Intel® Neural Compressor aims to provide popular model compression techniques such as quantization, pruning (sparsity), distillation, and neural architecture search on mainstream frameworks such as TensorFlow, PyTorch, ONNX Runtime, and MXNet, as well as Intel extensions such as Intel Extension for TensorFlow and Intel Extension for PyTorch. In particular, the tool provides the key features, typical examples, and open collaborations as below:

• Support a wide range of Intel hardware such as Intel Xeon Scalable Processors, Intel Xeon CPU Max Series, Intel Data Center GPU Flex Series, and Intel Data Center GPU Max Series with extensive testing; support AMD CPU, ARM CPU, and NVidia GPU through ONNX Runtime with limited testing

• Validate popular LLMs such as LLama2, Falcon, GPT-J, Bloom, OPT, and more than 10,000 broad models such as Stable Diffusion, BERT-Large, and ResNet50 from popular model hubs such as Hugging Face, Torch Vision, and ONNX Model Zoo, by leveraging zero-code optimization solution Neural Coder and automatic accuracy-driven quantization strategies

• Collaborate with cloud marketplaces such as Google Cloud Platform, Amazon Web Services, and Azure, software platforms such as Alibaba Cloud, Tencent TACO and Microsoft Olive, and open AI ecosystem such as Hugging Face, PyTorch, ONNX, ONNX Runtime, and Lightning AI

• [2024/03] A new SOTA approach AutoRound Weight-Only Quantization on Intel Gaudi2 AI accelerator is available for LLMs.

pip install neural-compressor

Note: Further installation methods can be found under Installation Guide. check out our FAQ for more details.

Setting up the environment:

pip install "neural-compressor>=2.3" "transformers>=4.34.0" torch torchvision

After successfully installing these packages, try your first quantization program.

Following example code demonstrates Weight-Only Quantization on LLMs, it supports Intel CPU, Intel Gauid2 AI Accelerator, Nvidia GPU, best device will be selected automatically.

To try on Intel Gaudi2, docker image with Gaudi Software Stack is recommended, please refer to following script for environment setup. More details can be found in Gaudi Guide.

docker run -it --runtime=habana -e HABANA_VISIBLE_DEVICES=all -e OMPI_MCA_btl_vader_single_copy_mechanism=none --cap-add=sys_nice --net=host --ipc=host vault.habana.ai/gaudi-docker/1.14.0/ubuntu22.04//habanalabs/pytorch-installer-2.1.1:latest

# Check the container ID
docker ps

# Login into container
docker exec -it <container_id> bash

# Install the optimum-habana
pip install --upgrade-strategy eager optimum[habana]

# Install INC/auto_round
pip install neural-compressor auto_round

Run the example:

from transformers import AutoModel, AutoTokenizer

from neural_compressor.config import PostTrainingQuantConfig
from neural_compressor.quantization import fit
from neural_compressor.adaptor.torch_utils.auto_round import get_dataloader

model_name = "EleutherAI/gpt-neo-125m"
float_model = AutoModel.from_pretrained(model_name)
tokenizer = AutoTokenizer.from_pretrained(model_name, trust_remote_code=True)
dataloader = get_dataloader(tokenizer, seqlen=2048)

woq_conf = PostTrainingQuantConfig(
    approach="weight_only",
    op_type_dict={
        ".*": {  # match all ops
            "weight": {
                "dtype": "int",
                "bits": 4,
                "algorithm": "AUTOROUND",
            },
        }
    },
)
quantized_model = fit(model=float_model, conf=woq_conf, calib_dataloader=dataloader)

Note:

To try INT4 model inference, please directly use Intel Extension for Transformers, which leverages Intel Neural Compressor for model quantization.

from torchvision import models

from neural_compressor.config import PostTrainingQuantConfig
from neural_compressor.data import DataLoader, Datasets
from neural_compressor.quantization import fit

float_model = models.resnet18()
dataset = Datasets("pytorch")["dummy"](shape=(1, 3, 224, 224))
calib_dataloader = DataLoader(framework="pytorch", dataset=dataset)
static_quant_conf = PostTrainingQuantConfig()
quantized_model = fit(model=float_model, conf=static_quant_conf, calib_dataloader=calib_dataloader)

Note: Further documentations can be found at User Guide.

• Blog by Intel: Effective Weight-Only Quantization for Large Language Models with Intel® Neural Compressor (Oct 2023)
• EMNLP'2023 (Under Review): TEQ: Trainable Equivalent Transformation for Quantization of LLMs (Sep 2023)
• arXiv: Efficient Post-training Quantization with FP8 Formats (Sep 2023)
• arXiv: Optimize Weight Rounding via Signed Gradient Descent for the Quantization of LLMs (Sep 2023)
• NeurIPS'2022: Fast Distilbert on CPUs (Oct 2022)
• NeurIPS'2022: QuaLA-MiniLM: a Quantized Length Adaptive MiniLM (Oct 2022)

Note: View Full Publication List.

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• Email: welcome to raise any interesting research ideas on model compression techniques by email for collaborations.
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