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Fixes #291

included when building docker locally.
(Where the local dirs might have the flash-attention folder.)


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Fixes # (issue)


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closes #273

closes #268

This PR starts the minimal possible amount of explanation I could think
of. It tries to explain how dynamic batching occurs, the interactions
with past key values and ignores the padding problem.

Maybe some drawings could help too but I kept it to text for now.

remaining_decode_tokens was calculated twice in Seq2SeqLMBatch.filter()

Introduced in #214 

Fixes #249

Co-authored-by: OlivierDehaene <23298448+OlivierDehaene@users.noreply.github.com>
Co-authored-by: OlivierDehaene <olivier@huggingface.co>

Hopefully it's cleaner

Co-authored-by: Nick Hill <nickhill@us.ibm.com>

@njhill fyi