Set default value to unet config sample size

[echarlaix]

Set default value for model without any config such as tiny-random-OnnxStableDiffusionPipeline. If no configuration provided, the default height and width value will be 512

[HuggingFaceDocBuilderDev]

The documentation is not available anymore as the PR was closed or merged.

[fxmarty]

This seem different compared to diffusers that uses height = height or self.unet.config.sample_size * self.vae_scale_factor? Should we just add the relevant config to the tiny model?

[echarlaix]

This seem different compared to diffusers that uses height = height or self.unet.config.sample_size * self.vae_scale_factor? Should we just add the relevant config to the tiny model?

This will break compatibility with models that have been exported to ONNX using diffusers or optimum<=v1.9.1 (we will no longer be able to perform inference with these models)

[fxmarty]

Shouldn't this fix be in diffusers?

[echarlaix]

Shouldn't this fix be in diffusers?

I'm talking about models that have already been exported such as https://huggingface.co/axodoxian/stable_diffusion_onnx or https://huggingface.co/sayakpaul/onnx-stable-diffusion-v1-5

[fxmarty]

LGTM

[echarlaix]

Merging as failing tests are unrelated