During June 2025, this developer refactored the OpenCL runtime in the alibaba/MNN repository, focusing on backend development and resource management using C++ and OpenCL. They replaced the existing OpenCL context with a global singleton, ensuring a single, consistent context across the application. To balance isolation and reuse, they introduced per-instance OpenCLRuntime objects, optimizing resource allocation and simplifying lifecycle management. This approach reduced initialization overhead and improved reliability for cross-module usage. The work demonstrated a thoughtful understanding of resource management challenges in complex systems, delivering a maintainable solution that enhances performance and consistency in OpenCL-based backend infrastructure.