
During October 2025, Arkadiusz Kiryk focused on stabilizing random number generation in the antmicro/verilator repository by addressing a bug affecting multi-process workflows. He implemented per-process random state management by introducing new C++ methods in VlProcess and updating both verilated.cpp and verilated_types.h, ensuring that each process maintains its own RNG state. These changes were integrated with SystemVerilog through updates in verilated_std.sv, allowing get_randstate to retrieve the correct state without impacting global RNG stability. By enhancing test determinism and reliability, Arkadiusz improved the robustness of software testing in Verilator, demonstrating depth in C++, SystemVerilog, and random number generation.
Month 2025-10 monthly summary focusing on key accomplishments, highlighting business value and technical achievements for antmicro/verilator. The primary deliverable this month was stabilizing RNG behavior in a multi-process Verilator workflow by implementing per-process random state management. This included adding new API methods and integrating them across C++ and SystemVerilog to ensure get_randstate retrieves the correct per-process state without disturbing global RNG stability.
Month 2025-10 monthly summary focusing on key accomplishments, highlighting business value and technical achievements for antmicro/verilator. The primary deliverable this month was stabilizing RNG behavior in a multi-process Verilator workflow by implementing per-process random state management. This included adding new API methods and integrating them across C++ and SystemVerilog to ensure get_randstate retrieves the correct per-process state without disturbing global RNG stability.

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