SHA256 mismatch for "conda install pytorch"

I'm trying to install pytorch+cuda12.1 in my conda env.

I've followed the instructions on https://pytorch.org/get-started/locally/ and ran the following command:

conda install pytorch torchvision torchaudio pytorch-cuda=12.1 -c pytorch -c nvidia

The command runs smoothly for most packages, except for cuda-version, for which i get:

ChecksumMismatchError: Conda detected a mismatch between the expected content and downloaded content
for url 'https://conda.anaconda.org/nvidia/noarch/cuda-version-12.5-3.tar.bz2'.
  download saved to: C:\Users\UserName\anaconda3\pkgs\cuda-version-12.5-3.tar.bz2
  expected sha256: f13836396c27d22ff8fd446534aa3cdc0c92b1d68e5181ff2680da4c2759b117
  actual sha256: a85ae72fb1b40651095208ebe42cd595980a916e324505610ac8fc76c49164f5

I checked https://conda.anaconda.org/nvidia/noarch/, and it seems that the actual SHA256 is correct, and the expected SHA256 is actually the wrong one:

Filename	Size	Last Modified	SHA256	MD5
cuda-version-12.5-3.tar.bz2	16 KB	2024-04-16 03:01:46 +0000	a85ae72fb1b40651095208ebe42cd595980a916e324505610ac8fc76c49164f5	be95c91143996f0c33cb710cd1a39450

I found some old issues about how the PyTorch maintainers had some issues uploading some time ago, but it was supposed to be fixed already.

Is there something I can do to fix this issue?

Solution

You could always pin cuda-version to another channel.

conda install -c pytorch -c nvidia conda-forge::cuda-version=12.5 torchvision torchaudio pytorch-cuda=12.1