onnxruntime/docs/get-started/install.md

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Install	Get Started	1

Install ONNX Runtime

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Contents

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Use this guide to install ONNX Runtime and its dependencies, for your target operating system, hardware, accelerator, and language.

For an overview, see this installation matrix.

Prerequisites

Linux / CPU

1. English language package with the en_US.UTF-8 locale

   • Install language-pack-en package
   • Run locale-gen en_US.UTF-8
   • Run update-locale LANG=en_US.UTF-8

2. OpenMP

   • apt-get install libgomp1, which installs libgomp.so.1

Linux / GPU

1. English language package with the en_US.UTF-8 locale

   • Install language-pack-en package
   • Run locale-gen en_US.UTF-8
   • Run update-locale LANG=en_US.UTF-8

2. CUDA 10.1 and cuDNN 7.6.5

   • Version dependencies from older ONNX Runtime releases can be found in prior release notes.

Windows / CPU

1. English language package with the en_US.UTF-8 locale

2. Visual C++ 2019 runtime

3. OpenMP

   • Comes installed with Visual C++ runtime
   • Or is also available as redist packages vc_redist.x64.exe and vc_redist.x86.exe

Windows / GPU

1. English language package with the en_US.UTF-8 locale

2. Visual C++ 2019 runtime

3. CUDA 10.1 and cuDNN 7.6.5

   • Version dependencies from older ONNX Runtime releases can be found in prior release notes.

Install

• Default CPU Provider (Eigen + MLAS)
• GPU Provider - NVIDIA CUDA
• GPU Provider - DirectML (Windows)
  • On Windows, the DirectML execution provider is recommended for optimal performance and compatibility with a broad set of GPUs.

If using pip, run pip install --upgrade pip prior to downloading.

Repository	Official build	Nightly build
Python	CPU: onnxruntime	ort-nightly (dev)
	GPU: onnxruntime-gpu	ort-gpu-nightly (dev)
C#/C/C++	CPU: Microsoft.ML.OnnxRuntime	ort-nightly (dev)
	GPU: Microsoft.ML.OnnxRuntime.Gpu	ort-nightly (dev)
Java	CPU: com.microsoft.onnxruntime/onnxruntime
	GPU: com.microsoft.onnxruntime/onnxruntime_gpu
nodejs	CPU: onnxruntime
Other	Contributed non-official packages (including Homebrew, Linuxbrew, and nixpkgs)
	These are not maintained by the core ONNX Runtime team and may have limited support; use at your discretion.

Note: Dev builds created from the master branch are available for testing newer changes between official releases. Please use these at your own risk. We strongly advise against deploying these to production workloads as support is limited for dev builds.