add attention_sink.py #7119
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add attention_sink.py #7119
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Pull Request resolved: #6579 This PR adds `KVCacheWithAttentionSink`, which is required for `AttentionSink`. It keeps the first `sink_size` tokens as attention sinks and maintains a sliding window with `window_size` for new tokens. Note: I am trying to implement and verify `AttentionSink` in eager mode first. So the current implementation may still have some lower errors. Will leave these problems to resolve when we are ready to deploy `AttentionSink` to edge. ghstack-source-id: 255715047 @exported-using-ghexport Differential Revision: [D65235798](https://our.internmc.facebook.com/intern/diff/D65235798/)
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/7119
Note: Links to docs will display an error until the docs builds have been completed. ✅ No FailuresAs of commit 3905f19 with merge base c726a9b ( This comment was automatically generated by Dr. CI and updates every 15 minutes. |
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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: #6579
^ 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/helunwencser/70/base
ghstack PR head: https://github.com/pytorch/executorch/tree/gh/helunwencser/70/head
Merge bot PR base: https://github.com/pytorch/executorch/tree/main
Merge bot PR head: https://github.com/pytorch/executorch/tree/gh/helunwencser/70/orig
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