Using DeGirum PySDK, DeGirum Tools, and Hailo Hardware

This repository provides a comprehensive guide on using DeGirum PySDK, DeGirum Tools, and Hailo hardware for efficient AI inference. These tools simplify edge AI development by enabling seamless integration, testing, and deployment of AI models on multiple hardware platforms, including Hailo-8 and Hailo-8L.

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Table of Contents

• Introduction
• Prerequisites
• Installation
• Running and Configuring Jupyter Notebooks
• Additional Resources

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Introduction

DeGirum provides a powerful suite of tools to simplify the development and deployment of edge AI applications:

• DeGirum PySDK: The core library for integrating AI inference capabilities into applications.
• DeGirum Tools: Utilities for benchmarking, streaming, and interacting with DeGirum's model zoo.

These tools are designed to be hardware-agnostic, enabling developers to build scalable, flexible solutions without being locked into a specific platform.

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Prerequisites

• Hailo Tools Installed: Ensure that Hailo's tools and SDK are properly installed and configured. Refer to Hailo's documentation for detailed setup instructions. Also, enable the HailoRT Multi-Process service as per HailoRT documentation:

sudo systemctl enable --now hailort.service  # for Ubuntu

• Hailo Runtime Compatibility:

DeGirum PySDK supports Hailo Runtime versions 4.19.0, 4.20.0, 4.21.0 and 4.22.0. Ensure your Hailo environment is configured to use one of these versions.

• Python 3.9 or Later: Ensure Python is installed on your system. You can check your Python version using:

python3 --version

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Installation

The best way to get started is to clone this repository and set up a virtual environment to keep dependencies organized. Follow these steps:

1. Clone the Repository

git clone https://github.com/DeGirum/hailo_examples.git
cd hailo_examples

2. Create a Virtual Environment

To keep the Python environment isolated, create a virtual environment:

Linux/macOS

python3 -m venv degirum_env
source degirum_env/bin/activate

Windows

python3 -m venv degirum_env
degirum_env\Scripts\activate

3. Install Required Dependencies

Install all necessary packages from requirements.txt:

pip install -r requirements.txt

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4. Add Virtual Environment to Jupyter

If you plan to use Jupyter Notebooks, ensure the virtual environment is available as a Jupyter kernel.

Step 1: Activate the Virtual Environment (if not already active)

If you are not already inside the virtual environment, activate it:

Linux/macOS:

source degirum_env/bin/activate

Windows:

degirum_env\Scripts\activate

Step 2: Ensure the Virtual Environment is Available in Jupyter

Since notebook and ipykernel are already installed via requirements.txt, simply run:

python -m ipykernel install --user --name=degirumenv --display-name "Python (degirumenv)"

This ensures that Jupyter recognizes the virtual environment as an available kernel.

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5. Verify Installation

To ensure that everything is set up correctly, run the provided test script:

python test.py

This script will:

• Check system information.
• Verify that Hailo hardware is recognized.
• Load and run inference with a sample AI model.

If the test runs successfully, your environment is properly configured.

Running and Configuring Jupyter Notebooks

This repository includes an examples folder containing multiple use case examples demonstrating how to run AI inference using DeGirum PySDK and Hailo hardware. You can find detailed descriptions and usage instructions for each example in the Examples README.

1. Start Jupyter Notebook

Now that the Jupyter environment is set up, you can start Jupyter Notebook:

jupyter notebook

This will open Jupyter in your web browser, allowing you to navigate to the examples folder and run the available notebooks.

2. Ensure the Correct Kernel is Selected

When opening a notebook:

• Go to Kernel → Change Kernel.
• Select Python (degirum_env) to ensure the notebook runs inside the correct virtual environment.

3. Default Notebook Settings and Customization

Each Jupyter Notebook in this repository is pre-configured with default inference settings, including the inference environment, model zoo location, and target hardware. However, you can modify these values if your setup requires different configurations.

Below are the default settings you will find in the notebooks, which you can adjust as needed:

Select Inference Host Address

The inferencehostaddress determines where AI inference will be executed:

# Use local inference (e.g., when running on a device equipped with Hailo8/Hailo8L)
inferencehostaddress = "@local"
Alternative: Specify a local server by IP or hostname
inferencehostaddress = "localhost"
Alternative: Use DeGirum AI Hub for cloud-based inference
inferencehostaddress = "@cloud"

Choose Model Zoo Location

The zoo_url specifies where AI models are stored:

# Use DeGirum’s cloud model zoo (recommended for Hailo models)
zoo_url = "degirum/hailo"
Alternative: Use a local directory containing models
zoo_url = "../models"

Set Authentication Token

The token is required only for cloud inference with DeGirum AI Hub:

# No token needed for local inference
token = ''
Alternative: Fetch token for cloud inference
token = degirumtools.gettoken()  # Use this when running on AI Hub

Specify Target Hardware

The device_type defines the hardware used for inference:

# Default: Hailo8L device
device_type = "HAILORT/HAILO8L"
Alternative: Hailo8 device (Note: Hailo8L models work on Hailo8, but not vice versa)
device_type = "HAILORT/HAILO8"

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Additional Resources

• Hailo Model Zoo: Explore the full list of models optimized for Hailo hardware.
• DeGirum Documentation
• Hailo Documentation