---
library_name: kernels
license: apache-2.0
---

This is the repository card of kernels-community-rs/flash-attn2-rs 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-rs/flash-attn2-rs", version=1)
fwd_kvcache = kernel_module.fwd_kvcache

fwd_kvcache(...)
```

## Available functions
- `fwd_kvcache`
- `flash_attn_with_kvcache`
- `fwd`
- `bwd`
- `varlen_fwd`
- `varlen_bwd`
- `fwd_explicit`
- `reserve_rng_state`
- `flash_attn_func`
- `flash_attn_qkvpacked_func`
- `flash_attn_kvpacked_func`
- `flash_attn_varlen_func`
- `flash_attn_varlen_qkvpacked_func`
- `flash_attn_varlen_kvpacked_func`

## Benchmarks

Benchmarking script is available for this kernel. Run `kernels benchmark kernels-community-rs/flash-attn2-rs --version 1`.