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HuggingFace Improves LoRA Inference Speed by 300%

·2023.12.05 09:00

Key point

HuggingFace kept the base model in memory and dynamically swapped only LoRA adapters, improving inference speed by 300%.

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Details

HuggingFace maximized service efficiency by solving the Cold Boot problem that occurs in Stable Diffusion LoRA inference.

Previously, a new LoRA request required about 25 seconds to download and set up the entire model, but after the improvement this was reduced to 3 seconds. As a result, the total response time decreased from 35 seconds to 13 seconds.

The core technical principle is as follows:

  • Keeping the base model resident: The SDXL base model, about 7GB in size, is kept warm in memory.
  • Dynamic adapter swapping: Only the lightweight LoRA adapter, just about 24MB, is quickly swapped according to the request.

Through this approach, it is now possible to efficiently serve hundreds of different LoRAs with just a small number of GPUs (fewer than 5 A10Gs).

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