Developed an in-place pause mode for the scheduler in the ping1jing2/sglang repository, enabling generation processes to be paused without altering the scheduler’s internal state. This feature addressed reliability concerns during pause scenarios by ensuring state preservation and seamless resumption. The implementation involved Python development with a focus on scheduler management and robust unit testing. Comprehensive tests were added to validate the in-place pause functionality and confirm that it did not interfere with concurrent scheduler operations. Additionally, a targeted fix was applied to handle edge-case behavior, further enhancing the reliability and correctness of the scheduler’s pause and resume capabilities.