Web Reference: Performing quantization to go from float32 to int8 is more tricky. Only 256 values can be represented in int8, while float32 can represent a very wide range of values. The idea is to find the best way to project our range [a, b] of float32 values to the int8 space. Quantization workflow for Hugging Face models optimum-quanto provides helper classes to quantize, save and reload Hugging Face quantized models. Dec 14, 2025 · GPTQ is a post-training quantization method specifically designed for large language models. It uses a layer-wise quantization approach with optimal brain quantization principles, computing quantization parameters based on the Hessian matrix of each layer's loss function.
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