During December 2025, Haim Badihi focused on stabilizing CUDA performance measurements within the openucx/ucx repository. He addressed a bug affecting the accuracy of performance benchmarks by ensuring that counter resets occurred correctly between warmup and benchmark phases. His solution involved adjusting the message size calculation to account for additional signal size, thereby improving the reliability of performance data. Working primarily with C++ and CUDA, Haim localized his changes to the performance testing path, maintaining clear traceability through a dedicated commit. His work demonstrated a targeted approach to performance testing, emphasizing accuracy and maintainability in CUDA benchmarking workflows.