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cuda: GET_ROWS quants (#25962) cuda: add k-quant support to GET_ROWS Device-side embedding lookups require GET_ROWS to handle the k-quants used by common GGUF recipes (Q4_K_M stores token_embd as q6_K). Without it the backend rejects the op and the scheduler falls back to the host, copying the full embedding matrix back on every token in single-device graphs. Factor the super-block dequantizers out of the dequantize_block kernels in convert.cu into shared device functions in dequantize.cuh and reuse them from a new k_get_rows_kq kernel : one thread block dequantizes one (dst row, super-block) pair with the existing thread layouts, 32 threads for q4_K and 64 for the other k-quants. Covers q2_K to q6_K in get_rows_cuda and supports_op. i-quants are left as a TODO. cuda: add i-quant support to GET_ROWS Extends the shared super-block dequantizers to the nine i-quants and reuses them from k_get_rows_kq with the 32-thread layout of the matching convert.cu kernels. supports_op gates the k-quant and i-quant path on ne0 being a multiple of QK_K, which iq4_nl does not guarantee on its own (QK4_NL sub-blocks). mxfp4 is left as a TODO. cuda: add mxfp4 support to GET_ROWS Moves the mxfp4 dequantizer into the shared super-block helpers and reuses it from k_get_rows_kq with the 32-thread layout of the matching convert.cu kernel. mxfp4 joins the ne0 % QK_K gate in supports_op since its 32-value sub-blocks do not guarantee QK_K-aligned rows on their own. This closes GET_ROWS type coverage on CUDA: every quantized GGML type now takes the direct device path. cuda: gate the GET_ROWS row size only for 32-value sub-block types Address review from @pwilkin: the i-quant commit replaced the return shared by the whole supported type cascade, so f16/f32/bf16/i32 and the legacy quants also inherited the ne0 % QK_K == 0 gate and any row size that is not a multiple of 256 fell back to the scheduler. Split the cascade: unconditional support is restored everywhere, the gate stays only on iq4_nl and mxfp4 whose 32-value sub-blocks do not guarantee the QK_K super-blocks the kernel iterates on. 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 | 2026-07-22