verilog-to-routing/vtr-verilog-to-routing
Jan 2025 – Jul 2026
19 Months active
Languages Used
BashC++RSTShellYAMLMarkdownVerilogCMake
Technical Skills
Build AutomationBuild SystemsC++CI/CDDebuggingDocumentation
Amir Poolad
PROFILE
Amir Poolad
Over 19 months, contributed extensively to the verilog-to-routing/vtr-verilog-to-routing repository, building and modernizing core FPGA architecture tooling. Delivered features such as robust interposer and scatter-gather architecture parsing, advanced routing and placement algorithms, and enhanced CI/CD workflows. Applied C++ and Python to refactor data structures, optimize algorithms, and improve code maintainability, while strengthening regression testing and documentation for developer onboarding. Addressed critical bugs in grid rendering, parsing, and cost modeling, and introduced configurable cost models and history-based pricing for routing. The work emphasized reliability, performance, and extensibility, enabling scalable development and more accurate, maintainable FPGA design flows.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
265Total
Bugs
25
Commits
265
Features
61
Lines of code
27,910,914
Activity Months19
Your Network
48 peopleShared Repositories
48
Andrew BoutrosMember
AlexandreSingerMember
alexpoupakisMember
Alireza AzadiMember
amin1377Member
Amir.AMember
Amin MohagheghMember
Amin MohagheghMember
andrewboutrosMember
Work History
July 2026
3 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary: Delivered a high-impact bug fix and documentation updates for verilog-to-routing/vtr-verilog-to-routing that improve placement cost accuracy, model reliability, and developer usability. Result: more accurate annealing-based placement costs, clearer API guidance, and better onboarding.
3 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary: Delivered a high-impact bug fix and documentation updates for verilog-to-routing/vtr-verilog-to-routing that improve placement cost accuracy, model reliability, and developer usability. Result: more accurate annealing-based placement costs, clearer API guidance, and better onboarding.
July 2026
June 2026
54 Commits • 14 Features
Jun 1, 2026June 2026 saw significant improvements to interposer cost modeling, history-based pricing, and routing reliability in verilog-to-routing/vtr-verilog-to-routing. Delivered comprehensive interposer cost enhancements (two-stage cost handling, gain multiplier checks, non-zero defaults for placement cost, handler existence checks, zero-cost validation, and CLI parameter retrieval), added interposer cost history to reduce dependency on live SA data, fixed critical cost and placement bugs, expanded architecture coverage with 2D Hecate (7nm) CI tests, and strengthened testing, documentation, and environment plumbing to improve maintainability and time-to-delivery.
June 2026
54 Commits • 14 Features
Jun 1, 2026June 2026 saw significant improvements to interposer cost modeling, history-based pricing, and routing reliability in verilog-to-routing/vtr-verilog-to-routing. Delivered comprehensive interposer cost enhancements (two-stage cost handling, gain multiplier checks, non-zero defaults for placement cost, handler existence checks, zero-cost validation, and CLI parameter retrieval), added interposer cost history to reduce dependency on live SA data, fixed critical cost and placement bugs, expanded architecture coverage with 2D Hecate (7nm) CI tests, and strengthened testing, documentation, and environment plumbing to improve maintainability and time-to-delivery.
May 2026
34 Commits • 10 Features
May 1, 2026May 2026 summary for verilog-to-routing/vtr-verilog-to-routing: Delivered reliability and maintainability improvements across the codebase, with a focus on robust pin feasibility, compiler/toolchain resilience, and architectural modeling for 2.5D flows. Implemented pin feasibility hardening (flattened feasibility function; turning the blif name check in the packer into an assert), fixed GCC-16 compile errors and warnings, added clang-tidy bugprone checks and fixes, migrated linting infrastructure and improved documentation, modernized vtr_memory usage and related memory code, and expanded testing with Hecate 2.5D regression tests and golden results. Introduced APPack inter-die gain attenuation and interposer cost modeling to support more accurate cost estimation, and resolved interposer lookahead issues and test regressions. Overall, strengthened build stability, improved test coverage, and advanced modeling capabilities for next-gen architectures.
34 Commits • 10 Features
May 1, 2026May 2026 summary for verilog-to-routing/vtr-verilog-to-routing: Delivered reliability and maintainability improvements across the codebase, with a focus on robust pin feasibility, compiler/toolchain resilience, and architectural modeling for 2.5D flows. Implemented pin feasibility hardening (flattened feasibility function; turning the blif name check in the packer into an assert), fixed GCC-16 compile errors and warnings, added clang-tidy bugprone checks and fixes, migrated linting infrastructure and improved documentation, modernized vtr_memory usage and related memory code, and expanded testing with Hecate 2.5D regression tests and golden results. Introduced APPack inter-die gain attenuation and interposer cost modeling to support more accurate cost estimation, and resolved interposer lookahead issues and test regressions. Overall, strengthened build stability, improved test coverage, and advanced modeling capabilities for next-gen architectures.
May 2026
April 2026
12 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing highlights key features delivered, major fixes, and business impact. The primary delivery focused on Interposer Lookahead enhancements with reliability improvements and expanded documentation, complemented by packaging/installation reliability fixes to improve on-boarding across dnF-based Linux distributions.
April 2026
12 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing highlights key features delivered, major fixes, and business impact. The primary delivery focused on Interposer Lookahead enhancements with reliability improvements and expanded documentation, complemented by packaging/installation reliability fixes to improve on-boarding across dnF-based Linux distributions.
March 2026
3 Commits • 2 Features
Mar 1, 2026March 2026: Delivered core reliability and configurability improvements for verilog-to-routing/vtr-verilog-to-routing. Implemented macro placement legality bounds checking to prevent illegal placements, added net file constraint support in task configurations to enable net-file-driven constraint handling, and improved maintainability with documentation for interposer lookahead. These changes reduce risk of placement errors, enable more flexible design workflows, and accelerate onboarding for new contributors. Key commits included: 637e11856576fd9c2c4d0944c8748ee26f924b65, 246e34075aa1afe5e02a946e743b9de02816dafa, and 5db4fa1db2d4ea221ae998570547ebb1197057bc.
3 Commits • 2 Features
Mar 1, 2026March 2026: Delivered core reliability and configurability improvements for verilog-to-routing/vtr-verilog-to-routing. Implemented macro placement legality bounds checking to prevent illegal placements, added net file constraint support in task configurations to enable net-file-driven constraint handling, and improved maintainability with documentation for interposer lookahead. These changes reduce risk of placement errors, enable more flexible design workflows, and accelerate onboarding for new contributors. Key commits included: 637e11856576fd9c2c4d0944c8748ee26f924b65, 246e34075aa1afe5e02a946e743b9de02816dafa, and 5db4fa1db2d4ea221ae998570547ebb1197057bc.
March 2026
February 2026
11 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing: Delivered foundational 2.5D Stratix IV architecture support with per-die/grid capabilities, enhanced interposer legality and 2.5D wiring reliability, and improvements in code quality, docs, and packaging. Addressed critical parsing/validation issues to reduce misconfigurations. These changes enable deployment across 2D/2.5D/3D FPGA designs, improve runtime reliability, and streamline upgrade paths, delivering business value through faster feature uptake and more robust tooling.
February 2026
11 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing: Delivered foundational 2.5D Stratix IV architecture support with per-die/grid capabilities, enhanced interposer legality and 2.5D wiring reliability, and improvements in code quality, docs, and packaging. Addressed critical parsing/validation issues to reduce misconfigurations. These changes enable deployment across 2D/2.5D/3D FPGA designs, improve runtime reliability, and streamline upgrade paths, delivering business value through faster feature uptake and more robust tooling.
January 2026
4 Commits • 2 Features
Jan 1, 2026January 2026: Delivered a critical routing lookahead refactor to apply the criticality multiplier consistently across scenarios, strengthened CI and regression testing, and fixed a parsing crash in parse_vtr_task. These efforts improve routing delay/congestion estimation accuracy, increase CI stability and regression fidelity, and reduce developer time spent on parsing issues.
4 Commits • 2 Features
Jan 1, 2026January 2026: Delivered a critical routing lookahead refactor to apply the criticality multiplier consistently across scenarios, strengthened CI and regression testing, and fixed a parsing crash in parse_vtr_task. These efforts improve routing delay/congestion estimation accuracy, increase CI stability and regression fidelity, and reduce developer time spent on parsing issues.
January 2026
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing. Focused on stabilizing circuit grid rendering by fixing an off-by-one tile coordinate bug, improving rendering accuracy and reliability, and setting the stage for future grid enhancements.
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing. Focused on stabilizing circuit grid rendering by fixing an off-by-one tile coordinate bug, improving rendering accuracy and reliability, and setting the stage for future grid enhancements.
November 2025
26 Commits • 4 Features
Nov 1, 2025November 2025 for verilog-to-routing/vtr-verilog-to-routing focused on delivering robust interposer and RR Graph capabilities, improving routing correctness, maintainability, and developer productivity. Key outcomes include delivered feature enhancements, targeted bug fixes, and documentation/code hygiene that reduce integration risk and enable scalable development across the RR graph and interposer subsystems.
26 Commits • 4 Features
Nov 1, 2025November 2025 for verilog-to-routing/vtr-verilog-to-routing focused on delivering robust interposer and RR Graph capabilities, improving routing correctness, maintainability, and developer productivity. Key outcomes include delivered feature enhancements, targeted bug fixes, and documentation/code hygiene that reduce integration risk and enable scalable development across the RR graph and interposer subsystems.
November 2025
October 2025
10 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary: Delivered major routing infrastructure improvements and stabilized signal handling for the project. Key features include a generic, configurable edge sorting overhaul for rr_graph_storage that refactors edge comparators and partitioning, modernizes initialization, and improves performance and correctness. The work also advanced code hygiene and reliability by moving edge comparison functors to anonymous namespaces and by passing rr edge indices by value, plus achieving C++17 compatibility. In parallel, a signal handler header dependency fix ensured required definitions are explicitly included, improving reliability. Overall impact: faster, more robust routing graph construction, reduced risk of linkage issues, and easier long-term maintenance. Technologies demonstrated: C++, templates, custom sorters, edge sorting algorithms, anonymous namespaces, and modern C++17 migration; strong emphasis on performance, correctness, and maintainability.
October 2025
10 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary: Delivered major routing infrastructure improvements and stabilized signal handling for the project. Key features include a generic, configurable edge sorting overhaul for rr_graph_storage that refactors edge comparators and partitioning, modernizes initialization, and improves performance and correctness. The work also advanced code hygiene and reliability by moving edge comparison functors to anonymous namespaces and by passing rr edge indices by value, plus achieving C++17 compatibility. In parallel, a signal handler header dependency fix ensured required definitions are explicitly included, improving reliability. Overall impact: faster, more robust routing graph construction, reduced risk of linkage issues, and easier long-term maintenance. Technologies demonstrated: C++, templates, custom sorters, edge sorting algorithms, anonymous namespaces, and modern C++17 migration; strong emphasis on performance, correctness, and maintainability.
September 2025
14 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary focused on delivering architecture improvements, stability, and documentation enhancements in verilog-to-routing/vtr-verilog-to-routing. Key outcomes include new interposer architecture parsing and robustness, a major grid/layout refactor to simplify maintenance and remove circular dependencies, and expanded LibArchFPGA documentation. Also addressed a critical consistency bug across VPR, LibArchFPGA, and LibRRGraph to ensure undefined values are uniformly -1, with accompanying tests.
14 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary focused on delivering architecture improvements, stability, and documentation enhancements in verilog-to-routing/vtr-verilog-to-routing. Key outcomes include new interposer architecture parsing and robustness, a major grid/layout refactor to simplify maintenance and remove circular dependencies, and expanded LibArchFPGA documentation. Also addressed a critical consistency bug across VPR, LibArchFPGA, and LibRRGraph to ensure undefined values are uniformly -1, with accompanying tests.
September 2025
August 2025
12 Commits • 3 Features
Aug 1, 2025Concise monthly summary for 2025-08 highlighting business value and technical achievements in verilog-to-routing/vtr-verilog-to-routing. Key features delivered: - Scatter-Gather Documentation and Parser UX: Adds an SVG diagram for scatter-gather patterns and clarifies parser usage, error handling, and architecture file configuration, improving developer onboarding and user guidance. - Regression Test Reliability and Test Infra Enhancements: Stabilizes regression tests, improves error reporting, and updates baselines to reflect correct expected outcomes, reducing flaky tests and accelerating CI feedback. - Code Quality and Maintainability Improvements: Refactors for robustness, including enum typing, inline mappings, and clarified UNDEFINED constants; RRGraph coding style updates for maintainability. Major bugs fixed: - Scatter-Gather WireConn Parsing Correctness: Fixes parsing and validation of wireconn attributes to prevent crashes and incorrect definitions, increasing reliability of the Scatter-Gather functionality. Overall impact and accomplishments: - Increased stability and correctness in Scatter-Gather workflows, with more reliable test infrastructure and clearer documentation, enabling faster feature iteration and safer architecture file configurations. - Reduced runtime errors and false negatives in tests, lowering support overhead and improving developer velocity. Technologies/skills demonstrated: - C++/RRGraph code quality improvements and enum class usage. - Python-based test infra, linting hygiene, and improved test baselines. - Documentation design including inline diagrams (SVG) for complex data flows, and clear error messaging across parser components. - Proactive code maintenance: enum safety, inline mappings, and clarified constants for safer, more maintainable code.
August 2025
12 Commits • 3 Features
Aug 1, 2025Concise monthly summary for 2025-08 highlighting business value and technical achievements in verilog-to-routing/vtr-verilog-to-routing. Key features delivered: - Scatter-Gather Documentation and Parser UX: Adds an SVG diagram for scatter-gather patterns and clarifies parser usage, error handling, and architecture file configuration, improving developer onboarding and user guidance. - Regression Test Reliability and Test Infra Enhancements: Stabilizes regression tests, improves error reporting, and updates baselines to reflect correct expected outcomes, reducing flaky tests and accelerating CI feedback. - Code Quality and Maintainability Improvements: Refactors for robustness, including enum typing, inline mappings, and clarified UNDEFINED constants; RRGraph coding style updates for maintainability. Major bugs fixed: - Scatter-Gather WireConn Parsing Correctness: Fixes parsing and validation of wireconn attributes to prevent crashes and incorrect definitions, increasing reliability of the Scatter-Gather functionality. Overall impact and accomplishments: - Increased stability and correctness in Scatter-Gather workflows, with more reliable test infrastructure and clearer documentation, enabling faster feature iteration and safer architecture file configurations. - Reduced runtime errors and false negatives in tests, lowering support overhead and improving developer velocity. Technologies/skills demonstrated: - C++/RRGraph code quality improvements and enum class usage. - Python-based test infra, linting hygiene, and improved test baselines. - Documentation design including inline diagrams (SVG) for complex data flows, and clear error messaging across parser components. - Proactive code maintenance: enum safety, inline mappings, and clarified constants for safer, more maintainable code.
July 2025
19 Commits • 2 Features
Jul 1, 2025July 2025 performance summary for verilog-to-routing/vtr-verilog-to-routing. Implemented end-to-end support for scatter-gather patterns in architecture XML with parsing, sanitization, tests, and comprehensive 3D switchblock documentation. Also improved dependency hygiene by removing system-wide Sphinx installation in the installer scripts, reducing build fragility and improving isolation for downstream users. These efforts deliver tangible business value by enabling accurate routing support for scatter-gather architectures, improving developer onboarding, and strengthening the project’s maintainability.
19 Commits • 2 Features
Jul 1, 2025July 2025 performance summary for verilog-to-routing/vtr-verilog-to-routing. Implemented end-to-end support for scatter-gather patterns in architecture XML with parsing, sanitization, tests, and comprehensive 3D switchblock documentation. Also improved dependency hygiene by removing system-wide Sphinx installation in the installer scripts, reducing build fragility and improving isolation for downstream users. These efforts deliver tangible business value by enabling accurate routing support for scatter-gather architectures, improving developer onboarding, and strengthening the project’s maintainability.
July 2025
June 2025
10 Commits • 3 Features
Jun 1, 2025June 2025 for verilog-to-routing/vtr-verilog-to-routing focused on stabilizing nightly regression results, improving parsing accuracy for key architectures, and modernizing dependency and build tooling. Delivered a practical golden results workflow for nightly tests, enhanced QoR and Xilinx parsing accuracy, integrated the Ezgl library as a submodule, and upgraded documentation/build tooling to streamline contributor onboarding and CI reliability. These efforts increased test reliability, data fidelity for QoR metrics, and build reproducibility, enabling faster iteration cycles and higher confidence in regression baselines.
June 2025
10 Commits • 3 Features
Jun 1, 2025June 2025 for verilog-to-routing/vtr-verilog-to-routing focused on stabilizing nightly regression results, improving parsing accuracy for key architectures, and modernizing dependency and build tooling. Delivered a practical golden results workflow for nightly tests, enhanced QoR and Xilinx parsing accuracy, integrated the Ezgl library as a submodule, and upgraded documentation/build tooling to streamline contributor onboarding and CI reliability. These efforts increased test reliability, data fidelity for QoR metrics, and build reproducibility, enabling faster iteration cycles and higher confidence in regression baselines.
May 2025
8 Commits • 2 Features
May 1, 2025May 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing: Delivered molecule-based seed selection for clustering by refactoring the GreedySeedSelector to operate on molecules, enabling higher-quality seed gains and better scalability. Implemented comprehensive documentation, CI, and build-system improvements to improve maintainability and reliability, including docs for t_pb_type::is_root and is_primitive, include sanitization guidance, nightly test artifact uploads, and enhanced makefile build-type documentation. Overall, these changes improve clustering accuracy and repeatable builds, speeding up feedback cycles and onboarding for contributors.
8 Commits • 2 Features
May 1, 2025May 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing: Delivered molecule-based seed selection for clustering by refactoring the GreedySeedSelector to operate on molecules, enabling higher-quality seed gains and better scalability. Implemented comprehensive documentation, CI, and build-system improvements to improve maintainability and reliability, including docs for t_pb_type::is_root and is_primitive, include sanitization guidance, nightly test artifact uploads, and enhanced makefile build-type documentation. Overall, these changes improve clustering accuracy and repeatable builds, speeding up feedback cycles and onboarding for contributors.
May 2025
April 2025
10 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on delivering governance improvements for issue management and modernization of the packing pipeline. The work reduces manual maintenance, improves throughput, and strengthens code quality across critical pipeline components.
April 2025
10 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on delivering governance improvements for issue management and modernization of the packing pipeline. The work reduces manual maintenance, improves throughput, and strengthens code quality across critical pipeline components.
March 2025
16 Commits • 2 Features
Mar 1, 2025March 2025 performance summary for verilog-to-routing/vtr-verilog-to-routing: Delivered a major centralization of atom-to-PB mapping and packing enhancements, strengthened thread-safety, and improved maintainability. Implemented AtomPBLookUp/AtomPBBimap with locking to prevent race conditions in packing, removed legacy atom-to-PB lookups from packing, and eliminated code duplication between global context and AtomPBBimap. Added comprehensive documentation (Doxygen) and a reset helper, and performed targeted code quality improvements (clang-format 18 compliance). Result: more robust packing, reduced risk of threading issues, easier future enhancements, and improved developer productivity.
16 Commits • 2 Features
Mar 1, 2025March 2025 performance summary for verilog-to-routing/vtr-verilog-to-routing: Delivered a major centralization of atom-to-PB mapping and packing enhancements, strengthened thread-safety, and improved maintainability. Implemented AtomPBLookUp/AtomPBBimap with locking to prevent race conditions in packing, removed legacy atom-to-PB lookups from packing, and eliminated code duplication between global context and AtomPBBimap. Added comprehensive documentation (Doxygen) and a reset helper, and performed targeted code quality improvements (clang-format 18 compliance). Result: more robust packing, reduced risk of threading issues, easier future enhancements, and improved developer productivity.
March 2025
February 2025
13 Commits • 3 Features
Feb 1, 2025February 2025 focused on stabilizing and modernizing the NightlyTestManual CI workflow for verilog-to-routing/vtr-verilog-to-routing, delivering clearer developer guidance, more reliable nightly testing, and a codebase modernization that strengthens maintainability and onboarding. The work enhances CI reliability, reduces flakiness, and accelerates feedback loops for developers delivering verilog-to-routing features.
February 2025
13 Commits • 3 Features
Feb 1, 2025February 2025 focused on stabilizing and modernizing the NightlyTestManual CI workflow for verilog-to-routing/vtr-verilog-to-routing, delivering clearer developer guidance, more reliable nightly testing, and a codebase modernization that strengthens maintainability and onboarding. The work enhances CI reliability, reduces flakiness, and accelerates feedback loops for developers delivering verilog-to-routing features.
January 2025
5 Commits • 3 Features
Jan 1, 2025Concise monthly summary for 2025-01 focused on verilog-to-routing/vtr-verilog-to-routing: Implemented installation and CI improvements, fixed a critical segfault, and refreshed platform support. Delivered business value through easier onboarding, stable builds, and expanded testing coverage across platforms with updated documentation.
5 Commits • 3 Features
Jan 1, 2025Concise monthly summary for 2025-01 focused on verilog-to-routing/vtr-verilog-to-routing: Implemented installation and CI improvements, fixed a critical segfault, and refreshed platform support. Delivered business value through easier onboarding, stable builds, and expanded testing coverage across platforms with updated documentation.
January 2025
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Quality Metrics
Correctness94.6%
Maintainability92.8%
Architecture91.6%
Performance89.6%
AI Usage21.6%
Skills & Technologies
Programming Languages
BashCC++CMakeConfigurationDockerfileMakefileMarkdownNonePython
Technical Skills
API DesignAPI DocumentationAPI designAlgorithm DesignAlgorithm ImplementationAlgorithm OptimizationAlgorithm optimizationArchitecture DesignBug FixBug FixingBuild AutomationBuild ConfigurationBuild SystemBuild System ConfigurationBuild System Management
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