README.md

Cadence DSP Backends

Supported DSPs (in progress)

• HiFi Audio
• Fusion G3
• Vision P-Series

Note: The Cadence DSP backends can only be compiled using the Xtensa toolchain (xt-clang cross-compiler). They cannot be built with standard host x86 compilers — the Xtensa toolchain is required for cross-compilation targeting any Cadence DSP family.

Neural Network Libraries (nnlib)

Each DSP family uses a dedicated nnlib with optimized primitives:

• HiFi: nnlib-hifi4
• Fusion G3: nnlib-FusionG3

Tutorial

Please follow the tutorial for more information on how to run models on Cadence/Xtensa DSPs.

Directory Structure

executorch
├── backends
│   └── cadence
│       ├── aot
│       ├── generic
│       ├── utils
│       ├── hifi
│       │   ├── kernels
│       │   ├── operators
│       │   └── third-party
│       │       └── nnlib          # from nnlib-hifi4
│       ├── fusion_g3
│       │   ├── kernels
│       │   ├── operators
│       │   └── third-party
│       │       └── nnlib          # from nnlib-FusionG3
│       └── vision
│           ├── kernels
│           ├── operators
│           └── third-party
└── examples
    └── cadence
        ├── models
        └── operators