OpenXiangShan/XiangShan
Sep 2025 – Dec 2025
2 Months active
Languages Used
Scala
Technical Skills
Scalabackend developmentcache optimizationhardware designFPGAdigital design
tianxin
PROFILE
Tianxin
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
2
Lines of code
201
Activity Months2
Your Network
54 peopleSame Organization
@iie.ac.cn1
Work History
December 2025
1 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — concise monthly summary for OpenXiangShan/XiangShan. Delivered a major bitmap cache performance upgrade by migrating from a register-based to SRAM-based architecture, introducing a new bitmap cache entry structure, and updating cache handling to exploit SRAM characteristics. Implemented in commit 9cc79e33ec1a22f8dbf8c41f74326f38ddd42ccb. Business value: lowers bitmap cache latency, increases throughput, and improves memory bandwidth utilization, enabling higher sustained rendering compute performance. Technologies demonstrated: low-level cache design, memory hierarchy optimization, and careful change management.
1 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — concise monthly summary for OpenXiangShan/XiangShan. Delivered a major bitmap cache performance upgrade by migrating from a register-based to SRAM-based architecture, introducing a new bitmap cache entry structure, and updating cache handling to exploit SRAM characteristics. Implemented in commit 9cc79e33ec1a22f8dbf8c41f74326f38ddd42ccb. Business value: lowers bitmap cache latency, increases throughput, and improves memory bandwidth utilization, enabling higher sustained rendering compute performance. Technologies demonstrated: low-level cache design, memory hierarchy optimization, and careful change management.
December 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025Concise monthly summary for 2025-09 focusing on OpenXiangShan/XiangShan. The primary deliverable is a cache optimization patch for BitmapCache and l0BitmapReg, introducing a two-stage lookup for cache hits and a dedicated stage to update l0BitmapReg. The change reduces cache latency and improves memory management, contributing to higher data throughput and more predictable performance for memory-heavy workloads.
September 2025
1 Commits • 1 Features
Sep 1, 2025Concise monthly summary for 2025-09 focusing on OpenXiangShan/XiangShan. The primary deliverable is a cache optimization patch for BitmapCache and l0BitmapReg, introducing a two-stage lookup for cache hits and a dedicated stage to update l0BitmapReg. The change reduces cache latency and improves memory management, contributing to higher data throughput and more predictable performance for memory-heavy workloads.
Activity
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Quality Metrics
Correctness80.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage30.0%
Skills & Technologies
Programming Languages
Scala
Technical Skills
FPGAScalabackend developmentcache optimizationdigital designhardware design
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