Hugging Face ZeroGPU Rules and patterns for ML demos on Hugging Face Spaces with ZeroGPU hardware. Covers , duration and quota tuning, process isolation, the CUDA availability model, concurrency safety, and CUDA build constraints. Scope This skill is for Gradio SDK Spaces using ZeroGPU hardware . Docker and Static Spaces cannot schedule onto ZeroGPU, and Streamlit apps now run as Docker Spaces — so this skill applies only to Gradio. For general Gradio coding (components, layouts, event listeners), see the skill in this repo. The authoritative ZeroGPU docs live at https://huggingface.co/docs/h…