b10632

ggml-metal: add chunked SSD MMA for Mamba-2 prefill optimization (#26647)

• metal: WIP chunked SSD SSM_SCAN kernels for multi-token prefill

• metal: drop scalar SSD path; MMA + sequential tail

• drop WIP ssm scan test noise

• remove state_from_dst and rename CS and NSG constants

• remove unrelated added whitespace padding

• added clarity to mma_tokens calculation

• added clarity to use_mma bool checks

• added comments to metal ssd op constants for clarity

• reserve K tokens for sequential kernel rollback snapshots

• reset concurrency between mma and seq tail

• remove print args no longer used

• fixed comment to no longer point to specific line

• add FC_SSM_SCAN so seq path skips token offlset unless it's mma tail

• added changes to new ssm.metal for rebase after ggml-metal.metal refactor

• specialize ssm_scan tail with a template instead of a function constant

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Co-authored-by: dpantaleoni dominikpantaleoni@gmail.com
Co-authored-by: forforever73 690105611@qq.com

Website:

• https://llama.app

Attestations:

• https://github.com/ggml-org/llama.cpp/attestations/43085130

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