August 2025: Key achievement for ACCESS-NRI/spack-packages was delivering OpenMPI integration for the UM package with build-time MPI configuration. OpenMPI is now an explicit dependency, enabling build-time configuration while deferring MPI version selection to the environment, which improves flexibility, portability, and manageability across clusters. This work reduces MPI-related configuration drift and lays groundwork for easier upgrades and reproducibility.

March 2025: Focused codebase cleanup and build-system modernization for CABLE-LSM/CABLE. Executed a substantial refactor to remove deprecated Fortran sources and reorganize the internal module layout, aligned with future feature development. Updated build configuration to reflect the new source tree (src/offline moved to src/shared), improving dependency management and build reliability. These changes reduce technical debt, accelerate onboarding, and set a solid foundation for subsequent features.

Month 2025-01 — CABLE-LSM/CABLE: Focused feature delivery improving PR governance through PR template enhancements for testing outputs and bitwise guidelines. Changes consolidated in two commits: a99993a50eb135e0a6b626b6b669c8c89c558da6 (Added details around benchcab outputs to the PR template. Fixes #517) and d593558a4c76be8c2c8b559f1b207fc4f3c2c185 (Update .github/pull_request_template.md). The work standardized bench/test output requirements, clarified bitwise testing expectations, and added evaluation sections for non-bitwise changes, improving review quality and consistency across code changes.

December 2024: Delivered the CABLE Library Variant Build Option in ACCESS-NRI/spack-packages, enabling a new 'library' variant to build the CABLE science library object. Updated the package definition and CMake arguments to conditionally define CABLE_LIBRARY based on the selected variant, improving build flexibility, reproducibility, and downstream integration. No major bugs fixed this month. Impact: provides a more flexible, reproducible build path for the CABLE library across HPC environments, reducing manual steps and enabling smoother integration into scientific workflows. Technologies/skills demonstrated: Spack packaging, variant-driven builds, CMake configuration, build system automation, and dependency management for scientific software.

November 2024 monthly summary for the CABLE-LSM/CABLE project focusing on delivering modularity, build-system modernization, and LUC integration. Key outcomes include clearer wetness initialization semantics, integrating land-use change capabilities, and enabling separate builds for the CABLE library and science library, all contributing to faster builds, easier maintenance, and stronger benchmarking readiness.