FMS Acceleration for Attention And Distributed Packing Plugin

This library contains plugins to accelerate finetuning with the following optimizations:

1. Padding-Free Flash Attention Computation
2. Multipack Distributed Sampling

Plugins

Native Transformers Support from v4.44.0

Transformers natively supports padding-free from v4.44.0 see here. The padding-free plugin will use the transformers library if compatible, otherwise if transformers < v4.44.0 the plugin will use an internal implementation instead.

Native TRL Support for PaddingFree with DataCollatorForCompletionOnlyLM from v0.10.1

Users will be able to use PaddingFree with untokenized data from TRL >= v0.10.1. The flattening of inputs and addition of position_ids to the batch is carried out inside DataCollatorForCompletionOnlyLM when keyword padding_free is passed to the collator. The plugin uses the TRL library if compatible, otherwise if trl < v0.10.1 the plugin will use an internal implementation instead.

If a user still passes in a pretokenized dataset, the plugin will still use DataCollaterForFlattening in the collate_fn.

Running Benchmarks

To reproduce the benchmarks, simply run the following commands,

Reproduce Padding Free on A100 80GB tox -e run-benches -- "1 2" "4 8" benchmark_outputs scenarios-orca.yaml "none"

Reproduce MultiPack on A100 80GB tox -e run-benches -- "2 4 8" "16 32 64" benchmark_outputs scenarios-orca.yaml "padding-free"

Known Issues

Currenly Only Supports Multipack with Padding-Free

The multipack plugin currently also requires the padding-free plugin to work. This may change in the future if there is demand for multipack to work standalone without padding free.