* Extend MultiPackBatchSampler test to include shorter sequence length and drop long sequences filter
* Fix get_dataset_lengths for datasets that were previously filtered (e.g., with drop_long_seq_in_dataset)
* Update src/axolotl/utils/samplers/utils.py
Fix get_dataset_lengths for datasets that do not have position_ids or length attributes
Co-authored-by: NanoCode012 <kevinvong@rocketmail.com>
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Co-authored-by: NanoCode012 <kevinvong@rocketmail.com>
* Switch to parallel FFD bin packing algorithm.
Add support for packing in a distributed context.
Add packing efficiency estimate back.
* revert changes to distributed code
* chore: lint
* fix config w new params for packing test
* add sample_packing_group_size and sample_packing_bin_size to cfg schema
* fix lamdbda function
* fix sampler/dataloader calculations for packing
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Co-authored-by: dsesclei <dave@sescleifer.com>
* support for true batches with multipack
* patch the map dataset fetcher to handle batches with packed indexes
* patch 4d mask creation for sdp attention
* better handling for BetterTransformer
* patch general case for 4d mask
* setup forward patch. WIP
* fix patch file
* support for multipack w/o flash attention for llama
* cleanup
* add warning about bf16 vs fp16 for multipack with sdpa
* bugfixes
* add 4d multipack tests, refactor patches
* update tests and add warnings
* fix e2e file check
* skip sdpa test if not at least torch 2.1.1, update docs
