verilog-to-routing/vtr-verilog-to-routing
May 2025 – Jul 2026
11 Months active
Languages Used
C++RST
Technical Skills
Algorithm OptimizationFPGA PlacementFPGA DesignLegalizationPlace and RouteBLIF Parsing
haydar-c
PROFILE
Haydar-c
Worked extensively on the verilog-to-routing/vtr-verilog-to-routing repository, delivering features and fixes that improved FPGA placement, routing, and memory packing workflows. Leveraged C++ and algorithm optimization to enhance cluster density, implement priority queue–based molecule packing, and refine device sizing using RR graph data. Addressed reliability through robust signal handling, checkpointing, and early error detection in BLIF parsing, while also streamlining pin class data structures for better memory management. Contributed detailed documentation and code refactoring to clarify RAM packing, clustering, and pin assignment logic, supporting maintainability and onboarding. The work emphasized scalable design flows, efficient resource usage, and clear developer guidance.
Overall Statistics
Feature vs Bugs
72%Features
Repository Contributions
61Total
Bugs
5
Commits
61
Features
13
Lines of code
3,190
Activity Months11
Your Network
48 peopleShared Repositories
48
Andrew BoutrosMember
AlexandreSingerMember
alexpoupakisMember
Alireza AzadiMember
amin1377Member
Amir.AMember
Amir PooladMember
Amin MohagheghMember
Amin MohagheghMember
Work History
July 2026
5 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing focused on a major refactor of the pin class data structure and clock net handling. Delivered a vector-based input/output pin representation, streamlined memory usage, and improved performance in cluster feasibility, legalizer, and architecture graph modules. Documented future work to separate clock pins by their own class and utilization cap. This work reduces redundant passes and sets foundation for scalable routing of larger designs, delivering measurable business and technical value for larger, more complex netlists.
5 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing focused on a major refactor of the pin class data structure and clock net handling. Delivered a vector-based input/output pin representation, streamlined memory usage, and improved performance in cluster feasibility, legalizer, and architecture graph modules. Documented future work to separate clock pins by their own class and utilization cap. This work reduces redundant passes and sets foundation for scalable routing of larger designs, delivering measurable business and technical value for larger, more complex netlists.
July 2026
June 2026
18 Commits • 2 Features
Jun 1, 2026June 2026 performance summary for verilog-to-routing/vtr-verilog-to-routing: Delivered two major feature areas that improve device sizing accuracy, grid stability, and code maintainability, while enhancing debugging capabilities and developer onboarding. The work emphasizes business value through more reliable sizing, easier integration with external RR graphs, and clearer, well-documented code. Key outcomes include alignment of device size estimation with RR graph inputs, robust handling of external RR graphs, and improved pin class assignment workflows in pb_graph_node clusters, all supported by better docs and formatting.
June 2026
18 Commits • 2 Features
Jun 1, 2026June 2026 performance summary for verilog-to-routing/vtr-verilog-to-routing: Delivered two major feature areas that improve device sizing accuracy, grid stability, and code maintainability, while enhancing debugging capabilities and developer onboarding. The work emphasizes business value through more reliable sizing, easier integration with external RR graphs, and clearer, well-documented code. Key outcomes include alignment of device size estimation with RR graph inputs, robust handling of external RR graphs, and improved pin class assignment workflows in pb_graph_node clusters, all supported by better docs and formatting.
May 2026
2 Commits • 1 Features
May 1, 2026Month: 2026-05 - Focused on delivering memory packing improvements and codebase readability for verilog-to-routing/vtr-verilog-to-routing. Key work centered on RAM packing enhancements that incorporate partition region checks to ensure only compatible atoms are grouped into physical RAMs, improving memory efficiency and adherence to user constraints; plus a documentation bug fix to improve clarity in comments.
2 Commits • 1 Features
May 1, 2026Month: 2026-05 - Focused on delivering memory packing improvements and codebase readability for verilog-to-routing/vtr-verilog-to-routing. Key work centered on RAM packing enhancements that incorporate partition region checks to ensure only compatible atoms are grouped into physical RAMs, improving memory efficiency and adherence to user constraints; plus a documentation bug fix to improve clarity in comments.
May 2026
April 2026
6 Commits • 2 Features
Apr 1, 2026April 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on RAM cluster candidate handling improvements, alongside clarity and maintainability enhancements across molecule clustering workflows.
April 2026
6 Commits • 2 Features
Apr 1, 2026April 2026 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on RAM cluster candidate handling improvements, alongside clarity and maintainability enhancements across molecule clustering workflows.
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 focused on improving RAM packing clarity within the verilog-to-routing/vtr-verilog-to-routing project. Delivered documentation that clarifies the process of packing logical RAM into physical RAMs, emphasizing the order of atoms and the implications for data paths. This work reduces ambiguity in RAM inference and sets a solid foundation for future optimization and maintainability.
1 Commits • 1 Features
Mar 1, 2026March 2026 focused on improving RAM packing clarity within the verilog-to-routing/vtr-verilog-to-routing project. Delivered documentation that clarifies the process of packing logical RAM into physical RAMs, emphasizing the order of atoms and the implications for data paths. This work reduces ambiguity in RAM inference and sets a solid foundation for future optimization and maintainability.
March 2026
February 2026
14 Commits • 1 Features
Feb 1, 2026February 2026: Delivered a Priority Queue–based optimization path for molecule packing and cluster placement in verilog-to-routing/vtr-verilog-to-routing, along with a deterministic signal handler exit fix. The work emphasizes robust pruning of high-cost candidates, improved placement cost calculations, and inflight/tried workflow to reduce redundant attempts, while maintaining routing accuracy. This release enhances packing efficiency, reliability during interruptions, and maintainability through targeted refactors and documentation across the placement pipeline.
February 2026
14 Commits • 1 Features
Feb 1, 2026February 2026: Delivered a Priority Queue–based optimization path for molecule packing and cluster placement in verilog-to-routing/vtr-verilog-to-routing, along with a deterministic signal handler exit fix. The work emphasizes robust pruning of high-cost candidates, improved placement cost calculations, and inflight/tried workflow to reduce redundant attempts, while maintaining routing accuracy. This release enhances packing efficiency, reliability during interruptions, and maintainability through targeted refactors and documentation across the placement pipeline.
October 2025
4 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on reliability, maintainability, and documentation. Key efforts centered on robust signal handling, checkpointing, and feature documentation, with measurable business value in safer long-running workflows and clearer user guidance. Highlighted work improved resilience to interrupts, state recovery, and observability, while also clarifying how to leverage new features in design flows.
4 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on reliability, maintainability, and documentation. Key efforts centered on robust signal handling, checkpointing, and feature documentation, with measurable business value in safer long-running workflows and clearer user guidance. Highlighted work improved resilience to interrupts, state recovery, and observability, while also clarifying how to leverage new features in design flows.
October 2025
September 2025
8 Commits • 3 Features
Sep 1, 20252025-09 performance summary for verilog-to-routing/vtr-verilog-to-routing. Delivered three high-impact capabilities: (1) Enhanced neighbor clustering in full_legalizer to increase cluster density by relaxing the same-tile-type constraint; (2) Placement annealing improvements for manual moves to skip reinforcement learning updates not generated by the move generator and to check manual move options in the inner loop; (3) Router breakpoint handling and debugging enhancements to improve iteration reset logic, stage-aware breakpoint checks, early breakpoint expression validation, and general cleanup for more reliable routing pauses. These updates reduce debug cycles, improve routing quality, and reinforce the maintainability of the routing stack.
September 2025
8 Commits • 3 Features
Sep 1, 20252025-09 performance summary for verilog-to-routing/vtr-verilog-to-routing. Delivered three high-impact capabilities: (1) Enhanced neighbor clustering in full_legalizer to increase cluster density by relaxing the same-tile-type constraint; (2) Placement annealing improvements for manual moves to skip reinforcement learning updates not generated by the move generator and to check manual move options in the inner loop; (3) Router breakpoint handling and debugging enhancements to improve iteration reset logic, stage-aware breakpoint checks, early breakpoint expression validation, and general cleanup for more reliable routing pauses. These updates reduce debug cycles, improve routing quality, and reinforce the maintainability of the routing stack.
August 2025
1 Commits
Aug 1, 2025August 2025: Enhanced BLIF parsing reliability by introducing early validation of blackbox model existence during arch.xml processing, enabling faster detection of BLIF-architecture mismatches and clearer error reporting. This targeted change minimizes cascading parse errors and improves developer feedback during integration.
1 Commits
Aug 1, 2025August 2025: Enhanced BLIF parsing reliability by introducing early validation of blackbox model existence during arch.xml processing, enabling faster detection of BLIF-architecture mismatches and clearer error reporting. This targeted change minimizes cascading parse errors and improves developer feedback during integration.
August 2025
July 2025
1 Commits
Jul 1, 20252025-07: Focused on stabilizing the reconstruction legalizer in verilog-to-routing/vtr-verilog-to-routing. Delivered a critical bug fix to correctly skip I/O blocks during the 'Join with Neighbor' pass, with logging and block-state updates to prevent incorrect clustering. This work improves clustering accuracy, reduces downstream routing errors, and enhances overall pipeline reliability. Demonstrated strong debugging, code comprehension, and observability skills within the VTR project.
July 2025
1 Commits
Jul 1, 20252025-07: Focused on stabilizing the reconstruction legalizer in verilog-to-routing/vtr-verilog-to-routing. Delivered a critical bug fix to correctly skip I/O blocks during the 'Join with Neighbor' pass, with logging and block-state updates to prevent incorrect clustering. This work improves clustering accuracy, reduces downstream routing errors, and enhances overall pipeline reliability. Demonstrated strong debugging, code comprehension, and observability skills within the VTR project.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on performance improvements and observability. Implemented QP-Hybrid solver thresholding to skip nets with fanout above a defined limit and added solver statistics reporting for the number of ignored nets and the threshold value, enabling faster tuning and better diagnostics. This work enhances scalability for large designs and improves clear measurement of solver behavior, delivering clear business value through faster throughput and easier issue diagnosis.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for verilog-to-routing/vtr-verilog-to-routing focusing on performance improvements and observability. Implemented QP-Hybrid solver thresholding to skip nets with fanout above a defined limit and added solver statistics reporting for the number of ignored nets and the threshold value, enabling faster tuning and better diagnostics. This work enhances scalability for large designs and improves clear measurement of solver behavior, delivering clear business value through faster throughput and easier issue diagnosis.
May 2025
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Quality Metrics
Correctness91.4%
Maintainability88.8%
Architecture88.8%
Performance85.2%
AI Usage22.2%
Skills & Technologies
Programming Languages
C++RST
Technical Skills
Algorithm DesignAlgorithm OptimizationAnnealing AlgorithmBLIF ParsingC++C++ developmentC++ programmingCADCheckpointingClean CodeCode FormattingCode RefactoringCompiler DesignDebuggingDocumentation
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