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<!-- AUTO-GENERATED by export-skills.py — DO NOT EDIT -->
---
name: flash-attention
description: FlashAttention IO-aware exact attention algorithm. Use when optimizing transformer inference and training speed with memory-efficient attention.
tags: [flash-attention, optimization, quantization]
---

# Flash Attention - Fast Memory-Efficient Attention

## Quick start

Flash Attention provides 2-4x speedup and 10-20x memory reduction for transformer attention through IO-aware tiling and recomputation.

**PyTorch native (easiest, PyTorch 2.2+)**:
```python
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