Added support for torch-2.8.0+cu128 to support Blackwell (RTX50XX) graphics cards. #3653
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As it stands, nerfstudio is not compatible with Blackwell Nvidia GPU architecture, as the only torch/cuda version supporting sm_120 architectures is 2.8.0+cu128.
Some of the functions used in nerfstudio have been deprecated since torch 2.6. The proposed changes would make nerfstudio compatible with the Blackwell architecture and the latest version of torch while retaining backward compatibility with older torch versions.
Fixes:
torch.load(..., weights_only=True)(the new default) will refuse to deserialize any Python globals that arent explicitly allow-listed, thus explicitly settingweights_only=False.torch.cuda.amp.custom_bwdis deprecated. Changes totorch.amp.custom_bwd(device_type='cuda')