OpenXiangShan/XiangShan
Aug 2025 – Jan 2026
3 Months active
Languages Used
Scala
Technical Skills
ChiselFPGA designFPGA developmentScalabackend developmentdigital logic design
YuanDL
PROFILE
Yuandl
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
10Total
Bugs
3
Commits
10
Features
6
Lines of code
2,327
Activity Months3
Your Network
53 people
Work History
January 2026
3 Commits • 2 Features
Jan 1, 2026January 2026 Monthly Summary for OpenXiangShan/XiangShan focusing on memory subsystem improvements and branch predictor performance. Delivered three key items that improved throughput, correctness under concurrency, and predictive accuracy, with measurable business value in system stability and performance under high-write workloads.
3 Commits • 2 Features
Jan 1, 2026January 2026 Monthly Summary for OpenXiangShan/XiangShan focusing on memory subsystem improvements and branch predictor performance. Delivered three key items that improved throughput, correctness under concurrency, and predictive accuracy, with measurable business value in system stability and performance under high-write workloads.
January 2026
September 2025
2 Commits • 1 Features
Sep 1, 2025OpenXiangShan/XiangShan — Sep 2025: Delivered XiangShan Ahead BTB PLRU Replacement Policy and State Generator, introducing a PLRU-based cache replacement and refactoring for readability. Fixed MainBtbReplacer ReplacerState count error, added licensing URL for PlruStateGen, and removed unused imports. These changes improve BTB cache efficiency, reliability, and code maintainability; enhanced documentation and licensing compliance. Technologies involved include PLRU algorithm, cache policy design, code refactoring, and licensing/documentation practices. Business value: faster, more predictable BTB behavior, reduced technical debt, and easier future enhancements. Key achievements include: - Delivered XiangShan Ahead BTB PLRU Replacement Policy and State Generator (commit 81209cd45a540b7b2cc6154d5269b35932e9e27f). - Fixed MainBtbReplacer ReplacerState count bug (commit 9e2f98996e8d05bab99b0d45add13acaf614893f). - Code hygiene and licensing improvements for PLRU components. - Improved BTB cache replacement performance and reliability, with better maintainability.
September 2025
2 Commits • 1 Features
Sep 1, 2025OpenXiangShan/XiangShan — Sep 2025: Delivered XiangShan Ahead BTB PLRU Replacement Policy and State Generator, introducing a PLRU-based cache replacement and refactoring for readability. Fixed MainBtbReplacer ReplacerState count error, added licensing URL for PlruStateGen, and removed unused imports. These changes improve BTB cache efficiency, reliability, and code maintainability; enhanced documentation and licensing compliance. Technologies involved include PLRU algorithm, cache policy design, code refactoring, and licensing/documentation practices. Business value: faster, more predictable BTB behavior, reduced technical debt, and easier future enhancements. Key achievements include: - Delivered XiangShan Ahead BTB PLRU Replacement Policy and State Generator (commit 81209cd45a540b7b2cc6154d5269b35932e9e27f). - Fixed MainBtbReplacer ReplacerState count bug (commit 9e2f98996e8d05bab99b0d45add13acaf614893f). - Code hygiene and licensing improvements for PLRU components. - Improved BTB cache replacement performance and reliability, with better maintainability.
August 2025
5 Commits • 3 Features
Aug 1, 2025OpenXiangShan/XiangShan — August 2025 monthly summary. Key achievements include delivering a multi-port WriteBuffer with SWMR configuration to improve SRAM entry handling and efficiency; integrating a PLRU-based MBTB replacement with modular state generation and frontend extraction to boost cache performance; fixing speculative update pointer logic and PHR update mechanism with a golden-reference validation approach to ensure correctness; and minor but important code quality improvements (formatting consistency) that improve readability and maintainability. These changes collectively increase memory subsystem throughput, reduce cache misses, and improve correctness of speculative execution, delivering tangible business value.
5 Commits • 3 Features
Aug 1, 2025OpenXiangShan/XiangShan — August 2025 monthly summary. Key achievements include delivering a multi-port WriteBuffer with SWMR configuration to improve SRAM entry handling and efficiency; integrating a PLRU-based MBTB replacement with modular state generation and frontend extraction to boost cache performance; fixing speculative update pointer logic and PHR update mechanism with a golden-reference validation approach to ensure correctness; and minor but important code quality improvements (formatting consistency) that improve readability and maintainability. These changes collectively increase memory subsystem throughput, reduce cache misses, and improve correctness of speculative execution, delivering tangible business value.
August 2025
Activity
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Quality Metrics
Correctness88.0%
Maintainability82.0%
Architecture86.0%
Performance82.0%
AI Usage30.0%
Skills & Technologies
Programming Languages
Scala
Technical Skills
ChiselFPGA designFPGA developmentScalabackend developmentbranch predictiondigital designdigital logic designfront end developmenthardware design
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