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* hexagon: add conv2d op * hex-conv2d: add double-buffered staging * hex-conv2d: full 64-wide activation block transpose straight from staged buffer * hex-conv2d: implicit gemm * hex-conv2d: remove scalar path and kernel * hex-conv2d: unify conv2d kernel params for all paths * hex-conv2d: scale HMX result before f16 storage and then restore during unpacking to prevent overflow * hex-conv2d: fix f16 overflow in HMX paths * hex-conv2d: refactor to rebase to new op fusion machinery * hex-conv2d: restructure DMA pipelines and trace scopes * hex-conv2d: removed the HVX_WIDTH and HVX_TILED paths * hex-conv2d: remove in-loop vector spills * hex-conv2d: refactor kparams, vtcm-layout and dma-pipeline to match the other ops * hex-conv2d: add basic support for CONV_2D_DW Co-Authored-By: Pranav Dhinakar <pdhinaka@qti.qualcomm.com> * hex-conv_2d_dw: use DMA in all paths * hex-conv_2d_dw: support for chunking larger inputs * hex-conv_2d_dw: remove scalar/hvx access for w tensor (replaced with sync dma copy) * hex-conv-2d: fix warnings * hex-conv2d-dw: vectorize all paths * hex-conv-2d-dw: tree-based reductions and unrolling to optimize * hex-conv-2d-dw: uninline compute loops from dma loops * hex-conv-2d-dw: move all kernel selection into the host solver and simplify/specialize kernel dispatch * hex-softmax: update obsolete gates to enable SOFT_MAX for mmproj --------- Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com> Co-authored-by: Pranav Dhinakar <pdhinaka@qti.qualcomm.com>
llama.cpp
LLM inference in C/C++
ggml / ops / maintainer PRs / dev stats / lib llama API / llama-server REST API
Quick start
A few options to get llama.cpp installed on your machine:
# curl
curl -LsSf https://llama.app/install.sh | sh
# powershell
irm https://llama.app/install.ps1 | iex
- Visit https://llama.app and follow the instructions
- Run with Docker - see our Docker documentation
- Download pre-built binaries from the releases page
- Build from source by cloning this repository - check out our build guide
Once installed:
# Download and run a model directly from Hugging Face
llama cli -hf ggml-org/Qwen3.5-0.8B-GGUF
# Launch OpenAI-compatible API server
llama serve -hf ggml-org/Qwen3.5-0.8B-GGUF
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Description
The main goal of llama.cpp is to enable LLM (and VLM) inference with minimal setup and state-of-the-art performance on
a wide range of hardware - locally and in the cloud.
- Plain C/C++ implementation without any dependencies
- Apple silicon is a first-class citizen - optimized via ARM NEON, Accelerate and Metal frameworks
- AVX, AVX2, AVX512 and AMX support for x86 architectures
- RVV, ZVFH, ZFH, ZICBOP and ZIHINTPAUSE support for RISC-V architectures
- 1.5-bit, 2-bit, 3-bit, 4-bit, 5-bit, 6-bit, and 8-bit integer quantization for faster inference and reduced memory use
- Custom CUDA kernels for running LLMs on NVIDIA GPUs (support for AMD GPUs via HIP and Moore Threads GPUs via MUSA)
- Vulkan and SYCL backend support
- CPU+GPU hybrid inference to partially accelerate models larger than the total VRAM capacity
The llama.cpp project is build on top of the ggml library.
Supported backends
| Backend | Target devices |
|---|---|
| BLAS | All |
| BLIS | All |
| CANN | Ascend NPU |
| CUDA | Nvidia GPU |
| HIP | AMD GPU |
| Hexagon | Snapdragon |
| IBM zDNN | IBM Z & LinuxONE |
| MUSA | Moore Threads GPU |
| Metal | Apple Silicon |
| OpenCL | Adreno GPU |
| OpenVINO [In Progress] | Intel CPUs, GPUs, and NPUs |
| RPC | All |
| SYCL | Intel GPU |
| VirtGPU | VirtGPU APIR |
| Vulkan | GPU |
| WebGPU | All |
| ZenDNN | AMD CPU |
Documentation
Tools
Development
- How to build
- Running on Docker
- Build on Android
- Multi-GPU usage
- Performance troubleshooting
- GGML tips & tricks
- XCFramework
- Completions
- Models
- Release process
Contributing
- Contributors can open PRs
- Collaborators will be invited based on contributions
- Maintainers can push to branches in the
llama.cpprepo and merge PRs into themasterbranch - Any help with managing issues, PRs and projects is very appreciated!
- Read the CONTRIBUTING.md for more information
Acknowledgements
- yhirose/cpp-httplib - Single-header HTTP server, used by
llama-server- MIT license - nothings/stb - Single-header image format decoder, used by multimodal subsystem - Public domain
- nlohmann/json - Single-header JSON library, used by various tools/examples - MIT License
- mackron/miniaudio - Single-header audio format decoder, used by multimodal subsystem - Public domain
- sheredom/subprocess.h - Single-header process launching solution for C and C++ - Public domain