[Bug] turn off flash attention in the process of finetune, because of npus

[BrenchCC]

Checklist

• 1. I have searched related issues but cannot get the expected help.
• 2. The bug has not been fixed in the latest version.
• 3. Please note that if the bug-related issue you submitted lacks corresponding environment info and a minimal reproducible demo, it will be challenging for us to reproduce and resolve the issue, reducing the likelihood of receiving feedback.

Describe the bug

如何在微调过程中关闭flash attention，npu不支持

Reproduction

1

Environment

8*910b2

Error traceback

No response