January 2026 monthly summary for SWMF/SWMF: Focused on improving repository hygiene and maintainability with a targeted gitignore update. Delivered a single but impactful feature change to ensure non-source directories are not tracked, aligning with long-term codebase health and faster onboarding.

December 2025 monthly summary for SWMFsoftware/BATSRUS focused on improving output reliability, correctness, and efficiency for large-scale MPI runs. Implemented a consistent MPIIO output file naming scheme aligned with the number of processes, mitigated integer overflow risks in Tecplot writes, and added safeguards to skip unused blocks during MPIIO and Tecplot data writing. These changes enhance data integrity, scalability, and performance for HPC workflows, delivering measurable business value in post-processing reliability and resource utilization.

November 2025 monthly summary for SWMF software (SWMFsoftware/SWMF). Focused on enabling run-time coordinate synchronization for RIM and establishing robust two-way coupling with IPE, delivering concrete features and state management improvements that support more accurate, real-time data exchange and improve reliability across coupled components. The work emphasizes business value through improved simulation fidelity, stability, and maintainability, setting the stage for smoother integration with ESMF-based couplers.

October 2025 monthly summary across BATSRUS, SWMF, and share: Delivered key features, fixed major reliability bugs, and strengthened maintainability, driving improved accuracy, speed of analysis, and safer parallel execution.

2025-09 Monthly Summary: SWMF development across BATSRUS and share focused on scalable data I/O, GPU readiness, and reliability improvements. Key investments targeted data export performance, GPU porting groundwork, and robust formatting/compatibility that enable faster visualization, better scalability, and more maintainable code.

August 2025 performance summary for SWMF software development. Focused on delivering GPU-accelerated plotting capabilities, safer memory management for GPU workloads, and code quality improvements, while maintaining build stability. Progress on GPU paths lays groundwork for faster post-processing and scalable simulations; memory footprint reductions improve GPU-utilization and reliability on large runs; code refactors enhance long-term maintainability and persistence of critical data structures. A single build configuration bug fix in Makefile.test ensured more predictable builds and deployments.

July 2025 — SWMFsoftware/BATSRUS: Delivered GPU-focused optimization enhancements to reduce compute workload and data transfer overhead, enabling faster and more scalable simulations. The work includes conditional DomainVolume calculations to skip redundant GPU work, and targeted GPU-to-CPU data transfers for satellite outputs with improvements that extend to multi-GPU configurations.

June 2025: Achieved significant parallel I/O improvements across BATSRUS and the SWMF share components, delivering scalable MPI-IO support for IDL plot files, expanding MPI file opening and write interfaces, and correcting template I/O handling. These changes reduce I/O bottlenecks for large-scale simulations, improve reliability and test coverage, and lay groundwork for further performance optimizations.

May 2025 monthly summary focusing on key accomplishments across BATSRUS and share repositories. Key outcomes include significant enhancements to solar wind photoionization modeling and cross-platform Darwin build system improvements, driving both model accuracy and build reliability.

April 2025: Focused on stabilizing the SWMF test suite for SWMFsoftware/SWMF by aligning Test25 outputs with updated simulation parameters, ensuring reliable CI results, and reflecting the latest model configurations across test inputs and logs. The changes improve reproducibility of test outcomes and reduce maintenance overhead for upcoming PRs.

March 2025 performance review: Delivered targeted GPU-focused enhancements across BATSRUS, share, and SWMF to boost performance, reliability, and scalability of GPU-enabled simulations. Key outcomes include stabilizing AWSOM GPU test stability, enabling GPU execution of calc_heat_exchange, optimizing log transforms with robust limiter handling, and ensuring proper multi-node CUDA_VISIBLE_DEVICES for distributed GPU workloads, complemented by CME parameter initialization for AWSOM-R and formatting improvements for configuration readability.

Feb 2025 summary for SWMFsoftware BATSRUS and share: Delivered GPU-oriented performance improvements, robustness enhancements, and stability fixes that accelerate simulations on modern HPC systems and improve reliability of GPU workflows. Key features include GPU Performance Optimizations and OpenACC refinements; B0 source term for faster state updates; Electron energy term div(U)*Pe with configuration enablement; Solver robustness: iNewDecomposition propagation; and stability/telemetry enhancements: CPU/GPU synchronization before perturbations, AWSOM base grid revert, robust GPU lookup table copy with IsOnGPU flag, plus GMRES timing instrumentation.

January 2025 Delivered substantial GPU acceleration and code modernization across BATSRUS, SWMF/share, and SWMF, focused on enabling scalable, high-fidelity simulations and robust test coverage for fast-update paths. Key architectural improvements include GPU porting of core numerical routines, an OpenACC-based i_gang utility for conditional parallelism, and systematic code cleanups that reduce build warnings and improve readability. The month also closed a set of critical stability fixes and numerical corrections that ensure more reliable physics across AMR, turbulence, and CME workflows, setting the foundation for higher throughputs and more repeatable results.

Month: 2024-12 — Delivered a set of feature enhancements and stability improvements across BATSRUS and shared components, with a strong emphasis on business value through physics fidelity, GPU readiness, and improved testability. Key features include radiative cooling enhancements (CPU implementation with GPU porting prep and updated tests), integration of coronal heating and Alfven wave dissipation into the AWSOM GPU test workflow (with compatibility adjustments for wave pressure handling), electron entropy driven state updates (Se as the primary source term and alignment with existing calculations), and OpenACC-ready interpolation module improvements (removing non-OpenACC constructs and typing enhancements for potential GPU acceleration). A critical bug fix addressed the reconnection velocity calculation to ensure consistent initial velocity after density updates. Collection of changes span BATSRUS and shared components, laying groundwork for GPU-enabled simulations and more robust physics updates.

November 2024 BATSRUS monthly summary: - Delivered GPU-accelerated Heat Conduction core for non-Cartesian meshes with targeted memory usage refactors and GPU-compatible boundary handling, enabling accelerated execution for complex geometries. - Hardened numerical stability in PUI scalar advection by fixing index conditions to prevent NaN and instability, improving robustness across simulations. - Expanded test coverage with rotated Cartesian mesh validation for heat conduction, ensuring accuracy under varied grid geometries and shock positioning. - Maintained code health through cleanup of unused preprocessor directives, improving maintainability and readability of the codebase. - Overall impact: enhanced performance, reliability, and maintainability of heat conduction workflows on GPU-enabled runs, with validated test scenarios and clearer code structure.