Worked on the ROCm/xla repository to enhance the reliability of GPU collective operations by addressing instability introduced by a recent topology initialization change. Focused on stabilizing distributed GPU communication paths, the developer implemented a rollback of the topology and NcclIdStore initialization, which had caused test failures and flakiness in CI pipelines. Using C++ and leveraging expertise in build systems and GPU computing, the work restored a simpler, more stable setup for GPU collectives. This approach reduced the risk of regressions in production workflows and provided clear documentation to guide future changes, supporting safer feature development and consistent downstream team operations.