Purdue-SoCET/RISCVBusiness
Sep 2024 – Apr 2026
9 Months active
Languages Used
SystemVerilogAssemblyC++ShellCMarkdownPythonYAML
Technical Skills
SystemVerilogdigital designhardware designAssembly LanguageBus InterfaceBus Interfaces
Devin Singh
PROFILE
Devin Singh
Worked on the Purdue-SoCET/RISCVBusiness repository, delivering features and fixes across cache coherence, multicore infrastructure, and hardware-software interface reliability. Developed and refactored SystemVerilog modules for L1 cache, bus controllers, and multicore wrappers, focusing on robust error handling, interrupt stability, and performance monitoring. Enhanced CI/CD pipelines using GitHub Actions and improved code quality through Verible linting and static analysis. Addressed simulation reliability in Xcelium and streamlined configuration management with YAML and Python. The work emphasized maintainability, test coverage, and deterministic behavior, supporting scalable multicore RISC-V designs and ensuring reliable operation across hardware and verification environments.
Overall Statistics
Feature vs Bugs
56%Features
Repository Contributions
28Total
Bugs
8
Commits
28
Features
10
Lines of code
67,051
Activity Months9
Your Network
5 peopleShared Repositories
5
Work History
April 2026
1 Commits
Apr 1, 2026April 2026: Delivered a critical fix to the Multicore Wrapper in Purdue-SoCET/RISCVBusiness to correct WFI signal indexing and define the halt signal as an output. This ensures proper operation for the targeted hardware thread (HART_ID) and improves multicore reliability across configurations. The change aligns wake/sleep sequencing with hardware expectations, reducing edge-case failures and supporting more deterministic behavior in production.
1 Commits
Apr 1, 2026April 2026: Delivered a critical fix to the Multicore Wrapper in Purdue-SoCET/RISCVBusiness to correct WFI signal indexing and define the halt signal as an output. This ensures proper operation for the targeted hardware thread (HART_ID) and improves multicore reliability across configurations. The change aligns wake/sleep sequencing with hardware expectations, reducing edge-case failures and supporting more deterministic behavior in production.
April 2026
March 2026
2 Commits • 1 Features
Mar 1, 2026March 2026: Delivered targeted Xcelium simulation reliability fixes and enhanced multicore interrupt handling for Purdue-SoCET/RISCVBusiness, improving test stability, CI throughput, and overall reliability of the RISCV pipeline. Key changes include zeroing out troublesome variables, disabling sv32 in caches, and preventing multidriven signals in proc_gen_bus_if to fix Xcelium stability; and connecting the wait-for-interrupt (WFI) signal to the top-level WFI for better multicore wrapper responsiveness.
March 2026
2 Commits • 1 Features
Mar 1, 2026March 2026: Delivered targeted Xcelium simulation reliability fixes and enhanced multicore interrupt handling for Purdue-SoCET/RISCVBusiness, improving test stability, CI throughput, and overall reliability of the RISCV pipeline. Key changes include zeroing out troublesome variables, disabling sv32 in caches, and preventing multidriven signals in proc_gen_bus_if to fix Xcelium stability; and connecting the wait-for-interrupt (WFI) signal to the top-level WFI for better multicore wrapper responsiveness.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Purdue-SoCET/RISCVBusiness: Focused on code quality and Verible linting standards. Delivered lint cleanup and Verible compliance in the l1_cache module and verification files, removed outdated code references, and resolved Verible lint warnings to improve maintainability and CI reliability. No blocking bugs fixed this month; primary work centered on quality improvements and code hygiene to support faster, safer future changes. Overall impact: higher code quality, maintainable codebase, and a solid foundation for upcoming feature work. Technologies/skills demonstrated: Verible linting standards, static analysis, code cleanup, and lint-driven quality gates, with hands-on refactoring in l1_cache and verification areas.
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Purdue-SoCET/RISCVBusiness: Focused on code quality and Verible linting standards. Delivered lint cleanup and Verible compliance in the l1_cache module and verification files, removed outdated code references, and resolved Verible lint warnings to improve maintainability and CI reliability. No blocking bugs fixed this month; primary work centered on quality improvements and code hygiene to support faster, safer future changes. Overall impact: higher code quality, maintainable codebase, and a solid foundation for upcoming feature work. Technologies/skills demonstrated: Verible linting standards, static analysis, code cleanup, and lint-driven quality gates, with hands-on refactoring in l1_cache and verification areas.
February 2026
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for Purdue-SoCET/RISCVBusiness focusing on reliability and correctness improvements. Delivered two major robustness enhancements in the RISCVBusiness stack: Bus Controller Robustness: L2 Error Forwarding in the writeback path; Cache Coherence Robustness: Decouple Tag Writes to prevent edge-case false snoop responses. These changes improved verification accuracy, memory operation safety, and overall system reliability, reducing risk of data corruption and flaky tests.
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for Purdue-SoCET/RISCVBusiness focusing on reliability and correctness improvements. Delivered two major robustness enhancements in the RISCVBusiness stack: Bus Controller Robustness: L2 Error Forwarding in the writeback path; Cache Coherence Robustness: Decouple Tag Writes to prevent edge-case false snoop responses. These changes improved verification accuracy, memory operation safety, and overall system reliability, reducing risk of data corruption and flaky tests.
September 2025
1 Commits
Sep 1, 2025Monthly performance summary for 2025-09 focusing on stabilizing builds and aligning hardware-software interfaces in Purdue-SoCET/RISCVBusiness. Key deliverables include a targeted coherence-bus refactor and configuration-name cleanups that reduce build errors and improve maintainability across modules.
1 Commits
Sep 1, 2025Monthly performance summary for 2025-09 focusing on stabilizing builds and aligning hardware-software interfaces in Purdue-SoCET/RISCVBusiness. Key deliverables include a targeted coherence-bus refactor and configuration-name cleanups that reduce build errors and improve maintainability across modules.
September 2025
May 2025
11 Commits • 4 Features
May 1, 2025May 2025 monthly summary for Purdue-SoCET/RISCVBusiness focusing on feature delivery, bug fixes, and impact across CI/CD, core configuration, ISA standardization, build stability, cache/bus coherence, and multicore testing.
May 2025
11 Commits • 4 Features
May 1, 2025May 2025 monthly summary for Purdue-SoCET/RISCVBusiness focusing on feature delivery, bug fixes, and impact across CI/CD, core configuration, ISA standardization, build stability, cache/bus coherence, and multicore testing.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 (Purdue-SoCET/RISCVBusiness): Improved reliability and observability in the RISC-V pipeline through interrupt handling stabilization and hardware performance monitoring. These efforts deliver measurable business value by reducing interrupt-related memory-operation hazards and by enabling detailed performance analysis via new cache-miss metrics and CSR exposure.
2 Commits • 1 Features
Apr 1, 2025April 2025 (Purdue-SoCET/RISCVBusiness): Improved reliability and observability in the RISC-V pipeline through interrupt handling stabilization and hardware performance monitoring. These efforts deliver measurable business value by reducing interrupt-related memory-operation hazards and by enabling detailed performance analysis via new cache-miss metrics and CSR exposure.
April 2025
December 2024
7 Commits • 2 Features
Dec 1, 2024Concise monthly summary for 2024-12 focused on Purdue-SoCET/RISCVBusiness. Highlights two major deliverables: a L1 cache coherence refactor with bus-based control and enhanced test infrastructure for cache stress and multicore validation. Emphasis on business value: more scalable coherence path, cleaner interfaces, and more reliable automated testing for faster validation cycles.
December 2024
7 Commits • 2 Features
Dec 1, 2024Concise monthly summary for 2024-12 focused on Purdue-SoCET/RISCVBusiness. Highlights two major deliverables: a L1 cache coherence refactor with bus-based control and enhanced test infrastructure for cache stress and multicore validation. Emphasis on business value: more scalable coherence path, cleaner interfaces, and more reliable automated testing for faster validation cycles.
September 2024
1 Commits
Sep 1, 2024September 2024: Addressed a reliability bug in cache abort signal handling within the RISCVBusiness coherency unit and bus controller. Implemented robust abort signal logic to properly recognize and manage ccabort signals, improving reliability during abort scenarios and strengthening cache coherence integrity across the system.
1 Commits
Sep 1, 2024September 2024: Addressed a reliability bug in cache abort signal handling within the RISCVBusiness coherency unit and bus controller. Implemented robust abort signal logic to properly recognize and manage ccabort signals, improving reliability during abort scenarios and strengthening cache coherence integrity across the system.
September 2024
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Quality Metrics
Correctness88.6%
Maintainability86.4%
Architecture84.4%
Performance80.6%
AI Usage20.8%
Skills & Technologies
Programming Languages
AssemblyCC++MarkdownPythonShellSystemVerilogYAML
Technical Skills
Assembly LanguageBus InterfaceBus Interface DesignBus InterfacesBus ProtocolC++ DevelopmentCI/CDCPU ArchitectureCache CoherenceCache CoherencyCache DesignConfiguration ManagementDebuggingDigital Logic DesignDocumentation
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