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.. _home:
Welcome to the ExecuTorch Documentation
=======================================
.. important::
v0.4.0 is a beta release of ExecuTorch. As of this release, the API will
follow the `API Lifecycle and Deprecation Policy <api-life-cycle.html>`__,
and the ``.pte`` binary format will comply with the `Runtime Compatibility
Policy
<https://github.com/pytorch/executorch/tree/main/runtime/COMPATIBILITY.md>`__.
This helps ensure that application developers can update to the latest
version of ExecuTorch without breaking existing integration code, in
accordance with these policies. If any issues arise or compatibility breaks
occur, please `report them in GitHub
<https://github.com/pytorch/executorch/issues/new/choose>`__.
We welcome any feedback, suggestions, and bug reports from the community
to help us improve the technology. Please use the `PyTorch Forums
<https://discuss.pytorch.org/c/executorch>`__ for discussion and feedback
about ExecuTorch using the **ExecuTorch** category, and our `GitHub
repository <https://github.com/pytorch/executorch/issues>`__ for bug
reporting.
.. raw:: html
<div class="et-page-column-row">
<div class="et-page-column1"><p><strong>ExecuTorch</strong> is a PyTorch platform that provides infrastructure to run PyTorch programs everywhere from AR/VR wearables to standard on-device iOS and Android mobile deployments. One of the main goals for ExecuTorch is to enable wider customization and deployment capabilities of the PyTorch programs.</p>
<p>ExecuTorch heavily relies on such PyTorch technologies as <a href="https://pytorch.org/docs/stable/torch.compiler.html">torch.compile</a> and <a href="https://pytorch.org/docs/main/export.html">torch.export</a>. If you are not familiar with these APIs, you might want to read about them in the PyTorch documentation before diving into the ExecuTorch documentation.</p></div>
<div class="et-page-column2"><img src="_static/img/ExecuTorch-Logo-cropped.svg" alt="ExecuTorch logo" title="ExecuTorch logo"></div>
</div>
The ExecuTorch source is hosted on GitHub at
https://github.com/pytorch/executorch.
Getting Started
~~~~~~~~~~~~~~~
Topics in this section will help you get started with ExecuTorch.
.. grid:: 3
.. grid-item-card:: :octicon:`file-code;1em`
What is ExecuTorch?
:img-top: _static/img/card-background.svg
:link: intro-overview.html
:link-type: url
A gentle introduction to ExecuTorch. In this section,
you will learn about main features of ExecuTorch
and how you can use them in your projects.
.. grid-item-card:: :octicon:`file-code;1em`
Getting started with ExecuTorch
:img-top: _static/img/card-background.svg
:link: getting-started-setup.html
:link-type: url
A step-by-step tutorial on how to get started with
ExecuTorch.
.. grid-item-card:: :octicon:`file-code;1em`
ExecuTorch Llama
:img-top: _static/img/card-background.svg
:link: llm/llama.html
:link-type: url
Learn about running Llama models via ExecuTorch
.. toctree::
:glob:
:maxdepth: 1
:caption: Introduction
:hidden:
intro-overview
intro-how-it-works
getting-started-architecture
concepts
.. toctree::
:glob:
:maxdepth: 1
:caption: Getting Started
:hidden:
getting-started-setup
export-overview
runtime-build-and-cross-compilation
.. toctree::
:glob:
:maxdepth: 1
:caption: Tutorials
:hidden:
tutorials/export-to-executorch-tutorial
running-a-model-cpp-tutorial
extension-module
extension-tensor
tutorials/devtools-integration-tutorial
apple-runtime
demo-apps-ios
demo-apps-android
examples-end-to-end-to-lower-model-to-delegate
tutorial-xnnpack-delegate-lowering
build-run-vulkan
..
Alphabetical by backend name. Be sure to keep the same order in the
customcarditem entries below.
executorch-arm-delegate-tutorial
build-run-coreml
build-run-mediatek-backend
build-run-mps
build-run-qualcomm-ai-engine-direct-backend
build-run-xtensa
.. toctree::
:glob:
:maxdepth: 2
:caption: Working with LLMs
:hidden:
Llama <llm/llama>
Llama on Android <llm/llama-demo-android>
Llama on iOS <llm/llama-demo-ios>
Llama on Android via Qualcomm backend <llm/build-run-llama3-qualcomm-ai-engine-direct-backend>
Intro to LLMs in Executorch <llm/getting-started>
.. toctree::
:glob:
:maxdepth: 1
:caption: API Reference
:hidden:
export-to-executorch-api-reference
executorch-runtime-api-reference
runtime-python-api-reference
api-life-cycle
.. toctree::
:glob:
:maxdepth: 1
:caption: IR Specification
:hidden:
ir-exir
ir-ops-set-definition
.. toctree::
:glob:
:maxdepth: 1
:caption: Compiler Entry Points
:hidden:
compiler-delegate-and-partitioner
compiler-backend-dialect
compiler-custom-compiler-passes
compiler-memory-planning
.. toctree::
:glob:
:maxdepth: 1
:caption: Runtime
:hidden:
runtime-overview
runtime-backend-delegate-implementation-and-linking
runtime-platform-abstraction-layer
portable-cpp-programming
pte-file-format
.. toctree::
:glob:
:maxdepth: 1
:caption: Quantization
:hidden:
quantization-overview
.. toctree::
:glob:
:maxdepth: 1
:caption: Kernel Library
:hidden:
kernel-library-overview
kernel-library-custom-aten-kernel
kernel-library-selective-build
.. toctree::
:glob:
:maxdepth: 1
:caption: Backend Delegates
:hidden:
native-delegates-executorch-xnnpack-delegate
native-delegates-executorch-vulkan-delegate
backend-delegates-integration
backend-delegates-dependencies
debug-backend-delegate
.. toctree::
:glob:
:maxdepth: 1
:caption: Developer Tools
:hidden:
devtools-overview
bundled-io
etrecord
etdump
runtime-profiling
model-debugging
model-inspector
memory-planning-inspection
delegate-debugging
devtools-tutorial
.. toctree::
:glob:
:maxdepth: 1
:caption: Contributing
:hidden:
contributing
Tutorials and Examples
~~~~~~~~~~~~~~~~~~~~~~
Ready to experiment? Check out some of the
ExecuTorch tutorials.
.. customcardstart::
.. customcarditem::
:header: Exporting to ExecuTorch Tutorial
:card_description: A tutorial for exporting a model and lowering a it to be runnable on the ExecuTorch runtime.
:image: _static/img/generic-pytorch-logo.png
:link: tutorials/export-to-executorch-tutorial.html
:tags: Export,Delegation,Quantization
.. customcarditem::
:header: Running an ExecuTorch Model C++ Tutorial
:card_description: A tutorial for setting up memory pools, loading a model, setting inputs, executing the model, and retrieving outputs on device.
:image: _static/img/generic-pytorch-logo.png
:link: running-a-model-cpp-tutorial.html
:tags:
.. customcarditem::
:header: Simplified Runtime APIs Tutorial
:card_description: A simplified tutorial for executing the model on device.
:image: _static/img/generic-pytorch-logo.png
:link: extension-module.html
:tags:
.. customcarditem::
:header: Managing Tensor Memory in C++ Tutorial
:card_description: A tutorial for managing the dynamic memory when working with tensors.
:image: _static/img/generic-pytorch-logo.png
:link: extension-tensor.html
:tags:
.. customcarditem::
:header: Using the ExecuTorch Developer Tools to Profile a Model
:card_description: A tutorial for using the ExecuTorch Developer Tools to profile and analyze a model with linkage back to source code.
:image: _static/img/generic-pytorch-logo.png
:link: tutorials/devtools-integration-tutorial.html
:tags: devtools
.. customcarditem::
:header: Integrating and Running ExecuTorch on Apple Platforms
:card_description: A tutorial on integrating, using, and troubleshooting the ExecuTorch runtime on iOS.
:image: _static/img/generic-pytorch-logo.png
:link: apple-runtime.html
:tags: iOS, macOS
.. customcarditem::
:header: Building an ExecuTorch iOS Demo App
:card_description: A demo tutorial that explains how to build ExecuTorch into iOS frameworks and run an iOS app.
:image: _static/img/demo_ios_app.jpg
:link: demo-apps-ios.html
:tags: Delegation,iOS
.. customcarditem::
:header: Building an ExecuTorch Android Demo App
:card_description: A demo tutorial that explains how to build ExecuTorch into a JNI library and build an Android app.
:image: _static/img/android_app.png
:link: demo-apps-android.html
:tags: Delegation,Android
.. customcarditem::
:header: Lowering a Model as a Delegate
:card_description: An end-to-end example showing how to lower a model as a delegate
:image: _static/img/generic-pytorch-logo.png
:link: examples-end-to-end-to-lower-model-to-delegate.html
:tags: Export,Delegation
..
First-party backends that are good intros for readers.
.. customcarditem::
:header: Building and Running ExecuTorch with XNNPACK Backend
:card_description: A demo tutorial for lowering and exporting models with the XNNPACK Backend
:image: _static/img/generic-pytorch-logo.png
:link: tutorial-xnnpack-delegate-lowering.html
:tags: Export,Backend,Delegation,Quantization,XNNPACK
.. customcarditem::
:header: Building and Running ExecuTorch with Vulkan Backend
:card_description: A tutorial that walks you through the process of building ExecuTorch with Vulkan Backend
:image: _static/img/generic-pytorch-logo.png
:link: build-run-vulkan.html
:tags: Export,Backend,Delegation,Vulkan
..
Alphabetical by backend name. Be sure to keep the same order in the Tutorials
toctree entry above.
.. customcarditem::
:header: Building and Running ExecuTorch with ARM Ethos-U Backend
:card_description: A tutorial that walks you through the process of building ExecuTorch with ARM Ethos-U Backend
:image: _static/img/generic-pytorch-logo.png
:link: executorch-arm-delegate-tutorial.html
:tags: Export,Backend,Delegation,ARM,Ethos-U
.. customcarditem::
:header: Building and Running ExecuTorch with CoreML Backend
:card_description: A tutorial that walks you through the process of building ExecuTorch with CoreML Backend
:image: _static/img/generic-pytorch-logo.png
:link: build-run-coreml.html
:tags: Export,Backend,Delegation,CoreML
.. customcarditem::
:header: Building and Running ExecuTorch with MediaTek Backend
:card_description: A tutorial that walks you through the process of building ExecuTorch with MediaTek Backend
:image: _static/img/generic-pytorch-logo.png
:link: build-run-mediatek-backend.html
:tags: Export,Backend,Delegation,MediaTek
.. customcarditem::
:header: Building and Running ExecuTorch with MPS Backend
:card_description: A tutorial that walks you through the process of building ExecuTorch with MPSGraph Backend
:image: _static/img/generic-pytorch-logo.png
:link: build-run-mps.html
:tags: Export,Backend,Delegation,MPS,MPSGraph
.. customcarditem::
:header: Building and Running ExecuTorch with Qualcomm AI Engine Direct Backend
:card_description: A tutorial that walks you through the process of building ExecuTorch with Qualcomm AI Engine Direct Backend
:image: _static/img/generic-pytorch-logo.png
:link: build-run-qualcomm-ai-engine-direct-backend.html
:tags: Export,Backend,Delegation,QNN
.. customcarditem::
:header: Building and Running ExecuTorch on Xtensa HiFi4 DSP
:card_description: A tutorial that walks you through the process of building ExecuTorch for an Xtensa Hifi4 DSP using custom operators
:image: _static/img/generic-pytorch-logo.png
:link: build-run-xtensa.html
:tags: Export,Custom-Operators,DSP,Xtensa
.. customcardend::