During March 2025, Daniel Sang worked on the facebookresearch/param repository, focusing on improving the reliability of execution trace analysis in multi-process and multi-threaded environments. He addressed a critical bug by updating the mapping logic for process IDs, thread IDs, and node IDs, ensuring consistent index integrity across profiling runs. Leveraging his expertise in Python development, code analysis, and debugging, Daniel replaced the deprecated root thread identifier with PyTorch profiler thread annotations for thread tracking. This technical approach reduced trace misalignment and enhanced the accuracy of performance debugging, laying a solid foundation for robust trace analytics in future workloads.