
Mark Kropf developed ARM64 platform support and cross-architecture compatibility for the RecoilEngine in the beyond-all-reason/spring repository. He focused on ensuring deterministic floating-point operations on ARM64, achieving bit-exact synchronization with the x86_64 build. Using C++ and CMake, Mark updated the build system to support ARM64, integrated SSE-to-NEON translation via sse2neon, and introduced ARM64-specific CPU topology detection and crash handling. He also established automated cross-architecture testing to maintain numerical parity and reliability. This work laid a robust foundation for broader ARM64 Linux deployment, demonstrating depth in cross-platform development and floating-point arithmetic within a complex codebase.
In March 2026, delivered ARM64 Platform Support and Cross-Architecture Compatibility for RecoilEngine in beyond-all-reason/spring. The work ensures deterministic floating-point operations on ARM64 with bit-exact synchronization to the x86_64 build, updates the build system for seamless ARM64 support, and establishes a foundation of cross-architecture testing to maintain parity across platforms. These changes position the product for broader deployment on ARM64 Linux with maintained numerical determinism and reliability.
In March 2026, delivered ARM64 Platform Support and Cross-Architecture Compatibility for RecoilEngine in beyond-all-reason/spring. The work ensures deterministic floating-point operations on ARM64 with bit-exact synchronization to the x86_64 build, updates the build system for seamless ARM64 support, and establishes a foundation of cross-architecture testing to maintain parity across platforms. These changes position the product for broader deployment on ARM64 Linux with maintained numerical determinism and reliability.

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