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ik_llama.cpp/github-data/issues/217 - Bug_ CPU FA with fp16 K-cache is broken.md
2025-07-23 13:31:53 +02:00

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### 🐛 [#217](https://github.com/ikawrakow/ik_llama.cpp/issues/217) - Bug: CPU FA with fp16 K-cache is broken
| **Author** | `ikawrakow` |
| :--- | :--- |
| **State** | ❌ **Closed** |
| **Created** | 2025-02-21 |
| **Updated** | 2025-02-22 |
---
#### Description
### What happened?
Running HellaSwag with flash attention enabled and using `fp16` for K-cache produces much lower scores than no FA or FA using `Q8_0` or `bf16` for K-cache.
### Name and Version
Latest
### What operating system are you seeing the problem on?
_No response_
### Relevant log output
```shell
```