fal/AuraSR · CPU inference

In the main (only) aura file you get after pip install aura-sr...
the device: str = "cpu", "mps" etc

also the line: checkpoint = torch.load(hf_model_path / "model.ckpt")

should be changed to:
checkpoint = torch.load(hf_model_path / "model.ckpt", map_location=torch.device("cpu"))


class AuraSR:
    def __init__(self, config: dict[str, Any], device: str = "cpu"):
        self.upsampler = UnetUpsampler(**config).to(device)
        self.input_image_size = config["input_image_size"]

    @classmethod
    def from_pretrained(cls, model_id: str = "fal-ai/AuraSR"):
        import json
        import torch
        from pathlib import Path
        from huggingface_hub import snapshot_download

        hf_model_path = Path(snapshot_download(model_id))
        config = json.loads((hf_model_path / "config.json").read_text())
        model = cls(config)
        checkpoint = torch.load(hf_model_path / "model.ckpt", map_location=torch.device("cpu"))
        model.upsampler.load_state_dict(checkpoint, strict=True)
        return model