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chore: upgrade transformers 4.55.0#8823

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zhyncs merged 2 commits intomainfrom
zhyncs/transformers
Aug 5, 2025
Merged

chore: upgrade transformers 4.55.0#8823
zhyncs merged 2 commits intomainfrom
zhyncs/transformers

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@zhyncs zhyncs commented Aug 5, 2025

Motivation

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@zhyncs zhyncs requested a review from merrymercy as a code owner August 5, 2025 17:02
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Summary of Changes

Hello @zhyncs, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

I've updated the project's dependencies by upgrading the "transformers" library to its latest version, 4.55.0. This is a routine maintenance update to ensure compatibility and leverage any improvements or bug fixes in the newer version of the library.

Highlights

  • Dependency Upgrade: The "transformers" library has been upgraded from version 4.54.1 to 4.55.0 within the "python/pyproject.toml" file.
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Code Review

This pull request upgrades the transformers library from version 4.54.1 to 4.55.0. While this is a minor version bump, I've identified a potential risk. The codebase uses a private attribute from the transformers library, which is not guaranteed to be stable across versions. This could lead to unexpected breakages. I've added a comment highlighting this specific risk.

Comment thread python/pyproject.toml
"scipy",
"torchao==0.9.0",
"transformers==4.54.1",
"transformers==4.55.0",
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high

This upgrade could introduce breaking changes because our TransformersForCausalLM implementation relies on internal, non-public APIs of the transformers library. Specifically, python/sglang/srt/models/transformers.py uses self.model._tp_plan, which is a private attribute and can be changed or removed without notice in new versions. This poses a significant maintainability and correctness risk, as it could break tensor parallelism support. It would be safer to find a public API to get this information or add extensive tests covering this functionality to catch potential breakages from this and future upgrades.

@zhyncs zhyncs merged commit 901ab75 into main Aug 5, 2025
58 of 64 checks passed
@zhyncs zhyncs deleted the zhyncs/transformers branch August 5, 2025 18:37
narutolhy pushed a commit to narutolhy/sglang that referenced this pull request Aug 17, 2025
Co-authored-by: hebiao064 <hebiaobuaa@gmail.com>
MahmoudAshraf97 pushed a commit to MahmoudAshraf97/sglang that referenced this pull request Sep 8, 2025
Co-authored-by: hebiao064 <hebiaobuaa@gmail.com>
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2 participants