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# MNN 性能优化专区
本目录汇总 MNN 在不同硬件 / 算子上的性能优化实现说明,作为 review、扩展与移植的参考。
## 索引
| 文档 | 内容 |
|------|------|
| [`arm_low_bit_gemm.md`](./arm_low_bit_gemm.md) | ARM CPU 低 bit (W2 / W3 / W4 / W8) GEMM kernel 数据排布与汇编优化 |
| [`gemm_speed_benchmark.md`](./gemm_speed_benchmark.md) | GEMM 性能基准测试(多后端、多精度、LLM 典型尺寸) |
| [`gemv_bw_benchmark.md`](./gemv_bw_benchmark.md) | GEMV 带宽 microbenchmark (LLM decode 带宽 rooflineCPU/Metalw8/w4/w3/w2) |
> 后续新增:LinearAttention CPU 优化、TurboQuant KV Cache、CUDA Blackwell sm_120 适配 等,欢迎按相同结构补充。