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Table of Contents

[ 1.6.0 ▼ ](http://pytorch.org/docs/versions.html)

Notes

  * [ Automatic Mixed Precision examples ](notes/amp_examples.html)
  * [ Autograd mechanics ](notes/autograd.html)
  * [ Broadcasting semantics ](notes/broadcasting.html)
  * [ CPU threading and TorchScript inference ](notes/cpu_threading_torchscript_inference.html)
  * [ CUDA semantics ](notes/cuda.html)
  * [ Distributed Data Parallel ](notes/ddp.html)
  * [ Extending PyTorch ](notes/extending.html)
  * [ Frequently Asked Questions ](notes/faq.html)
  * [ Features for large-scale deployments ](notes/large_scale_deployments.html)
  * [ Multiprocessing best practices ](notes/multiprocessing.html)
  * [ Reproducibility ](notes/randomness.html)
  * [ Serialization semantics ](notes/serialization.html)
  * [ Windows FAQ ](notes/windows.html)

Language Bindings

  * [ C++ ](cpp_index.html)
  * [ Javadoc ](https://pytorch.org/javadoc/)

Python API

  * [ torch ](torch.html)
  * [ torch.nn ](nn.html)
  * [ torch.nn.functional ](nn.functional.html)
  * [ torch.Tensor ](tensors.html)
  * [ Tensor Attributes ](tensor_attributes.html)
  * [ Tensor Views ](tensor_view.html)
  * [ torch.autograd ](autograd.html)
  * [ torch.cuda ](cuda.html)
  * [ torch.cuda.amp ](amp.html)
  * [ torch.distributed ](distributed.html)
  * [ torch.distributions ](distributions.html)
  * [ torch.futures ](futures.html)
  * [ torch.hub ](hub.html)
  * [ torch.jit ](jit.html)
  * [ torch.nn.init ](nn.init.html)
  * torch.onnx 
  * [ torch.optim ](optim.html)
  * [ Complex Numbers ](complex_numbers.html)
  * [ Quantization ](quantization.html)
  * [ Distributed RPC Framework ](rpc.html)
  * [ torch.random ](random.html)
  * [ torch.sparse ](sparse.html)
  * [ torch.Storage ](storage.html)
  * [ torch.utils.bottleneck ](bottleneck.html)
  * [ torch.utils.checkpoint ](checkpoint.html)
  * [ torch.utils.cpp_extension ](cpp_extension.html)
  * [ torch.utils.data ](data.html)
  * [ torch.utils.dlpack ](dlpack.html)
  * [ torch.utils.mobile_optimizer ](mobile_optimizer.html)
  * [ torch.utils.model_zoo ](model_zoo.html)
  * [ torch.utils.tensorboard ](tensorboard.html)
  * [ Type Info ](type_info.html)
  * [ Named Tensors ](named_tensor.html)
  * [ Named Tensors operator coverage ](name_inference.html)
  * [ torch.__config__ ](__config__.html)

Libraries

  * [ torchaudio ](https://pytorch.org/audio)
  * [ torchtext ](https://pytorch.org/text)
  * [ torchvision ](torchvision/index.html)
  * [ TorchElastic ](https://pytorch.org/elastic/)
  * [ TorchServe ](https://pytorch.org/serve)
  * [ PyTorch on XLA Devices ](http://pytorch.org/xla/)

Community

  * [ PyTorch Contribution Guide ](community/contribution_guide.html)
  * [ PyTorch Governance ](community/governance.html)
  * [ PyTorch Governance | Persons of Interest ](community/persons_of_interest.html)

  * [ Docs ](index.html) >
  * torch.onnx 
  * [ ![](_static/images/view-page-source-icon.svg) ](_sources/onnx.rst.txt)

Shortcuts

#  torch.onnx  ¶

  * Example: End-to-end AlexNet from PyTorch to ONNX 

  * Tracing vs Scripting 

  * TorchVision support 

  * Limitations 

  * Supported operators 

  * Adding support for operators 

    * ATen operators 

    * Non-ATen operators 

    * Custom operators 

  * Operat