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linkedin / Liger-Kernel Public

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Add vLLM importance sampling ratio support for GRPO loss#1088

Merged

Tcc0403 merged 5 commits intolinkedin:mainlinkedin/Liger-Kernel:mainfrom

yukiu00:feat/add-vllm-is-ratio-grpo-lossyukiu00/Liger-Kernel:feat/add-vllm-is-ratio-grpo-lossCopy head branch name to clipboard

Feb 9, 2026

Conversation Commits5 (5)Checks Files changed

Merged

Add vLLM importance sampling ratio support for GRPO loss#1088
Tcc0403 merged 5 commits intolinkedin:mainfrom
yukiu00:feat/add-vllm-is-ratio-grpo-loss

Commits

Commits on Feb 9, 2026

Add vLLM importance sampling ratio support for GRPO loss (#1082)
yukiu00
committed
Support (B, 1) per-sequence shape for vllm_is_ratio
yukiu00
committed
Update docstrings to reflect (B, 1) shape support for vllm_is_ratio
yukiu00
committed
Add shape validation and 1D (B,) support for vllm_is_ratio
yukiu00
committed
Refactor vllm_is_ratio tests to avoid combinatorial explosion
yukiu00
committed

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