AutoModel.from_pretrained without accelerate raises a NameError because `init_empty_weights` is not available

[LoicGrobol]

d1b92369ca193 introduced a call to init_empty_weights that leads to an error if accelerate is not installed. This should be guarded by a condition that accelerate is available (one already guards the import, but not the actual call).

[chn-lee-yumi]

same, this problem is introduced in 4.50.3->4.51.0

[samuelan]

downgrade to transformers=4.49.0 solved my problem

[LoicGrobol]

@samuelan installing accelerate is a better solution imo but still, that's a bug.

[ArthurZucker]

Yep accelerate should be installed, we will fix that ASAP sorry all !

[vladiliescu]

This hurts especially in inference-only cases. I'm using sentence-transformers (pinned version) to compute embeddings, and this morning my builds started failing for no good reason. We have no need to install accelerate, and I'm not referencing transformers directly.

But, simply instantiating a SentenceTransformer calls the magic line, and everything fails.