bigscience-workshop/petals

The prompt tuning example (prompt-tuning-sst2) don't work

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#241 opened on Jan 29, 2023

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Description

Hi, I have tried to run the notebook example you have published (without editing) in colab but it doesn't work... I get the following error:

RuntimeError                              Traceback (most recent call last)
[<ipython-input-12-7f7d7fa267e9>](https://localhost:8080/#) in <module>
     17 
     18         model.train()
---> 19         outputs = model(**batch)
     20         loss = outputs.loss
     21         loss.backward()

3 frames
[/usr/local/lib/python3.8/dist-packages/torch/nn/modules/linear.py](https://localhost:8080/#) in forward(self, input)
    112 
    113     def forward(self, input: Tensor) -> Tensor:
--> 114         return F.linear(input, self.weight, self.bias)
    115 
    116     def extra_repr(self) -> str:

RuntimeError: expected scalar type Half but found Float

It is probably about the transformers version out of date but petals 1.1.1 requires transformers==4.25.1

Contributor guide

Research direction
Check the transformers version requirement (petals requires transformers==4.25.1) and ensure mixed precision settings (Half vs Float) are consistent. Inspect the model's dtype and input tensor dtype.
Tech stack
pythonpytorch
Domain
backendmachine learningai
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
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Half day
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Active
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Clear
Prerequisites
PythonPyTorch
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60