Loading weights from TorchVision will stop working

[datumbox]

Hi OpenMMLab team, Thanks for your awesome work on MMCV.

The current implementation of get_torchvision_models() is trying to access the model_urls variable that existed in some backbone implementations of TorchVision. TorchVision considers this variable non-public (because it's not included in the __all__) and non-standard (because it's not available in all models) and thus plans to remove it on the next version. We are currently moving on a new API that will allow us to support multiple pretrained weights for every model variant (read more here). This change has recently landed at TorchVision on pytorch/vision#5618.

To avoid breakages, we recommend to update your code. A few options include to:

1. Access the URLs from the new public locations
2. Move the the model_urls maps on your side
3. Something else, happy to work with you to figure it out

We intentionally released this change several months before the next release to give time to iron out issues like that. Let me know your thoughts on how we should go about it. Thanks!

[zhouzaida]

Hi @datumbox, thank you for your reminders and suggestions, we will modify the code accordingly.

[datumbox]

@zhouzaida Thanks a lot for the reply.

We have a dedicated issue for feedback about the new API at pytorch/vision#5088; if you find any issues we would love to know and act upon it. Also let me know if there is anything we can do on our side to help.

[zhouzaida]

Got it. We are trying to update our code.

[HAOCHENYE]

@datumbox Hi， will these features be released in torchvison 0.13.0? We try to handle these changes by checking the version of torchvision.

[datumbox]

@HAOCHENYE yes that's correct. Starting from 0.13, TorchVision will adopt the new API. The plan is for the old one to remain available for 2 versions (planned for removal on 0.15) but it will emit a warning if used. Let me know if you have any feedback or need more info. Thanks!

[zhouzaida]

Hi @datumbox , thanks for your awesome work on torchvision. We are trying to handle these changes and we want to know when will the new version v0.13 be released?

[datumbox]

@zhouzaida Apologies for the delay getting back to you. I was OOO.

We don't have a fixed date yet but we expect it to be around end of June or beginning of July.

[zhouzaida]

@zhouzaida Apologies for the delay getting back to you. I was OOO.

We don't have a fixed date yet but we expect it to be around end of June or beginning of July.

Got it. Thanks for your reply.