metal : faster MXFP4 mat-vec, full threadgroups for unary/binary/GLU ( #31075 )
metal : faster MXFP4 mat-vec kernel
Decode the fp4 values with the fp16 bit trick instead of a threadgroup lookup table, and load the packed nibbles as aligned 32-bit words. The kernel no longer uses threadgroup memory.
metal : launch contiguous unary and binary ops with full threadgroups
The contiguous unary path and the row-broadcast binary path used one thread per threadgroup. Use up to 256 threads per threadgroup and bound-check the tail.
metal : split GLU rows across threadgroups
A GLU row ran on one threadgroup, so single-row decode used a single threadgroup for the whole op. Split each row over threadgroups of up to 256 threads.
Website:
https://llama.app
Attestations:
https://github.com/ggml-org/llama.cpp/attestations/61399679
macOS/iOS:
macOS Apple Silicon (arm64)
macOS Apple Silicon (arm64, KleidiAI enabled) DISABLED
macOS Intel (x64)
iOS XCFramework
Linux:
Ubuntu x64 (CPU)
Ubuntu arm64 (CPU)
Ubuntu s390x (CPU)
Ubuntu 26.04 s390x (CPU)
Ubuntu 26.04 s390x (zDNN)
Ubuntu x64 (Vulkan)
Ubuntu arm64 (Vulkan)
Ubuntu x64 (CUDA 12) - CUDA 12.8 libraries
Ubuntu x64 (CUDA 13) - CUDA 13.4 libraries
Ubuntu arm64 (CUDA 13) - CUDA 13.4 libraries
Ubuntu x64 (ROCm 10.0)
Ubuntu x64 (OpenVINO)
Ubuntu x64 (SYCL FP32)
Ubuntu x64 (SYCL FP16)
Linux arm64 (Snapdragon: CPU, Adreno GPU, Hexagon NPU) - setup guide
Android:
Android arm64 (CPU)
Android arm64 (Snapdragon: CPU, Adreno GPU, Hexagon NPU) - setup guide
Windows:
Windows x64 (CPU)
Windows arm64 (CPU)
Windows arm64 (OpenCL Adreno)
Windows x64 (CUDA 12) - CUDA 12.4 DLLs
Windows x64 (CUDA 13) - CUDA 13.4 DLLs
Windows arm64 (CUDA 13) - CUDA 13.4 DLLs
Windows x64 (Vulkan)
Windows arm64 (Vulkan)
Windows x64 (OpenVINO)
Windows x64 (SYCL)
Windows x64 (ROCm 10.0)
openEuler:
DISABLED
openEuler x86 (310p)
openEuler x86 (910b, ACL Graph)
openEuler aarch64 (310p)
openEuler aarch64 (910b, ACL Graph)
UI:
UI