During January 2025, delivered critical fixes and robustness improvements across OpenXiangShan/YunSuan and OpenXiangShan/XiangShan. The work prioritized compiler correctness, reliability, and maintainability, ensuring solid foundations for upcoming features and performance-sensitive workflows. Key engineering efforts included targeted bug fixes that unblock builds and improve correctness, along with strategic dependency upgrades to stabilize upstream integrations while preserving functional behavior.

December 2024 monthly summary for OpenXiangShan/XiangShan focusing on backend and EXU area pipelining optimizations, timing improvements, and a broad set of bug fixes that improved throughput, timing determinism, and reliability. Delivered a coordinated set of features and fixes with precise commit-level traceability across the core pipeline, including register file reconfiguration to enable higher parallelism and more robust dispatch/FP paths.

November 2024: OpenXiangShan/XiangShan backend modernization and VfScheduler optimization. Key changes include a backend overhaul to improve dispatch, memory handling, and pipeline efficiency; consolidation of memory pools; and targeted resource reductions to shrink area. Iterative tuning of VfScheduler/VFEX3 yielded throughput gains, followed by a rollback after validation to ensure correctness. Overall, these changes delivered higher throughput, lower latency, and a smaller hardware footprint, with strong emphasis on performance-per-watt and scalability.