Anaconda

https://www.anaconda.com/docs/main#quick-command-line-install

python -m pip install pip==24.0

Commands:

conda create -n wan python=3.11 -y && conda activate wan

conda install gcc_linux-64 gxx_linux-64 -y

conda install cuda -c nvidia -y

pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu126

pip install torch==2.3.1 torchvision==0.18.1 torchaudio==2.3.1 - index-url https://download.pytorch.org/whl/cu121

deleting conda environment safely

conda env remove --name myenv

conda env list

conda install cudnn=9.1

Fehler

_pickle.UnpicklingError: Weights only load failed. This file can still be loaded, to do so you have two options, do those steps only if you trust the source of the checkpoint.
(1) In PyTorch 2.6, we changed the default value of the weights_only argument in torch.load from False to True. Re-running torch.load with weights_only set to False will likely succeed, but it can result in arbitrary code execution. Do it only if you got the file from a trusted source.
(2) Alternatively, to load with weights_only=True please check the recommended steps in the following error message.
WeightsUnpickler error: Unsupported global: GLOBAL pathlib.PosixPath was not an allowed global by default. Please use torch.serialization.add_safe_globals([PosixPath]) or the torch.serialization.safe_globals([PosixPath]) context manager to allowlist this global if you trust this class/function.

just use a version off pytorche lower than 2.6
im using this version on my 4050 and it worked : # CUDA 11.8
pip install torch==2.0.0 torchvision==0.15.1 torchaudio==2.0.1 --index-url https://download.pytorch.org/whl/cu118

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