graph: pad the KV dimension of the no-cache attention to 256 ( #30416 )
The no-cache path builds a [n_tokens, n_tokens] mask and passes K and V
unpadded, so FLASH_ATTN_EXT sees K->ne[1] == n_tokens. The CUDA kernels
for head size 512 require a multiple of FATTN_KQ_STRIDE, so the op falls
back to the CPU for most lengths, and the -fa auto probe (1 token)
disables flash attention for such models.
Pad the mask like llama_kv_cache::get_n_kv and pad K and V with zeros up
to the KV dimension of the mask. clef builds its own causal mask and
pads it the same way.
Website:
https://llama.app
Attestations:
https://github.com/ggml-org/llama.cpp/attestations/55199687
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 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