llama.cpp

52fb93a2 - server : free draft/MTP resources on sleep to fix VRAM leak (#23461)

server : free draft/MTP resources on sleep to fix VRAM leak (#23461) The destroy() function in server_context_impl only cleaned up the main model and context (via llama_init.reset()) but did not free the speculative decoder (spec), draft context (ctx_dft), or draft model (model_dft). For MTP (Multi-Token Prediction) models, ctx_dft holds GPU-allocated resources (KV cache, compute buffers) that are not freed when entering the sleeping state. On each sleep/resume cycle, new resources are allocated without the old ones being freed, leading to a VRAM leak that eventually crashes the server with out-of-memory errors. Fix by explicitly resetting spec, ctx_dft, and model_dft in destroy() before resetting llama_init, ensuring proper cleanup order to avoid use-after-free. ref: https://github.com/ggml-org/llama.cpp/issues/23395 Assisted-by: llama.cpp:local pi