Worked on the pytorch/pytorch repository to address a critical bug in Inductor’s tiling logic for GPU workloads. Focused on Python-based performance optimization, the developer restricted reduction tiling to a maximum of two iteration ranges for three-dimensional reductions, preventing kernel execution errors that previously arose when max_tiles was set to three or more. The solution included adding targeted tests to validate tiling behavior and introducing runtime assertions to enforce correct configuration, thereby reducing the risk of silent misconfigurations. This work stabilized the Inductor tiling path, ensuring more reliable production performance and future-proofing the codebase against similar issues.