transformers

af496d74 - Make it possible to evaluate when using sequence parallel in HF Trainer (#43517)

Make it possible to evaluate when using sequence parallel in HF Trainer (#43517) * Add SPEvalCallBack integration for enhanced evaluation during training * revert original * rm add SPEvalCallBack * eval when testing alst ulysses using an odd shaped seq --------- Co-authored-by: Kashif Rasul <kashif.rasul@gmail.com> Co-authored-by: Marc Sun <57196510+SunMarc@users.noreply.github.com>