July 2025 focused on build stability and developer experience. No new user-facing features delivered. Major work consisted of stability and build hygiene improvements across two OpenXiangShan repos. Key outcomes include: (1) PDB naming conflict resolved in OpenXiangShan/difftest by prefixing pdb.mk variables with PDB_, reducing clashes with libso.mk (commit 485dc97aecc5eb213062bf25e1b0b841bd167e5b); (2) GSIM build stability improved by using GSIM_CXX instead of a global CXX, reducing potential compiler conflicts (commit f7d9ad26414789b15d5f18817e704409d3c74ded); (3) NEMU build noise reduced by suppressing noisy ccache-missing errors when ccache is not installed (commit 6c6bb7e99597ef4ba3ef583508ade86a219ac15c). These changes collectively improve CI predictability, shorten iteration cycles, and enhance developer experience.

May 2025 monthly highlights for OpenXiangShan/XiangShan and Mill work. Delivered containerized CI and architecture improvements to enhance developer productivity, build reproducibility, and system resilience. Key features delivered include a Docker CI image build and release workflow with PR checks; XiangShan docker build support (in-container generator jar, pull-image target, and disabled safe directory check); Move DTS ResourceBinding flow to BaseXSSoC; XSNoCTop trait-based modularization with core trait separation and LowPower integration. Major bugs fixed include docker image build reliability fixes (MILL_OUTPUT_DIR moved to tmpfs; forward variables in docker make command; fix for MAKEOVERRIDES containing spaces) and Git command robustness in Mill. Overall impact: faster, more reliable, and scalable builds with improved maintainability and architecture alignment. Technologies/skills demonstrated include Docker, GHCR, CI/CD pipelines, Mill build tool, and trait-based design patterns.

In April 2025, delivered foundational build and CI improvements for OpenXiangShan projects, with a focus on reproducible Docker-based builds, container-friendly test workflows, and build-system hygiene. Implemented environment isolation and artifact organization to support scalable development and CI integration across XiangShan and difftest, enabling faster onboarding and more reliable release pipelines.

February 2025 performance and reliability improvements across OpenXiangShan repositories (difftest, NEMU, XiangShan). Key features delivered include Difftest readability and timing refinements, an ELF loader bug fix that sorts program headers by physical address, and the exposure of a C-callable golden memory API to enable DMA co-simulation. Additional portability gains were achieved through Makefile updates to link dramsim3 using -L/-l, and privilege instruction handling improvements with targeted configuration changes for spike-diff workloads. These changes collectively improve testing fidelity, co-simulation interoperability, and cross-environment portability.

January 2025 monthly summary for OpenXiangShan repositories. Focused on delivering configurable build-time resource controls, improved logging/testability, and hardening reliability across the memory interface and config parsing. Highlights include feature delivery in difftest, bug fix in XiangShan AXI4Memory, and cross-version Java config robustness.

OpenXiangShan/XiangShan — December 2024 monthly summary: Focused on stabilizing the frontend cache pathway and improving correctness. Completed a critical bug fix that resolves a read-only asTypeOf warning and ensures proper WireInit initialization across the PageTableWalker and ITTag/Tag modules. No new user-facing features were released this month; all effort centered on reliability, maintainability, and reducing risk in the cache/frontend path. The change reduces runtime warnings, clarifies initialization semantics, and strengthens build-time consistency for future optimizations.

November 2024 monthly summary focusing on cross-repo build improvements, version clarity, and testing readiness. Delivered changes across Nanhu-V5 and XiangShan to improve artifact traceability, packaging reliability, and deployment confidence. Business value includes faster release cycles, easier debugging, and safer reproducibility of builds in production environments.

October 2024 performance summary for OpenXiangShan/XiangShan-doc: Delivered metadata enrichment and UI stability improvements to the documentation site, anchored by repository plugins and a material upgrade. These changes improved credibility, navigability, and maintainability of the documentation, while reducing risk of stale information and enhancing contributor traceability. No major bugs were reported this month; focus was on stable feature delivery and quality improvements.