3090 install 3.0.0b1

[Dimonye0531]

how to install flash-attn versions 3.0.0b1 ?

environment：
ubuntu
Python 3.12.2
torch 2.9.0.dev20250804+cu128

[Dimonye0531]

cd flash-attention-main/hopper
python setup.py install

Like this?

[tridao]

Yes

[Blaubluter]

PS C:\flash-attention-main\hopper> cd flash-attention-main/hopper
cd : Der Pfad "C:\flash-attention-main\hopper\flash-attention-main\hopper" kann nicht gefunden werden, da er nicht
vorhanden ist.
In Zeile:1 Zeichen:1

• cd flash-attention-main/hopper

•   + CategoryInfo          : ObjectNotFound: (C:\flash-attent...ion-main\hopper:String) [Set-Location], ItemNotFoundE
   xception
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetLocationCommand
  
  

PS C:\flash-attention-main\hopper> python setup.py install
fatal: not a git repository (or any of the parent directories): .git

torch.version = 2.7.1+cu128

Traceback (most recent call last):
File "C:\flash-attention-main\hopper\setup.py", line 407, in
download_and_copy(
~~~~~~~~~~~~~~~~~^
name="nvcc",
^^^^^^^^^^^^
...<4 lines>...
f"https://developer.download.nvidia.com/compute/cuda/redist/cuda_nvcc/{system}-{arch}/cuda_nvcc-{system}-{arch}-{version}-archive.tar.xz",
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "C:\flash-attention-main\hopper\setup.py", line 357, in download_and_copy
url = url_func(supported[system], arch, version)
~~~~~~~~~^^^^^^^^
KeyError: 'Windows'
PS C:\flash-attention-main\hopper>

[Dimonye0531]

I'm install it in ubuntu, don't know Windows how to solve it.