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fix rotary embedding rotary_dim not equal head_size case #245

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merged 1 commit into from
Sep 13, 2024

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jikunshang
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FILL IN THE PR DESCRIPTION HERE

for model(like chatglm2/3-6b) whose rotary_dim not equal to head_size, current code will crash due to dim not equal.
#212 have a not robust enough fix. chatglm series could work, but chatglm2-6b result is not correct.
this fix follow vllm rotary_embeding pytorch native impl. verified on chatglm2-6b and chatglm3-6b

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@xuechendi
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xuechendi commented Sep 6, 2024

verified on chatglm, gpt-j and gpt-neox

This PR successfully fixed habana_main failing issue.

image

@xuechendi
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@kzawora-intel , please take a review; This PR will fix Chat-glm, gpt-j and gpt-neox failing issue.
The modification is referred from vllm-upstream:
https://github.com/vllm-project/vllm/blob/main/vllm/model_executor/layers/rotary_embedding.py#L136-L148

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lgtm

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3 participants