tathagatasrimani/codesign
Feb 2025 – Oct 2025
7 Months active
Languages Used
CBashCshJSONMarkdownPythonYAMLC++
Technical Skills
numerical analysisperformance benchmarkingscientific computingData Flow GraphDocumentationEDA Tools
Eric Dubberstein
PROFILE
Eric Dubberstein
Eric Dubberstein developed and maintained the codesign repository, delivering robust hardware design automation and reproducible build workflows over seven months. He engineered end-to-end netlist analysis, automated toolchain setup, and scalable benchmarking, integrating technologies like Python, C++, and Verilog. His work included environment provisioning with Python virtual environments, OpenROAD and ScaleHLS integration, and advanced data flow graph mapping for hardware verification. Eric addressed reproducibility, debugging, and deployment challenges by implementing deterministic builds, enhanced logging, and compatibility across Linux environments. The depth of his contributions is reflected in the breadth of features, bug fixes, and the maintainable, enterprise-ready infrastructure he established.
Overall Statistics
Feature vs Bugs
76%Features
Repository Contributions
109Total
Bugs
14
Commits
109
Features
44
Lines of code
21,338
Activity Months7
Your Network
20 people
Work History
October 2025
33 Commits • 15 Features
Oct 1, 2025October 2025 monthly summary for codesign (tathagatasrimani/codesign): Focus on scaling feature development, stability, reproducibility, and test coverage to accelerate design-space exploration and deployment readiness. Key highlights include scaling improvements (OpenROAD alpha scaling with iterative refinements and 2x2 GEMM scaling across 10 forward/inverse iterations with observed wirelength reductions), stability and determinism enhancements (reverted CACTI submodule to restore Python bindings; deterministic results via a seed and fractional arithmetic for reproducible experiments), expanded test configurations and capabilities (Vitis ResNet configs, 32x32 GEMM support, scaleHLS path), and quality/maintainability improvements (environment cleanup removing legacy files, documentation updates, and CMU install script enhancements).
33 Commits • 15 Features
Oct 1, 2025October 2025 monthly summary for codesign (tathagatasrimani/codesign): Focus on scaling feature development, stability, reproducibility, and test coverage to accelerate design-space exploration and deployment readiness. Key highlights include scaling improvements (OpenROAD alpha scaling with iterative refinements and 2x2 GEMM scaling across 10 forward/inverse iterations with observed wirelength reductions), stability and determinism enhancements (reverted CACTI submodule to restore Python bindings; deterministic results via a seed and fractional arithmetic for reproducible experiments), expanded test configurations and capabilities (Vitis ResNet configs, 32x32 GEMM support, scaleHLS path), and quality/maintainability improvements (environment cleanup removing legacy files, documentation updates, and CMU install script enhancements).
October 2025
September 2025
40 Commits • 17 Features
Sep 1, 2025Month: 2025-09 — Tathagatasrimani codesign. Focus this month was on delivering reproducible environment provisioning, stabilizing build workflows, and improving observability while consolidating CMU/ScaleHLS/OpenROAD integration to support enterprise-grade OpenROAD-based workflows. Key features delivered and major bugs fixed are summarized below with business value and technical impact. Key features delivered: - Recreated and stabilized environment setup scripts and baseline scaffolding to support provisioning; migrated environment management to Python virtual environments (venv) instead of conda; opened RHEL8 compatibility checks and compatibility with csh shell for broader deployment scenarios. This included consolidation of CMU environment setup and ScaleHLS integration, with pointer fixes and cleanup to streamline onboarding. Commits include initial re-creation of environment setup scripts and subsequent venv switch. - CMU/ScaleHLS environment and build improvements: re-ordered setup steps, cleaned scale-hls modules, and added checks for vitis setup; integration work to align scalehls-hida env with the conda setup to support CMU workflows. - OpenROAD readiness and compatibility: switched to a version compatible with RHEL8, adjusted area reductions and testfile handling, refactored openroad_interface to an OOP style for non-static methods, and added run_codesign alias with README updates. - Observability and reliability improvements: improved logging readability and added debugging logs, enhanced def_generator debugging, and introduced a robust checkpoint system with a post-exit checkpoint option to preserve transient work. Major bugs fixed: - Scale HLS setup stabilization: resolved end-to-end issues in scale_hls_setup and ensured both setup script and scale_hls run reliably (multiple commits). - Minor port/tcl script issues and missing allowed_functions argument: addressed with targeted fixes to improve reliability across environments. - Def generator robustness: fixed errors and introduced handling for unimplemented exceptions to reduce crashes during code generation. - OpenRoad area constraint/config handling: corrected area constraint settings and improved config/testfile handling. - Tracking of virtual environments in ScaleHLS: fixed issues with venv tracking as ScaleHLS changes. Overall impact and accomplishments: - Significantly improved reproducibility, reliability, and maintainability of the build and environment provisioning pipeline, reducing onboarding time for new environments and decreasing setup-related incidents. - Enhanced enterprise-grade observability (logging/debug) and debugging capabilities, enabling faster triage and issue resolution. - Improved compatibility across CMU, ScaleHLS, and OpenROAD toolchains on RHEL8, supporting smoother deployment in production-like environments. - Strengthened developer experience with better documentation, aliases, and CI-friendly configurations, contributing to faster feature delivery in future sprints. Technologies/skills demonstrated: - Python virtual environments (venv) adoption and shell scripting for provisioning - Linux/RHEL8 compatibility and cross-shell scripting (csh support) - OpenROAD/OpenHLS toolchains integration and version management - Logging best practices, debugging techniques, and defensive programming in def_generator - Build automation, environment consolidation, and code quality improvements (gitignore, documentation, aliases)
September 2025
40 Commits • 17 Features
Sep 1, 2025Month: 2025-09 — Tathagatasrimani codesign. Focus this month was on delivering reproducible environment provisioning, stabilizing build workflows, and improving observability while consolidating CMU/ScaleHLS/OpenROAD integration to support enterprise-grade OpenROAD-based workflows. Key features delivered and major bugs fixed are summarized below with business value and technical impact. Key features delivered: - Recreated and stabilized environment setup scripts and baseline scaffolding to support provisioning; migrated environment management to Python virtual environments (venv) instead of conda; opened RHEL8 compatibility checks and compatibility with csh shell for broader deployment scenarios. This included consolidation of CMU environment setup and ScaleHLS integration, with pointer fixes and cleanup to streamline onboarding. Commits include initial re-creation of environment setup scripts and subsequent venv switch. - CMU/ScaleHLS environment and build improvements: re-ordered setup steps, cleaned scale-hls modules, and added checks for vitis setup; integration work to align scalehls-hida env with the conda setup to support CMU workflows. - OpenROAD readiness and compatibility: switched to a version compatible with RHEL8, adjusted area reductions and testfile handling, refactored openroad_interface to an OOP style for non-static methods, and added run_codesign alias with README updates. - Observability and reliability improvements: improved logging readability and added debugging logs, enhanced def_generator debugging, and introduced a robust checkpoint system with a post-exit checkpoint option to preserve transient work. Major bugs fixed: - Scale HLS setup stabilization: resolved end-to-end issues in scale_hls_setup and ensured both setup script and scale_hls run reliably (multiple commits). - Minor port/tcl script issues and missing allowed_functions argument: addressed with targeted fixes to improve reliability across environments. - Def generator robustness: fixed errors and introduced handling for unimplemented exceptions to reduce crashes during code generation. - OpenRoad area constraint/config handling: corrected area constraint settings and improved config/testfile handling. - Tracking of virtual environments in ScaleHLS: fixed issues with venv tracking as ScaleHLS changes. Overall impact and accomplishments: - Significantly improved reproducibility, reliability, and maintainability of the build and environment provisioning pipeline, reducing onboarding time for new environments and decreasing setup-related incidents. - Enhanced enterprise-grade observability (logging/debug) and debugging capabilities, enabling faster triage and issue resolution. - Improved compatibility across CMU, ScaleHLS, and OpenROAD toolchains on RHEL8, supporting smoother deployment in production-like environments. - Strengthened developer experience with better documentation, aliases, and CI-friendly configurations, contributing to faster feature delivery in future sprints. Technologies/skills demonstrated: - Python virtual environments (venv) adoption and shell scripting for provisioning - Linux/RHEL8 compatibility and cross-shell scripting (csh support) - OpenROAD/OpenHLS toolchains integration and version management - Logging best practices, debugging techniques, and defensive programming in def_generator - Build automation, environment consolidation, and code quality improvements (gitignore, documentation, aliases)
July 2025
6 Commits • 5 Features
Jul 1, 2025July 2025 performance highlights for tathagatasrimani/codesign. Key deliverables focused on platform consolidation, AES hardware modeling, and bug fixes that jointly improve maintainability, accuracy, and performance of the AES-focused workflow. Highlights include: (1) ScaleHLS integration as a Git submodule to streamline dependency management and project inclusion (commit efab59aba225788de4de7bcd5f67d6756b5e80f9); (2) AES Benchmark Suite – initial implementation with basic_aes, including C++ implementation, testbench, and build scripts; matrix benchmark refactor and enhanced logging (commit 02061de5f87d106ab77110b2df15116c0ffd29ab); (3) AES Benchmark – DFG-to-Netlist mapping improvements, with enhanced name processing and approximate matching to improve hardware mapping (commit 65e52556f2aea5ae7013ded03c3a1c510f07b974); (4) AES Core enhancements and logging improvements, including a new bitwise XOR core for AES operations and improved logging for unmapped DFG and netlist nodes, with forward pass support for matrix multiplication (commit 65067e14a55a499390c6e7ddaa54e8c71ce147a8); (5) Def generator bug fix – correct grouping of Regs with other node types to refine node processing (commit 5bdec9dd72cac78848c656f36c7773569a3e41cf). These changes deliver concrete features, reduce modeling risk, and lay groundwork for expanded AES capabilities.
6 Commits • 5 Features
Jul 1, 2025July 2025 performance highlights for tathagatasrimani/codesign. Key deliverables focused on platform consolidation, AES hardware modeling, and bug fixes that jointly improve maintainability, accuracy, and performance of the AES-focused workflow. Highlights include: (1) ScaleHLS integration as a Git submodule to streamline dependency management and project inclusion (commit efab59aba225788de4de7bcd5f67d6756b5e80f9); (2) AES Benchmark Suite – initial implementation with basic_aes, including C++ implementation, testbench, and build scripts; matrix benchmark refactor and enhanced logging (commit 02061de5f87d106ab77110b2df15116c0ffd29ab); (3) AES Benchmark – DFG-to-Netlist mapping improvements, with enhanced name processing and approximate matching to improve hardware mapping (commit 65e52556f2aea5ae7013ded03c3a1c510f07b974); (4) AES Core enhancements and logging improvements, including a new bitwise XOR core for AES operations and improved logging for unmapped DFG and netlist nodes, with forward pass support for matrix multiplication (commit 65067e14a55a499390c6e7ddaa54e8c71ce147a8); (5) Def generator bug fix – correct grouping of Regs with other node types to refine node processing (commit 5bdec9dd72cac78848c656f36c7773569a3e41cf). These changes deliver concrete features, reduce modeling risk, and lay groundwork for expanded AES capabilities.
July 2025
June 2025
7 Commits • 2 Features
Jun 1, 2025Monthly summary for 2025-06 focusing on business value and technical achievements in the codesign repo. Key features delivered include Enhanced DFG-to-netlist mapping with resource sharing and IO-based node matching, and Memory-aware netlist-to-DFG mapping with Verilator tooling. Notable bug fixes addressing resource-sharing mapping accuracy and IO-based matching, leading to improved mapping coverage. Overall impact: improved mapping accuracy, stronger debugging capabilities, and verifiable verification workflow using Verilator. Technologies demonstrated: Verilator tooling, Yosys JSON parsing, memory-node handling, resource-sharing algorithms, and mapping statistics generation.
June 2025
7 Commits • 2 Features
Jun 1, 2025Monthly summary for 2025-06 focusing on business value and technical achievements in the codesign repo. Key features delivered include Enhanced DFG-to-netlist mapping with resource sharing and IO-based node matching, and Memory-aware netlist-to-DFG mapping with Verilator tooling. Notable bug fixes addressing resource-sharing mapping accuracy and IO-based matching, leading to improved mapping coverage. Overall impact: improved mapping accuracy, stronger debugging capabilities, and verifiable verification workflow using Verilator. Technologies demonstrated: Verilator tooling, Yosys JSON parsing, memory-node handling, resource-sharing algorithms, and mapping statistics generation.
May 2025
18 Commits • 2 Features
May 1, 2025May 2025: Delivered end-to-end netlist analysis and automated toolchain setup for the Codesign repository, enabling reliable extraction of C-core, memory, and FF connectivity and a repeatable OpenROAD environment. The work established a robust topology model and repeatable build workflow that underpins faster debugging, safer design exploration, and consistent CI runs.
18 Commits • 2 Features
May 1, 2025May 2025: Delivered end-to-end netlist analysis and automated toolchain setup for the Codesign repository, enabling reliable extraction of C-core, memory, and FF connectivity and a repeatable OpenROAD environment. The work established a robust topology model and repeatable build workflow that underpins faster debugging, safer design exploration, and consistent CI runs.
May 2025
April 2025
4 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for tathagatasrimani/codesign: Delivered automation and data-flow aligned netlist capabilities to improve reproducibility, throughput, and future hardware-flow reliability. Key outcomes include a Linux environment bootstrap (Miniconda install, environment creation, and package updates) and Yosys-based netlist generation with a Python parser, plus storage of parsed netlists in the hardware object and DFG-alignment (removing the 'end' node before assignment). Documentation updates accompany the feature work to aid onboarding and maintenance. These changes reduce setup time, minimize manual errors, and lay groundwork for OpenROAD integration and robust hardware verification.
April 2025
4 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for tathagatasrimani/codesign: Delivered automation and data-flow aligned netlist capabilities to improve reproducibility, throughput, and future hardware-flow reliability. Key outcomes include a Linux environment bootstrap (Miniconda install, environment creation, and package updates) and Yosys-based netlist generation with a Python parser, plus storage of parsed netlists in the hardware object and DFG-alignment (removing the 'end' node before assignment). Documentation updates accompany the feature work to aid onboarding and maintenance. These changes reduce setup time, minimize manual errors, and lay groundwork for OpenROAD integration and robust hardware verification.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025: Delivered PolyBench/C Benchmark Suite Integration into codesign, establishing a standardized performance measurement workflow and enabling cross-implementation comparisons. No major bugs fixed this month. Overall impact centers on providing a reproducible baseline for performance optimization and decision-making. Technologies/skills demonstrated include integration of external benchmark suites, performance benchmarking methodologies, and commit-based traceability.
1 Commits • 1 Features
Feb 1, 2025February 2025: Delivered PolyBench/C Benchmark Suite Integration into codesign, establishing a standardized performance measurement workflow and enabling cross-implementation comparisons. No major bugs fixed this month. Overall impact centers on providing a reproducible baseline for performance optimization and decision-making. Technologies/skills demonstrated include integration of external benchmark suites, performance benchmarking methodologies, and commit-based traceability.
February 2025
Activity
Loading activity data...
Quality Metrics
Correctness84.2%
Maintainability84.6%
Architecture80.8%
Performance72.8%
AI Usage20.2%
Skills & Technologies
Programming Languages
BashCC++CshGitJSONMarkdownPythonShellTcl
Technical Skills
Algorithm OptimizationBackend DevelopmentBug FixingBuild AutomationBuild Process OptimizationBuild System ConfigurationBuild SystemsC++C++ DevelopmentCI/CDChip DesignCircuit Design AnalysisCode AnalysisCode GenerationCode Organization
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline