Pre-release / continuous build: this is an experimental build, not a stable release.
[SYCL] add DPAS flash attention kernel for quantized KV cache (#31125) * sycl : add DPAS flash attention kernel for quantized KV cache Decode and small batches (1 to 31 query tokens) now run flash attention straight on q4_0 and q8_0 KV blocks, instead of scalar dequant or converting the whole cache to f16 per call. Q.K uses s8 x s4 and s8 x s8 DPAS on XMX, V.P stays f16. dpas.s4.s8 is inline vISA since joint_matrix has no s4. Covers head sizes 64 to 512, GQA up to 32 and attention sinks. Prompts stay on the existing kernels. GGML_SYCL_FA_DPAS=0 turns it off. B580, Llama 3.1 8B Q4_K_M, q4_0 KV, tg128: 31.3 to 54.2 t/s at 16K context. FLASH_ATTN_EXT 4582/4584, same 2 failures as master. Assisted-by: Claude * sycl : 192 head dropped, Wildcat Lake added to docs Assisted-by: Claude * sycl : stricter checks from review Assisted-by: Claude * [SYCL] : rename XMX macro, add GGML_SYCL_SUPPORT_XMX option, document DPAS Assisted-by: ClaudeWebsite: - https://llama.app
Attestations: - https://github.com/ggml-org/llama.cpp/attestations/61175196
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