Conv2d_transpose requires asymmetric padding which the CUDA EP currently does not support
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 43/100
- Issue type
- Bug
- Clarity
- Mostly clear
- Activity status
- Quiet
- Domain
- backend, machine-learning
Research direction
Start with ConvTranspose handling in the CUDA execution provider and compare the reported SAME-padding case with the tensorflow-onnx test referenced in the issue, which covers VALID padding. Check the supported-operators documentation and the linked asymmetric-padding change for expected behavior. Done means the reported model runs with asymmetric padding without the unsupported-operation warning.
Written by the indexing model from the issue text.
Description
Describe the bug
After successfully converting a tensorflow frozen graph(.pb) into a .oonx model, I encountered a warning while inferring the onnx model with onnxruntime-gpu in python.
The warning says conv2d_transpose op is not supported because it requires asymmetric padding which the CUDA EP currently does not support.
But it's strange that I found ConvTranspose is in Supported ONNX Operators and it seems the asymmetric padding issue is already solved.
System information
- OS Platform and Distribution:Linux Ubuntu 20.04
- ONNX Runtime installed from:
pip install onnxruntime-gpu - ONNX Runtime version: 1.10.0
- Python version: 3.6
- CUDA/cuDNN version: 11.3/8.2.1
- Tensorflow Version: 1.15
- opset: 13
Expected behavior
conv2d_transpose has been supported.
Screenshots

Additional context
I found tf.nn.conv2d_transpose has been tested in tensorflow-onnx with padding="VALID",while I use padding="SAME".
https://github.com/onnx/tensorflow-onnx/blob/f64772ce166ea2a0402524d9741b2fb71e5663df/tests/test_backend.py#L579-L590
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- C++
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