You can probably
wget  http://download.pytorch.org/whl/cu80/torch-0.1.12.post2-cp27-none-linux_x86_64.whl
pip install torch-0.1.12.post2-cp27-none-linux_x86_64.whl

if you want to install an older version of pytorch (0.12). That being said, I’m not sure I would recommend downgrading. If you let us know how your code is breaking in the current version of pytorch (0.20) we’d be glad to help.