transformers/docs/source/en/quantization/eetq.md
Steven Liu c0f8d055ce
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Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

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Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

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Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com>
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
Co-authored-by: Quentin Gallouédec <45557362+qgallouedec@users.noreply.github.com>
2025-03-03 10:33:46 -08:00

2.6 KiB

EETQ

The Easy & Efficient Quantization for Transformers (EETQ) library supports int8 weight-only per-channel quantization for NVIDIA GPUs. It uses high-performance GEMM and GEMV kernels from FasterTransformer and TensorRT-LLM. The attention layer is optimized with FlashAttention2. No calibration dataset is required, and the model doesn't need to be pre-quantized. Accuracy degradation is negligible owing to the per-channel quantization.

EETQ further supports fine-tuning with PEFT.

Install EETQ from the release page or source code. CUDA 11.4+ is required for EETQ.

pip install --no-cache-dir https://github.com/NetEase-FuXi/EETQ/releases/download/v1.0.0/EETQ-1.0.0+cu121+torch2.1.2-cp310-cp310-linux_x86_64.whl
git clone https://github.com/NetEase-FuXi/EETQ.git
cd EETQ/
git submodule update --init --recursive
pip install .

Quantize a model on-the-fly by defining the quantization data type in [EetqConfig].

from transformers import AutoModelForCausalLM, EetqConfig

quantization_config = EetqConfig("int8")
model = AutoModelForCausalLM.from_pretrained(
    "meta-llama/Llama-3.1-8B",
    torch_dtype="auto",
    device_map="auto",
    quantization_config=quantization_config
)

Save the quantized model with [~PreTrainedModel.save_pretrained] so it can be reused again with [~PreTrainedModel.from_pretrained].

quant_path = "/path/to/save/quantized/model"
model.save_pretrained(quant_path)
model = AutoModelForCausalLM.from_pretrained(quant_path, device_map="auto")