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Intel® Neural Compressor (formerly known as Intel® Low Precision Optimization Tool), targeting to provide unified APIs for network compression technologies, such as low precision quantization, sparsity, pruning, knowledge distillation, across different deep learning frameworks to pursue optimal inference performance.

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Intel® Neural Compressor

An open-source Python library supporting popular model compression techniques on all mainstream deep learning frameworks (TensorFlow, PyTorch, ONNX Runtime, and MXNet)

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Intel® Neural Compressor, formerly known as Intel® Low Precision Optimization Tool, is an open-source Python library that runs on Intel CPUs and GPUs, which delivers unified interfaces across multiple deep-learning frameworks for popular network compression technologies such as quantization, pruning, and knowledge distillation. This tool supports automatic accuracy-driven tuning strategies to help the user quickly find out the best quantized model. It also implements different weight-pruning algorithms to generate a pruned model with predefined sparsity goal. It also supports knowledge distillation to distill the knowledge from the teacher model to the student model. Intel® Neural Compressor is a critical AI software component in the Intel® oneAPI AI Analytics Toolkit.

Note: GPU support is under development.

Visit the Intel® Neural Compressor online document website at: https://intel.github.io/neural-compressor.

Installation

Prerequisites

Python version: 3.7, 3.8, 3.9, 3.10

Install on Linux

  • Release binary install
    # install stable basic version from pip
    pip install neural-compressor
    # Or install stable full version from pip (including GUI)
    pip install neural-compressor-full
  • Nightly binary install
    git clone https://github.com/intel/neural-compressor.git
    cd neural-compressor
    pip install -r requirements.txt
    # install nightly basic version from pip
    pip install -i https://test.pypi.org/simple/ neural-compressor
    # Or install nightly full version from pip (including GUI)
    pip install -i https://test.pypi.org/simple/ neural-compressor-full

More installation methods can be found at Installation Guide. Please check out our FAQ for more details.

Getting Started

Quantization with Python API

# A TensorFlow Example
pip install tensorflow
# Prepare fp32 model
wget https://storage.googleapis.com/intel-optimized-tensorflow/models/v1_6/mobilenet_v1_1.0_224_frozen.pb
import tensorflow as tf
from neural_compressor.experimental import Quantization, common
tf.compat.v1.disable_eager_execution()
quantizer = Quantization()
quantizer.model = './mobilenet_v1_1.0_224_frozen.pb'
dataset = quantizer.dataset('dummy', shape=(1, 224, 224, 3))
quantizer.calib_dataloader = common.DataLoader(dataset)
quantizer.fit()

Quantization with GUI

# An ONNX Example
pip install onnx==1.12.0 onnxruntime==1.12.1 onnxruntime-extensions
# Prepare fp32 model
wget https://github.com/onnx/models/raw/main/vision/classification/resnet/model/resnet50-v1-12.onnx
# Start GUI
inc_bench
Architecture

Quantization with Auto-coding API (Experimental)

from neural_coder import auto_quant
auto_quant(
    code="https://github.com/huggingface/transformers/blob/v4.21-release/examples/pytorch/text-classification/run_glue.py",
    args="--model_name_or_path albert-base-v2 \
          --task_name sst2 \
          --do_eval \
          --output_dir result \
          --overwrite_output_dir",
)

System Requirements

Intel® Neural Compressor supports systems based on Intel 64 architecture or compatible processors that are specifically optimized for the following CPUs:

  • Intel Xeon Scalable processor (formerly Skylake, Cascade Lake, Cooper Lake, and Icelake)
  • Future Intel Xeon Scalable processor (code name Sapphire Rapids)

Validated Software Environment

  • OS version: CentOS 8.4, Ubuntu 20.04
  • Python version: 3.7, 3.8, 3.9, 3.10
Framework TensorFlow Intel TensorFlow PyTorch IPEX ONNX Runtime MXNet
Version 2.9.1
2.8.2
2.7.3
2.9.1
2.8.0
2.7.0
1.12.0+cpu
1.11.0+cpu
1.10.0+cpu
1.12.0
1.11.0
1.10.0
1.11.0
1.10.0
1.9.0
1.8.0
1.7.0
1.6.0

Note: Set the environment variable TF_ENABLE_ONEDNN_OPTS=1 to enable oneDNN optimizations if you are using TensorFlow v2.6 to v2.8. oneDNN is the default for TensorFlow v2.9.

Validated Models

Intel® Neural Compressor validated 420+ examples for quantization with a performance speedup geomean of 2.2x and up to 4.2x on VNNI while minimizing accuracy loss. Over 30 pruning and knowledge distillation samples are also available. More details for validated models are available here.

Documentation

Overview
Architecture Examples GUI APIs
Intel oneAPI AI Analytics Toolkit AI and Analytics Samples
Basic API
Transform Dataset Metric Objective
Deep Dive
Quantization Pruning (Sparsity) Knowledge Distillation Mixed Precision Orchestration
Benchmarking Distributed Training Model Conversion TensorBoard
Distillation for Quantization Neural Coder (No-Code Solution)
Advanced Topics
Adaptor Strategy Reference Example

Selected Publications

View our full publication list.

Additional Content

Hiring

We are actively hiring. Send your resume to [email protected] if you are interested in model compression techniques.

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Intel® Neural Compressor (formerly known as Intel® Low Precision Optimization Tool), targeting to provide unified APIs for network compression technologies, such as low precision quantization, sparsity, pruning, knowledge distillation, across different deep learning frameworks to pursue optimal inference performance.

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