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Andrew Pullin

PROFILE

Andrew Pullin

Over four months, Pullin contributed to projects including basedhardware/omi, pytorch/executorch, and YosysHQ/yosys, focusing on modularity, backend robustness, and hardware design flows. He refactored the Opus codec integration in C and CMake for basedhardware/omi, improving maintainability and cross-module reuse. In pytorch/executorch, he enhanced Neutron backend API compatibility and multiprocessing fallback using Python, strengthening execution in restricted environments. For YosysHQ/yosys, he expanded SystemVerilog array assignment support and improved ABC9 flow stability with C++ and algorithm design, addressing real-world synthesis issues. Pullin’s work demonstrated depth in backend development, compiler design, and embedded systems, delivering robust, maintainable solutions.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

5Total
Bugs
0
Commits
5
Features
5
Lines of code
500,334
Activity Months4

Your Network

706 people

Shared Repositories

518
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Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for YosysHQ/yosys focusing on business value and technical achievements. Implemented ABC9 Flow Enhancements to improve loop stability and regression testing, addressing real-world issues observed in ABC9 flows. The changes preserve topological-loop assertions during SCC-based modifications, add a fallback mechanism to handle residual loops after SCC breaking, apply additional $__ABC9_SCC_BREAKER cuts on non-box loop cells, rebuild toposort, and re-check the existing assertions. Regression coverage is expanded with a regression test validating the non-box loop handling and preserving pre-ABC9 SCC tagging across all cell types.

January 2026

2 Commits • 2 Features

Jan 1, 2026

January 2026 monthly summary focused on delivering key enhancements and fixes across the pytorch/executorch and Yosys repos, highlighting business value from expanded functionality and improved reliability.

November 2025

1 Commits • 1 Features

Nov 1, 2025

Monthly summary for 2025-11 focused on Executorch repository (pytorch/executorch). Key feature delivered this month targeted API compatibility and execution robustness in Neutron backend.

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025: Opus Codec Library Integration for Modularity and Maintainability delivered for basedhardware/omi. Moved Opus codec into a dedicated library build, introduced a new CMakeLists.txt to organize the library sources and compile options, improving modularity, maintainability, and build flag management while reducing warnings from Opus code. This work lays groundwork for cross-module reuse and smoother CI.

Activity

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Quality Metrics

Correctness92.0%
Maintainability88.0%
Architecture92.0%
Performance80.0%
AI Usage40.0%

Skills & Technologies

Programming Languages

CC++CMakePythonSystemVerilog

Technical Skills

API integrationAST manipulationC programmingC++ programmingCMakePythonalgorithm designback end developmentbackend developmentcompiler designdata processingembedded systemshardware description languageslibrary developmentmachine learning

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

pytorch/executorch

Nov 2025 Jan 2026
2 Months active

Languages Used

Python

Technical Skills

API integrationbackend developmentmultiprocessingPythonback end developmentdata processing

YosysHQ/yosys

Jan 2026 Feb 2026
2 Months active

Languages Used

SystemVerilogC++

Technical Skills

AST manipulationcompiler designhardware description languagesC++ programmingalgorithm designsoftware testing

basedhardware/omi

Apr 2025 Apr 2025
1 Month active

Languages Used

CCMake

Technical Skills

C programmingCMakeembedded systemslibrary development