Model Releases
b10181
ggml-cuda : disable MMQ on devices with less than 48 KiB shared memory (#26141) ggml_cuda_should_use_mmq() selects MMQ purely from the quantization type. The current MMQ configurations are designed an
ggml-cuda : disable MMQ on devices with less than 48 KiB shared memory (#26141) ggml_cuda_should_use_mmq() selects MMQ purely from the quantization type. The current MMQ configurations are designed and maintained against a minimum of 48 KiB per-block shared memory, the limit provided by NVIDIA Pascal GPUs and later. On devices that report less, no supported MMQ tile fits and mul_mat_q_switch_J() aborts when every tile size exceeds the device's per-block shared memory budget. Disable MMQ when smpbo < 48 KiB so the caller falls back to the BLAS path instead of hitting GGML_ABORT. Some current MUSA QY1 devices report only 28 KiB and are covered by this guard. Reproduced on a Moore Threads MTT S70 (arch mp_21, 28 KiB shared memory per block) with an RWKV-7 0.1B Q8_0 model: $ llama-bench -m rwkv7-g1d-0.1b-Q8_0.gguf -p 128 -n 0 J_best=0 ggml/src/ggml-cuda/template-instances/../mmq.cuh:1521: fatal error (core dumped) Only prefill (batch > 1) is affected; token generation is fine. After the fix the same device falls back to the BLAS path: Q8_0 pp128 1470.7 t/s, tg8 55.3 t/s (was: abort) FP16 unchanged Q4_K_M unchanged This matches a -DGGML_CUDA_FORCE_CUBLAS=ON build (pp128 1464.2 t/s), which confirms the fallback path is the one being taken. This is not MUSA-specific: any device with less than 48 KiB per-block shared memory is affected. Co-authored-by: KakaruHayate KakaruHayate@users.noreply.github.com Website: https://llama.app 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 7.2) 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 x64 (Vulkan) Windows x64 (OpenVINO) Windows x64 (SYCL) Windows x64 (HIP) openEuler: DISABLED openEuler x86 (310p) openEuler x86 (910b, ACL Graph) openEuler aarch64 (310p) openEuler aarch64 (910b, ACL Graph) UI: UI
Source: llama.cpp Releases | 2026-07-29