代码跑着跑着就挂了，CUDA out of memory

[susht3]

🐛 bug 说明

finetune中途突然OOM，是不是需要限制输入长度呢，请问代码内部会做截断么？目前输入长度没有做限制

torch.cuda.OutOfMemoryError: CUDA out of memory. Tried to allocate 96.00 MiB (GPU 0; 31.74 GiB total capacity; 27.71 GiB already allocated; 91.12 MiB free; 31.22 GiB reserved in total by PyTorch) If reserved memory is >> allocated memory try setting max_split_size_mb to avoid fragmentation. See documentation for Memory Management and PYTORCH_CUDA_ALLOC_CONF

Python Version

None

[wangyuxinwhy]

内部是会做截断的，但 uniem 依然是动态申请内存的，所以如果数据中出现一个文本很长的样本，就有可能出现中途 OOM。可以考虑减少 batch_size，或者手动平衡文本长度。