Who it is forAn engineer deploying a Vision HOPE model for batch image processing who needs lower latency on an NVIDIA GPU.
The problemA model loaded for training runs slower than needed for inference, and the README has separate fast paths for modules and full models.
The outcomeInference runs with fast inference enabled and the weights stay the same, so outputs match the original model within normal numerical differences.
What you need first
- Linux with an NVIDIA GPU, the CUDA toolkit (including nvcc), and a C++ compiler
- Python 3.10 (recommended) and CUDA 12.1
- Pretrained checkpoint from Hugging Face, GitHub Releases, or Baidu Netdisk
- For dataset tasks: ImageNet-1K, COCO 2017, or ADE20K downloaded from their official websites
Steps
- Install the classification requirements with
python -m pip install -r requirements/classification.txtandpython -m pip install --no-deps -e .. - Load the model with
create_model("visionhope_small", checkpoint_path="weights/visionhope_small.pth").cuda().eval(). (inferred, check the README) - Call
prepare_for_inference(model)fromvisionhope.inference.prepareafter loading the weights. - Run the forward pass inside
torch.inference_mode()andtorch.autocast("cuda", dtype=torch.bfloat16). - Keep an unprepared copy of the model if you also plan to continue training, because the preparation fuses parameters in place.
Prompt for your agent
Using the VisionHOPE repo (PSRben/VisionHOPE), load visionhope_small.pth from weights/, call prepare_for_inference on it, and time 100 forward passes on random CUDA inputs of shape [1, 3, 224, 224] for <target hardware>. Report the average latency before and after preparation. Verify that the prepared model still returns logits shaped [1, 1000].
Caveat. The README says prepare_for_inference fuses parameters in place, so a model prepared for inference cannot be used for training without a separate unprepared copy.
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