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如何在24GB显存GPU上高效运行DeepCoder-14B并避免显存溢出?

2025-08-25 1.2 K

有限显存环境下的模型优化方案

针对24GB显存限制,推荐采用以下组合方案:

  • Quantitative loading: Usetorch_dtype=torch.float16maybeload_in_8bit=True参数减少显存占用
  • 分片策略: Settingsdevice_map="balanced"自动分配GPU/CPU资源,或手动指定max_memory={0:"24GiB"}
  • KV缓存优化: Enableuse_cache=True并限制max_length=32000平衡性能与显存
  • alternative:使用vLLM推理引擎(pip install vllm)实现PagedAttention,可降低显存峰值30%

实测数据显示,组合采用4bit量化+KV缓存时,24GB显存可稳定处理40K上下文。若仍遇OOM错误,可尝试no_split_module_classes=["GPTBlock"]参数来优化模型分片。

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