[llm] Support different shape of input_pos#11869
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For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/11869
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For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) ghstack-source-id: 292265667 Pull Request resolved: #11869
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
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Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292466463 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
larryliu0820
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Jun 24, 2025
Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292469061 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
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For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
larryliu0820
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Jun 25, 2025
Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292517675 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
larryliu0820
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Jun 25, 2025
Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292523573 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
larryliu0820
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Jun 25, 2025
Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292529628 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
Contributor
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
larryliu0820
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Jun 25, 2025
Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292529864 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
Contributor
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
larryliu0820
added a commit
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Jun 25, 2025
Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292546578 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
Contributor
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This pull request was exported from Phabricator. Differential Revision: D77203700 |
For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/) [ghstack-poisoned]
larryliu0820
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Jun 25, 2025
Pull Request resolved: #11869 For huggingface models, `forward()` is taking `tokens` as well as `cache_positions`, which is a list of cache indices. This is different than the .pte files `export_llama` gives, which are taking `tokens` and `input_pos` where `input_pos` is a scalar tensor. This PR adds support inside `text_decoder_runner.cpp` to handle both shapes of `input_pos`/`cache_positions`. To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in `input_pos` or `cache_position`. ghstack-source-id: 292560636 @exported-using-ghexport Differential Revision: [D77203700](https://our.internmc.facebook.com/intern/diff/D77203700/)
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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: #11869 by @larryliu0820 ^ 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/larryliu0820/67/base ghstack PR head: https://github.com/pytorch/executorch/tree/gh/larryliu0820/67/head Merge bot PR base: https://github.com/pytorch/executorch/tree/gh/larryliu0820/66/orig Merge bot PR head: https://github.com/pytorch/executorch/tree/gh/larryliu0820/67/orig @diff-train-skip-merge --------- Co-authored-by: Mengwei Liu <larryliu@meta.com> Co-authored-by: Mengwei Liu <larryliu0820@users.noreply.github.com>
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Stack from ghstack (oldest at bottom):
For huggingface models,
forward()is takingtokensas well ascache_positions, which is a list of cache indices. This is different than the .pte filesexport_llamagives, which are takingtokensandinput_poswhereinput_posis a scalar tensor.This PR adds support inside
text_decoder_runner.cppto handle both shapes ofinput_pos/cache_positions.To make the logic more generic without relying on extra metadata, here I'm adding the logic of inspecting method meta and input tensor info, to make a decision if we want to feed in
input_posorcache_position.Differential Revision: D77203700