# paddle2onnx

**Repository Path**: SearchSource/paddle2onnx

## Basic Information

- **Project Name**: paddle2onnx
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-08-21
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

### WORK-IN-PROGRESS

# PaddlePaddle to ONNX model convertor

Converts a PaddlePaddle model (`ProgramDesc` + parameters) into an ONNX graph. Uses the ONNX pip library and targets PaddlePaddle **Fluid**. Built in Python 2.7 (and underneath the hood, ONNX does a Pybind to their C++ libraries).

To understand PaddlePaddle's (non-)graph way of representing a deep learning program, a `ProgramDesc`, refer to: https://github.com/PaddlePaddle/Paddle/blob/develop/doc/fluid/design/concepts/program.md.

## Status

Targets Paddle->ONNX conversion for now, and will consequently support the reverse too.

Currently a work-in-progress tool since there a features in PaddlePaddle not supported in ONNX today and vice-versa.

## Usage

First, generate model directory by running any fluid test / example and write the model using the `fluid.io.save_inference_model` API.

Then, run `convert.py` by providing the generated model directory to the argument `---modeldir`.


## Installation

(TBD)

If you don't already have protobuf installed on your computer, install it from here: https://github.com/google/protobuf. On Mac, to get the development version, use `brew install protobuf`.

Create a virtual environment and install ONNX using PIP.
```
virtualenv venv
source venv/bin/activate
pip install -r requirements.txt
```

Build PaddlePaddle's `develop` branch from source using info here:
http://paddlepaddle.org/docs/develop/documentation/en/build_and_install/build_from_source_en.html. Make the `paddle/python` available in the execution environment's PYTHONPATH, or `pip install` the wheel after building the target `paddle_python`.

NOTE: Make sure your virtual environment has the new Protobuf used by this project and the `onnx` dependency, as Paddle installation may try to downgrade it.

## Testing

TBD

## Supported models

We aim to at least support all the models from our model bank. During our preliminary stage, we plan to support the models generated from:

- [fit_a_line](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/tests/book/test_fit_a_line.py)
- [machine_translation](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/tests/book/test_machine_translation.py)

## License
Provided under the [Apache-2.0 license](LICENSE).