modelscope / modelscope/ms-swift

qwen3-vl-8b部署后使用--infer_backend vllm加速推理后内存消耗增加很多

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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

使用--infer_backend vllm加速推理后,在推理时内存迅速增长,请求并发度8时vllm消耗的内存达到了60-70GB,请问这符合预期么?

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Research direction

Start by reproducing the qwen3-vl-8b deployment with --infer_backend vllm at concurrency 8, while measuring memory growth during inference. Determine whether the reported 60–70 GB usage is expected, then document the finding or identify the relevant cause and resolution.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
machine-learning, performance
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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