riscv/sail-riscv
Mar 2025 – Aug 2025
4 Months active
Languages Used
CMakeCC++JSONSailShell
Technical Skills
Build System ConfigurationBuild System ManagementEmbedded SystemsRISC-V ArchitectureSoftware Design PatternsSystem Configuration
Alasdair
PROFILE
Alasdair
Alasdair Armstrong developed and enhanced core infrastructure for the riscv/sail-riscv repository, focusing on build system configuration, modular specification management, and model correctness. Over four months, he introduced a unified JSON-based configuration system in C and CMake, replacing ad-hoc C stubs to streamline onboarding and reproducibility. He modularized Sail specification files using a new .sail_project structure, enabling explicit dependency management and simplifying builds. Alasdair also improved the Sail RISC-V model’s reliability by correcting exponential calculations for fractional LMUL values and adding stricter type safety options, applying formal verification and compiler development skills to support robust hardware verification workflows.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
4Total
Bugs
0
Commits
4
Features
4
Lines of code
1,443
Activity Months4
Your Network
41 people
Work History
August 2025
1 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Summary: Focused on correctness and safety in the Sail RISC-V model. Implemented correct exponential calculations for fractional LMUL values and added a new Sail option to enforce type-expression safety. These changes enhance model reliability for hardware verification and reduce risk of incorrect type handling in simulations.
1 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Summary: Focused on correctness and safety in the Sail RISC-V model. Implemented correct exponential calculations for fractional LMUL values and added a new Sail option to enforce type-expression safety. These changes enhance model reliability for hardware verification and reduce risk of incorrect type handling in simulations.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for riscv/sail-riscv focusing on delivering modular Sail specification system and groundwork for scalable module management.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for riscv/sail-riscv focusing on delivering modular Sail specification system and groundwork for scalable module management.
April 2025
1 Commits • 1 Features
Apr 1, 20252025-04 Monthly Summary: Delivered a unified Sail-native configuration system for riscv/sail-riscv that replaces ad-hoc C stubs with a JSON-based, centrally managed configuration. The system is driven by a single command-line argument and includes a default configuration file to simplify onboarding, improve reproducibility, and accelerate the addition of new configurable options. No major bugs were reported this month, and the changes reduce maintenance burden and set the stage for scalable configuration across future releases.
1 Commits • 1 Features
Apr 1, 20252025-04 Monthly Summary: Delivered a unified Sail-native configuration system for riscv/sail-riscv that replaces ad-hoc C stubs with a JSON-based, centrally managed configuration. The system is driven by a single command-line argument and includes a default configuration file to simplify onboarding, improve reproducibility, and accelerate the addition of new configurable options. No major bugs were reported this month, and the changes reduce maintenance burden and set the stage for scalable configuration across future releases.
April 2025
March 2025
1 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a targeted build-system clean-up for Sail release in riscv/sail-riscv. Removed the unused header sail_state.h from sail_runtime/CMakeLists.txt to simplify build configuration and reduce maintenance overhead as part of the planned Sail release. This change reduces potential include-related build issues, shortens CI build times, and improves release readiness. No user-reported defects were fixed this month; the focus was on release engineering and codebase hygiene. The work demonstrates proficiency in CMake-based build systems, version control discipline, and cross-repo collaboration to align with the Sail project delivery timeline, delivering business value through more reliable builds and cleaner project structure.
March 2025
1 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a targeted build-system clean-up for Sail release in riscv/sail-riscv. Removed the unused header sail_state.h from sail_runtime/CMakeLists.txt to simplify build configuration and reduce maintenance overhead as part of the planned Sail release. This change reduces potential include-related build issues, shortens CI build times, and improves release readiness. No user-reported defects were fixed this month; the focus was on release engineering and codebase hygiene. The work demonstrates proficiency in CMake-based build systems, version control discipline, and cross-repo collaboration to align with the Sail project delivery timeline, delivering business value through more reliable builds and cleaner project structure.
Activity
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Quality Metrics
Correctness97.6%
Maintainability92.6%
Architecture92.6%
Performance85.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++CMakeJSONSailShell
Technical Skills
Build System ConfigurationBuild System ManagementCompiler DevelopmentDomain-Specific Language (DSL) DevelopmentEmbedded SystemsFormal VerificationRISC-VRISC-V ArchitectureSoftware Design PatternsSystem ConfigurationSystem Design
Repositories Contributed To
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