ggml-org/llama.cpp b11878 is a new build of the repository that performs LLM inference in C/C++. The GitHub release, published on October 25, 2026, contains a CUDA optimization that merges the Qwen model's position embedding rotation operation and row assignment into a single operation. The source of the change is the b11878 release of ggml-org/llama.cpp. Binaries for macOS, Linux, and Android were uploaded as well.
This change was not presented as a general explanation targeting every model or execution path, but as a CUDA optimization that combines two operations of the Qwen model. Rather than merely listing the position embedding rotation operation and row assignment separately, the two processes were bundled into one, and that is the core of the release. The repository itself is a C/C++-based LLM inference project, and binaries are provided for macOS, Linux, and Android. Therefore, the new items confirmed in the release summary are the CUDA optimization for that model and the delivery of binaries for those three platforms.
However, the provided release information contains no performance measurements or verification conditions. How much of a speed difference the optimization actually produces cannot be judged from this information alone. The described scope of the change should also be read as limited to CUDA processing for the Qwen model, and there is no basis for assuming that the same change was applied to other models or other execution paths. b11878 can be viewed as an implementation change within the stated scope, but the magnitude of its effect cannot be known without separate measurement.