During June 2025, David Wu developed the ProxyTrace feature for the ROCm/rccl repository, focusing on enhancing debugging and reliability for distributed systems. He implemented ProxyTrace in C and C++, integrating it with existing proxy logic to monitor send and receive operations. The feature stores a bounded set of active proxy events in host memory, enabling targeted status dumps during crashes or hangs while minimizing memory growth and debugging noise. By leveraging system programming and performance monitoring skills, David’s work aimed to reduce the mean time to diagnose proxy-related issues and improve the stability of communication paths between system components.