The ggml-org/llama.cpp b11868 release changes how Hexagon handles multicore HMX flash attention. It replaces the separate `FA_HEAD_SPLIT` and `FA_SPLIT` settings with one flag, `GGML_HEXAGON_FA_SPLIT`.
With the flag set to 1, work can be split across KV heads and, when there are fewer KV heads than cores, across teams so otherwise idle cores can participate. The release gives Gemma 4 with two KV heads on four cores as an example.
Why it matters
For people running llama.cpp on Hexagon hardware, the change is intended to let cores participate when a model has fewer KV heads than cores; the release notes do not quantify any speedup.
