Misc. bug: OpenVINO GPU code paths are silently disabled on GPU.N machines, causing wrong results and performance drops

在多 GPU 机器上使用 llama.cpp 的 OpenVINO 后端时,如果 OpenVINO 把设备枚举为 GPU.0、GPU.1 这种带编号的名字,后端内部大量与字符串 "GPU" 的精确比较会失配,导致设备回退 CPU、部分算子没有按限制路由、KV cache 留在主机、GQN 快速 at


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