Worked on the triton-lang/triton repository to enhance the robustness of the autotuner in CPU-only environments. Addressed a critical runtime error by introducing a default do_bench value, ensuring the autotuner operates reliably when no GPU is detected. Expanded the unit test suite to verify correct behavior along the CPU execution path and to guard against future regressions. Focused on backend development and performance optimization using Python, with an emphasis on thorough testing practices. Delivered a targeted fix that improved CPU path reliability and test coverage, demonstrating attention to detail and a methodical approach to maintaining cross-platform compatibility within the codebase.