b10675

Vulkan: add hoisting support for row IDs and expert count in shaders (#26686)

• vulkan: add hoisting support for row IDs and expert count in shaders

• use hoisted row ids in coopmat2

• vulkan: address review feedback on count_experts

• use vk_op_count_experts_push_constants instead of a raw uint vector
• apply the fastdiv trick to the ne00 div/mod in count_experts
• compute the per-expert offsets with subgroupExclusiveAdd when the
  device supports it, keeping the serial path as fallback
• document the data_d layout and the hoisted_row_id_words bound
• drop a leftover debug print in ggml_vk_matmul_id

• vulkan: use init_pushconst_fastdiv for count_experts push constants

• vulkan: refine comments for row ID hoisting and data layout in count_experts shader

• Whitespace

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Co-authored-by: Jeff Bolz jbolz@nvidia.com

Website:

• https://llama.app

Attestations:

• https://github.com/ggml-org/llama.cpp/attestations/43695822

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 (ROCm 7.14)
• Ubuntu x64 (OpenVINO)
• Ubuntu x64 (SYCL FP32)
• Ubuntu x64 (SYCL FP16)

Android:

• Android arm64 (CPU)

Windows:

• Windows x64 (CPU)
• Windows arm64 (CPU)
• Windows arm64 (OpenCL Adreno)
• Windows x64 (CUDA 12) - CUDA 12.4 DLLs
• Windows x64 (CUDA 13) - CUDA 13.3 DLLs
• Windows arm64 (CUDA 13) (preview) - CUDA 13.4 DLLs
• Windows x64 (Vulkan)
• Windows x64 (OpenVINO)
• Windows x64 (SYCL)
• Windows x64 (ROCm 7.14)

openEuler:

• DISABLED
• openEuler x86 (310p)
• openEuler x86 (910b, ACL Graph)
• openEuler aarch64 (310p)
• openEuler aarch64 (910b, ACL Graph)

UI:

• UI