ggml

ef336850 - sync : llama.cpp (training, refactoring) (#548)

sync : llama.cpp (training, refactoring) (#548) * sync : llama.cpp (training, refactoring) * examples : fix ggml_rope * ggml : better optimizer cancel handling ggml-ci * ggml : fix UBs ggml-ci * ggml : add TODO for refactoring the opt cancellation