Refactor attention v2 #10707
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Refactor attention v2 #10707
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Pull Request resolved: #10623 Pull attention creation out of Transformer/TransformerBlock. Instead, pass the layers into Transformer. The motivation is to customize linear layers in attention for LoRA (eg. make wq into a LoraLinear instead of a regular linear). In the next diff (D73517350), we pull wq,wk,wv,wo out of the attention and pass those in as well. This allows us to customize attention parameters without passing in ModelArgs and doing the customization deep inside attention.py. I think this modularizes our attention/transformer components, though also means that users have to do some more work to construct the attention layers and pass it to transformer. It follows the torchtune structure more closely, eg. https://github.com/pytorch/torchtune/blob/main/torchtune/models/llama3_2/_component_builders.py#L221 Previously here: D73474110 ghstack-source-id: 282118266 @exported-using-ghexport Differential Revision: [D73538697](https://our.internmc.facebook.com/intern/diff/D73538697/)
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10707
Note: Links to docs will display an error until the docs builds have been completed. ❗ 1 Active SEVsThere are 1 currently active SEVs. If your PR is affected, please view them below: ❌ 1 New FailureAs of commit 7e997a4 with merge base 4129ebe ( NEW FAILURE - The following job has failed:
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This PR was created by the merge bot to help merge the original PR into the main branch.
ghstack PR number: #10623 by @lucylq
^ Please use this as the source of truth for the PR details, comments, and reviews
ghstack PR base: https://github.com/pytorch/executorch/tree/gh/lucylq/74/base
ghstack PR head: https://github.com/pytorch/executorch/tree/gh/lucylq/74/head
Merge bot PR base: https://github.com/pytorch/executorch/tree/main
Merge bot PR head: https://github.com/pytorch/executorch/tree/gh/lucylq/74/orig
@diff-train-skip-merge