Month: 2026-01 Concise monthly summary focused on business value, technical achievements, and cross-repo collaboration. 1) Key features delivered - Stability and reliability enhancements across verification and build infrastructure. - No new user-facing features, but substantial improvements to test stability and build reliability that enable faster, more reliable verification cycles. 2) Major bugs fixed - Simulation Deadlock: Fixed a deadlock in long-running SV simulations by flushing the expectation queue when the depth threshold is exceeded, stabilizing extensive testing and reducing stalled CI runs. (Commit: 9c5d84940e8b99b2f66538718aaa32907ab68002) - Build Path Resolution: Updated build configuration to locate circt.json via moduleDir, reducing nested-build errors and improving path resolution. (Commit: 2ed17f6193e0f96e72a526dd9e0f2c76797d4f8b) - MinimalConfig Address Handling: Hardened address handling by introducing fullAddressBits parameter set to 48 in MinimalConfig cache configuration, improving stability in verification runs (CoreMark iterations) and reducing misconfig issues. (Commit: 65edd6b2aa6d93f60d9a32a55aa656549c497363) 3) Overall impact and accomplishments - Significantly improved testing stability and throughput by eliminating a long-standing simulation deadlock, leading to more reliable automated verification and faster feedback loops. - Reduced CI and build-time failures by ensuring robust path resolution for nested builds, accelerating onboarding of contributors and faster release cycles. - Enhanced hardware verification stability with explicit address width configuration, contributing to more consistent verilog generation and verification results. - Demonstrated cross-repo collaboration across chipsalliance/chisel and OpenXiangShan/XiangShan, with clear, signed-off changes that align with project-wide quality standards. 4) Technologies/skills demonstrated - Debugging and stabilizing long-running simulations (svsim) under heavy test workloads. - Build system hardening and config management, including moduleDir-based path discovery. - Hardware parameterization and configuration hardening (MinimalConfig, fullAddressBits) for robust verification (CoreMark). - Cross-repo collaboration, code signing practices, and CI-readiness improvements.

May 2025 monthly summary focusing on key business value and technical achievements for OpenXiangShan/XiangShan.