ModuleNotFoundError: No module named 'torch'

[caoshouling]

run ' pip install -r requirements.txt' error:

Downloading xformers-0.0.13.tar.gz (292 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 292.5/292.5 kB 306.1 kB/s eta 0:00:00
Preparing metadata (setup.py) ... error
error: subprocess-exited-with-error

× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [6 lines of output]
Traceback (most recent call last):
File "", line 2, in
File "", line 34, in
File "C:\Users\Administrator\AppData\Local\Temp\pip-install-50qgtq26\xformers_d607119a9f054b879af1d2d4fcb11e5e\setup.py", line 18, in
import torch
ModuleNotFoundError: No module named 'torch'
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.

[GregBahm]

I also encountered this issue. Attempting to run the command in Windows Powershell on Windows 11 in administrator mode. After some googling, I tried running "pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118" thinking maybe the docs assumed PyTorch was already installed (whatever that is.)

But this just yielded a different error:

 Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error

  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [8 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "C:\Users\Owner\AppData\Local\Temp\pip-install-sto6g2ul\xformers_788d1f75b7d344f7a30fc98ded0215fd\setup.py", line 239, in <module>
          ext_modules=get_extensions(),
        File "C:\Users\Owner\AppData\Local\Temp\pip-install-sto6g2ul\xformers_788d1f75b7d344f7a30fc98ded0215fd\setup.py", line 157, in get_extensions
          raise RuntimeError(
      RuntimeError: CUTLASS submodule not found. Did you forget to run `git submodule update --init --recursive` ?
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

I thought about googling for an installation of this "CUTLASS" thing but I'm worried this issue is systemic,