[tests/TF/build] enable missing classification onnx tests and set tensorflow lower bound to 2.11

[felixT2K]

This PR:

• upgrades the minor version of tf2onnx to >=1.14 (which supports TF 2.11)
• upgrades the minor version of tensorflow to >= 2.11 (first version where the issue seems to be fixed)
• enables tests

Closes:
#978 and #790 🚀

[codecov]

Codecov Report

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unittests	95.01% <ø> (ø)

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[felixdittrich92]

@frgfm Are you fine with increasing the minimum versions to fix this ? I think it would be also the time to drop py3.6 and 3.7 support and focus on 3.9 and 3.10 (especially CI) with >=3.8,<4

[odulcy-mindee]

@felixdittrich92 Should it fix:

tensorflow.python.framework.errors_impl.InvalidArgumentError: {{function_node __wrapped__Conv2DBackpropInput_device_/job:localhost/replica:0/task:0/device:CPU:0}} Gradients for grouped convolutions are not supported on CPU. Please file a feature request if you run into this issue. Computed input depth 576 doesn't match filter input depth 1 [Op:Conv2DBackpropInput]

?

[felixT2K]

@felixdittrich92 Should it fix:

tensorflow.python.framework.errors_impl.InvalidArgumentError: {{function_node __wrapped__Conv2DBackpropInput_device_/job:localhost/replica:0/task:0/device:CPU:0}} Gradients for grouped convolutions are not supported on CPU. Please file a feature request if you run into this issue. Computed input depth 576 doesn't match filter input depth 1 [Op:Conv2DBackpropInput]

?

@odulcy-mindee
Unfortunately no, the problem should actually be fixed since TF 2.9. I also tested it locally and it persists. However, only during training on the CPU (should normally not the case 😅 ). Training on the GPU and inference on the CPU and GPU runs without any problems.

Ref.: https://discuss.tensorflow.org/t/error-message-for-grouped-convolution-backprop-on-cpu-is-uninformative/6323

But this PR fixes the failing onnx exports for TF mobilenet. After this we have finally all models available for exporting into onnx format (up to the logits)

The idea to drop py3.6 and py3.7 support is only to keep the repo + CI tests up to date

[felixT2K]

@odulcy-mindee fine with the changes in this PR ? I opened #1183 for the grouped conv issue 👍🏼

[frgfm]

@frgfm Are you fine with increasing the minimum versions to fix this ? I think it would be also the time to drop py3.6 and 3.7 support and focus on 3.9 and 3.10 (especially CI) with >=3.8,<4

Regarding the version specifiers, yes that's alright but for future debugging purposes, I suggest updating the PR description to specify which new features we want to get out of those recent releases (easier to track down problems in a specific version later on).

About the python version, let me open a quick PR to check that (Python version upgrade can sometimes be tricky when the project on large platform-specific builds like DL frameworks) 👍

[frgfm]

Thanks again! Only a few suggestions for later debugging 👌