Hao Song worked on the ROCm/ROCm repository, focusing on improving the reliability of automated testing for the rocPRIM component. He re-enabled the device_merge_inplace unit test within the continuous integration pipeline by updating YAML-based CI/CD configurations, ensuring this test ran consistently as part of automated regression checks. By removing the test from extra parameters and validating its integration, Hao enhanced the coverage and feedback loop for developers, reducing the risk of undetected failures. His work demonstrated practical skills in CI/CD and testing, with a targeted approach that addressed a specific gap in the ROCm/ROCm test automation process.