"The installed version of bitsandbytes was compiled without GPU support" CUDA problem on Windows 10

[AlexxB31]

Hello, I get always an error, when I run python -m bitsandbytes

"The installed version of bitsandbytes was compiled without GPU support. 8-bit optimizers, 8-bit multiplication, and GPU quantization are unavailable.
warn("The installed version of bitsandbytes was compiled without GPU support. "
function 'cadam32bit_grad_fp32' not found

The main issue is a failed Dreambooth initialization, which ends with:
"CUDA Setup failed despite GPU being available."

CUDA is installed, I have added it as environment to the "Path" and also created a LD_LIBRARY_PATH as demanded
the path is:
C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.3
(just in case this is the wrong kind of cuda)

I have no more idea... Please help, thank

[Greg0mega]

Yes, I get his too now all of a sudden.

[offmybach]

did you figure it out yet?

[AlexxB31]

yes, the solution for me was in another thread here (#858)
The folder "bitsandbytes" inside "venv/.../site-packages" must be replaced with a copy of the folder "bitsandbytes" inside "appdata/.../site-packages" .
If you compare you will see, that the folder in appdata has much more cuda items.

A copy of the full description, just in my words is here:

1. Open cmd, run this: python.exe -m pip install bitsandbytes-windows

go to C:\Users\Me\AppData\Local\Programs\Python\Python310\Lib\site-packages

or wherever you have installed Python 3.10

2. copy the "bitsandbytes" folder.

   paste and replace the folder in your "\venv\Lib\site-packages"

for me is C:\stable-diffusion-webui\venv\Lib\site-packages.

[yanhaoYh]

thanks it sooo useful