Replace einops.rearrange with torch native #2
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Description
According to lllyasviel/stable-diffusion-webui-forge#716 (comment),
einops.rearrangecalls in crossattn is causing extra overhead. Replacing it with torch native ops can save ~55ms/it.Screenshots/videos:
TODO
There are other places where
einops.rearrangecan be replaced by torch native ops, but this one in CrossAttn is the most critical one. Instrument the usage ofeinops.rearrangeelsewhere might also yield some improvements.Checklist: