export.py

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import torch

torch.hub._validate_not_a_forked_repo = lambda a, b, c: True

model = (
    torch.hub.load("pytorch/vision:v0.10.0", "resnet50", pretrained=True)
    .eval()
    .to("cuda")
)
traced_model = torch.jit.trace(model, torch.randn(1, 3, 224, 224).to("cuda"))
torch.jit.save(traced_model, "model.pt")