b11206

hexagon: support for backend sampler (#29502)

• hex-topk: trying to improve/cleanup the pipeline

• hex-sampling: add STEP op

• hex-sampler: add SUM op

• hex-sampler: update CPY to support sampling cases

• hex-binary: add support for chunking to handle large logits

• hex-argmax: super basic version of ARGMAX

• hex-binary: support for scalars in extended buffers

• hex-binary: fix wrong indexing for dim 1 broadcasts across dim 2 slices

• hex-argsort: fix missing header

• hex-sampler: cleanup dma usage in the sampler related ops, and binary

• hex-build: disable autovectorizer, it is better to use explicit hints for critical loops

• hex-binary: fix perf regression due to is_1d fallback

• hex-ops: update supported ops

Website:

• https://llama.app

Attestations:

• https://github.com/ggml-org/llama.cpp/attestations/50501794

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 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 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