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llama.cpp b10899 adds Vulkan optimizations for Qwen and split_k support

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The llama.cpp project released version b10899, introducing specific performance improvements to its Vulkan backend. The update focuses on optimizing matrix operations for the Qwen model family and enhancing general small M performance.

Optimizes m=1 mul_mat by swapping A/B matrices in Vulkan.
Improves performance for small M dimensions.
Enables split_k support with small M values.
Adjusts small vs. medium tile selection for coopmat2 to depend on M rather than just N.

These changes aim to improve inference efficiency on Vulkan-compatible hardware, particularly for models like Qwen that benefit from the specified matrix optimizations.

Importance 1/3 Trust 1/3 llama.cpp Inference efficiency Local inference

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github llama.cpp · 3h ago · 1 view

llama.cpp b10896 fixes DFlash decoding failure with vision models

The llama.cpp project released build b10896, which addresses a critical issue where the drafter memory failed to allocate new tokens when using DFlash with vision models. This failure occurred because images reported a fixed offset, preventing proper token allocation.

github llama.cpp · 2d ago · 2 views

llama.cpp disables lazy tensor loading by default on iGPUs

The llama.cpp project has disabled lazy tensor loading by default for integrated GPUs (iGPUs) in release b10867. This change addresses a regression introduced in the previous "AUTO" lazy mode setting.

github llama.cpp · 2d ago · 4 views

llama.cpp b10864 fixes checkpoint eviction for hybrid models

The llama.cpp project released build b10864, which includes a fix for the checkpoint spacing eviction logic in `create_checkpoint()`. Previously, the eviction rule kept the oldest checkpoint and erased later ones within `checkpoint_min_step`, causing prompts shorter than that threshold to drop the checkpoint needed for resumption. This forced hybrid and recurrent models to unnecessarily re-prefill from the previous checkpoint.

github llama.cpp · 3d ago · 6 views

llama.cpp b10844 adds Vulkan DeepSeek-V4 hyper-connection fused ops

The llama.cpp project released version b10844, introducing support for DeepSeek-V4 hyper-connection fused operations (DSV4_HC_COMB/PRE/POST) in the Vulkan backend. This update brings Vulkan to parity with CUDA and Metal regarding these specific optimizations.

github llama.cpp · 3d ago · 6 views

llama.cpp b10842 adds gfx90c HIP support

The llama.cpp project released build b10842, which introduces support for the gfx90c architecture via HIP.