OpenXiangShan/GEM5
Mar 2025 – Jun 2025
3 Months active
Languages Used
C++PythonYAMLShell
Technical Skills
Branch PredictionCI/CDCPU SimulationGitHub ActionsPerformance AnalysisSystem Configuration
Xu Boran
PROFILE
Xu Boran
During three months contributing to OpenXiangShan/GEM5, Xuboran Xu enhanced the simulator’s branch prediction and performance analysis infrastructure. He refined the TAGE branch predictor by aligning start addresses and integrating a Path History Register, addressing subtle accuracy and history-order issues. Xu also introduced a Finite State Machine to clarify the BPU tick cycle’s control flow, improving maintainability without altering core behavior. To streamline benchmarking, he unified CI workflows and automated weekly performance testing using GitHub Actions and shell scripting. Working primarily in C++ and Python, Xu’s contributions deepened the project’s low-level systems capabilities and enabled more reproducible, efficient performance validation.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
6Total
Bugs
0
Commits
6
Features
5
Lines of code
342
Activity Months3
Your Network
26 people
Work History
June 2025
3 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for OpenXiangShan/GEM5 focused on strengthening the branch-prediction stack and improving the control-flow clarity of the BPU. Delivered two major features with precise fixes and clean refactors, enabling higher accuracy and easier future maintenance while preserving core behavior.
3 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for OpenXiangShan/GEM5 focused on strengthening the branch-prediction stack and improving the control-flow clarity of the BPU. Delivered two major features with precise fixes and clean refactors, enabling higher accuracy and easier future maintenance while preserving core behavior.
June 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 — OpenXiangShan/GEM5: Delivered a Weekly Performance Testing Workflow and Unified CI Template. Consolidated CI workflows for spec06 and spec17 benchmarks across coverage levels into a single template; added a weekly test workflow file and updated configs to support new benchmark types and configurations. This work enables consistent weekly performance validation, improves visibility, and reduces maintenance overhead. Commit 4e450bc8225694e1fc9392f3d955e59dd4ae7c54: 'add weekly ci, with 1.0 coverage, run on thursday night (#401)'.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 — OpenXiangShan/GEM5: Delivered a Weekly Performance Testing Workflow and Unified CI Template. Consolidated CI workflows for spec06 and spec17 benchmarks across coverage levels into a single template; added a weekly test workflow file and updated configs to support new benchmark types and configurations. This work enables consistent weekly performance validation, improves visibility, and reduces maintenance overhead. Commit 4e450bc8225694e1fc9392f3d955e59dd4ae7c54: 'add weekly ci, with 1.0 coverage, run on thursday night (#401)'.
March 2025
2 Commits • 2 Features
Mar 1, 2025March 2025: Delivered performance analysis enhancements for GEM5 and streamlined performance data delivery via CI artifacts, enabling faster optimization cycles and reproducible benchmarking for OpenXiangShan/GEM5.
2 Commits • 2 Features
Mar 1, 2025March 2025: Delivered performance analysis enhancements for GEM5 and streamlined performance data delivery via CI artifacts, enabling faster optimization cycles and reproducible benchmarking for OpenXiangShan/GEM5.
March 2025
Activity
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Quality Metrics
Correctness83.4%
Maintainability83.4%
Architecture86.6%
Performance76.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++PythonShellYAML
Technical Skills
Branch PredictionCI/CDCPU ArchitectureCPU SimulationComputer ArchitectureGitHub ActionsLow-Level SystemsPerformance AnalysisPerformance TestingShell ScriptingSimulationSystem Configuration
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