modelscope / modelscope/ms-swift

为什么微调qwen3.5-9B模型后FP8量化vllm部署,和不量化的模型的输出差距非常大,感觉训练的内容遗忘很多

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Dominant language
Python
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Description

Checklist / 检查清单
  • I have searched existing issues, and this is a new question or discussion topic. / 我已经搜索过现有的 issues,确认这是一个新的问题与讨论。
Question Description / 问题描述

微调的内容遗忘很多,之前qwen3-8B的时候fp8量化都比较正常,至少训练的内容例如一些输出json格式能力还是基本ok的,量化qwen3.5-9B模型后根据不按照格式输出

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First steps

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Research direction

The report names no repository files, tests, or entry points. Start by collecting the fine-tuning configuration, FP8 quantization command, vLLM deployment command, and comparable outputs for the unquantized model; done means determining whether the difference is expected, reproducible, or requires a documented fix.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
machine-learning
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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