module 'torch' has no attribute 'accelerator'

[shandatascience]

Add Link

Link to the tutorial on the website - https://pytorch.org/tutorials/beginner/basics/quickstart_tutorial.html#creating-models

Describe the bug

Below piece of code is returning
device = torch.accelerator.current_accelerator().type if torch.accelerator.is_available() else "cpu" print(f"Using {device} device")

When running using google colab throws the below error
`---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
in <cell line: 0>()
----> 1 device = torch.accelerator.current_accelerator().type if torch.accelerator.is_available() else "cpu"
2 print(f"Using {device} device")
3
4 # Define model
5 class NeuralNetwork(nn.Module):

/usr/local/lib/python3.11/dist-packages/torch/init.py in getattr(name)
2560 return importlib.import_module(f".{name}", name)
2561
-> 2562 raise AttributeError(f"module '{name}' has no attribute '{name}'")
2563
2564

AttributeError: module 'torch' has no attribute 'accelerator'`

Correct code:
`if torch.cuda.is_available():
device = torch.device("cuda")
device_name = torch.cuda.get_device_name(0)

elif torch.backends.mps.is_available():
device = torch.device("mps")

else:
device = torch.device("cpu")

print(f"Using {device} device")`

Describe your environment

Platform: Google Colab
Cuda: Yes
Pytorch Version: 2.5.1+cu121

cc @subramen @albanD @jbschlosser

[albanD]

Hey!
This is expected as this tutorial is for the 2.6 release that will come out a bit later this week !
@svekars I think it's ok to keep this as is?

[svekars]

Sounds good to me!

[ed-norris]

Is torch.accelerator deprecated? Or new? IOW, when encountering this error, how do you fix it?

Seems like it should work, e.g., https://pytorch.org/docs/stable/accelerator.html doesn't have any obvious deprecation notes.

Also seen with https://pytorch.org/tutorials/beginner/transfer_learning_tutorial.html

Platform: Jupyter
Cuda: mps
Pytorch Version: 2.5.1

[stonepd]

@ed-norris - I just encountered the same problem, it should work if you install the latest version of pytorch in colab, follow the instructions in https://pytorch.org/tutorials/beginner/colab#pytorch-version-in-google-colab

[ishansmishra]

Hi, Any update on this?

[paulserraino]

@ishansmishra I noticed that if you run pip install torch torchvision it will install torch 2.4.0. To get around this I explicitly install torch 2.7.0 pip install torch==2.7.0

Can you check your torch version?

python -c 'import torch; print(torch.version.__version__)'

The root cause is likely due to torchvision requiring an older version of torch and will require fixing the dependency tree (or possibly upgrades need to be made to the torchvision library itself)

[Iphykay]

@ishansmishra I will suggest using the commands on here: https://pytorch.org/get-started/locally/.

I had the same error, I had to uninstall it and reinstalled again and it worked.

[jokobus]

A straight forward workaround: Comment the original line and add one of the following:

device = "cpu"
device = "cuda"
device = "cuda" if torch.cuda.is_available() else "cpu"

However note that the accelerator method should be preferred in general, as those lines are only for devices without any (used) GPU or with a Nvida GPU, but not some other accelerator.