below is not compatible with cuda 11.7. Guess need to downgrade my cuda? (not cudatoolkit）

[znsoftm]

After verification, pytorch 1.9 does not work! pytorch 1.9, cuda 11.7, python 3.8. nvidia 3090

[znsoftm]

Maybe you guys should fix it in openprompt.

[znsoftm]

For torch 1.4, we found that transofrmers complains torch>=1.5.0 is required for a normal functioning of this module, but found torch==1.4.0+cu92. Could you please tell us what configuration you are using ?

[znsoftm]

openprompt 1.0.1 pytorch 1.9, cuda 11.6/7 for fewshot.py, it doesn't work. For pytorch 1.4, it is impossible, because transformer 4.2 needs the version 1.5 of pytorch. please verify the combination: pytorch 1.9 or above, cuda 11.6/7 openprompt 1.01 ( up-to-date)

[Knightzhr]

can u run fewshot.py? i have the same error

[znsoftm]

No, we can not.

[BaoZi-chu]

I had the same issue, did anyone fix it