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fix fp8 multi gpu; update FQA

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Azure 2025-02-25 10:52:29 +00:00
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@ -92,4 +92,8 @@ Traceback (most recent call last):
next_token = torch.multinomial(probs, num_samples=1).squeeze(1)
RuntimeError: probability tensor contains either `inf`, `nan` or element < 0
```
**SOLUTION**: The issue of running ktransformers on Ubuntu 22.04 is caused by the current system's g++ version being too old, and the pre-defined macros do not include avx_bf16. We have tested and confirmed that it works on g++ 11.4 in Ubuntu 22.04.
**SOLUTION**: The issue of running ktransformers on Ubuntu 22.04 is caused by the current system's g++ version being too old, and the pre-defined macros do not include avx_bf16. We have tested and confirmed that it works on g++ 11.4 in Ubuntu 22.04.
### Q: Using fp8 prefill very slow.
The FP8 kernel is build by JIT, so the first run will be slow. The subsequent runs will be faster.