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library_name: kernels
license: apache-2.0
---
> [!CAUTION]
> Starting from September 13, 2026, we will be removing the "model" type repositories of kernels (e.g., kernels-community/flash-attn3). Make sure you're using a latest version of kernels. If you face any disruption, please report them here: https://github.com/huggingface/kernels/issues/new.
This is the repository card of kernels-community/vllm-flash-attn3 that has been pushed on the Hub. It was built to be used with the [`kernels` library](https://github.com/huggingface/kernels). This card was automatically generated.
## How to use
```python
# make sure `kernels` is installed: `pip install -U kernels`
from kernels import get_kernel
kernel_module = get_kernel("kernels-community/vllm-flash-attn3", version=1)
flash_attn_combine = kernel_module.flash_attn_combine
flash_attn_combine(...)
```
## Available functions
- `flash_attn_combine`
- `flash_attn_func`
- `flash_attn_qkvpacked_func`
- `flash_attn_varlen_func`
- `flash_attn_with_kvcache`
- `get_scheduler_metadata`
## Benchmarks
Benchmarking script is available for this kernel. Run `kernels benchmark kernels-community/vllm-flash-attn3 --version 1`.
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