January 2026 — GEOS-DEV/GEOS: GPU-oriented CI/CD improvements and security hardening delivered reliable GPU tests and improved pipeline security. Implemented support for deprecated CUDA driver on V100 GPUs to keep CI tests green, tightened Docker container certificate handling, and removed unnecessary CI variables. This set of changes improves stability for GPU-enabled builds and reduces security risk in CI/CD pipelines.

December 2025 (GEOS-DEV/GEOS) - Focus on reliability and CI stability with no new user-facing features delivered this month. Implemented two major bug fixes that improve error handling and CI robustness, directly supporting reduced risk in production and faster, conflict-free builds.

Month 2025-11 focused on codebase hygiene and maintainability for GEOS. Delivered targeted cleanup to remove unused sources and headers, reducing clutter and potential build-time overhead, setting the stage for faster feature work and easier onboarding.

October 2025 monthly summary for GEOS-DEV/GEOS: Key CI improvements to support fork contributions by removing the semantic_pull_request check, enabling the CI pipeline to run for all pull requests. The change also deactivated PR title convention enforcement to unblock workflows.

September 2025 performance snapshot: Delivered critical data-processing fixes and build-system enhancements across GEOS and related libraries, expanding cross-platform HPC readiness and business value. Key work includes a fracture-matrix mapping and mesh face-to-element handling fix to improve graph coloring reliability in complex meshes, expanded host build configurations to support newer compiler and CUDA versions, and ROCm-enabled Spack packaging with matrix and Tuolumne targets, alongside Lassen deprecation and Tuolumne TPL updates. These changes enhance data processing robustness, portability across environments, and scalability for HPC workloads.

Monthly summary for 2025-08 covering GEOS-DEV/thirdPartyLibs and GEOS. Focused on modernizing toolchains, streamlining CI/CD, and governance to improve build reliability and PR throughput. Key outcomes include Dane-based builds, clang-based DANE CI/CD integration, Docker/CUDA version updates, and CODEOWNERS updates. No major bugs fixed in this period; instead, we delivered configuration changes that reduce build risk and accelerate delivery.

July 2025: Focused on improving core stability and packaging reliability across GEOS and its Python packaging repo. Delivered a feature-level cleanup for GEOS bounds-check macros and compatibility, and stabilized the geosPythonPackages workflow by relaxing vtk dependency and restoring test failure handling. These changes reduce install-time friction, improve compiler compatibility, and strengthen CI/test resilience across the project.

June 2025 monthly summary for GEOS (GEOS-DEV/GEOS). Focused on strengthening build system resilience and environment consistency for multi-host scenarios. Delivered a new host configuration for Dane (clang 14.0.6), updated existing host configurations to reflect revised TPL paths, and extended Python bootstrap to ensure setuptools and wheel are installed during pip upgrades, reducing build-time issues and manual steps. These changes improve cross-host reliability, accelerate onboarding of new build hosts, and align packaging tooling with current Python ecosystems. The work is captured in commit ecadee4fc6238a42375100d03d096ea219197afb (chore: update LC builds #3708).

May 2025 monthly summary focusing on delivered features and bug fixes across GEOS-DEV/thirdPartyLibs and GEOS, highlighting business value, stability, and toolchain modernization. Key initiatives include upgrading the Lassen toolchain to GCC 12 and CUDA 12, aligning LLNL host configurations with updated third-party libraries, and extending solver configuration with a new XML attribute to control non-converged linear solver behavior via an hdf5_interface submodule update.

April 2025 monthly highlights for GEOS and dependencies focused on delivering safer core functionality, robust build tooling, and cross-platform compatibility. Key features delivered improved correctness and stability; major bugs fixed removed compile-time blockers; business value realized through more reliable releases and easier maintenance. Technologies and skills demonstrated spanned C++ template safety, build-system hardening, and cross-language tooling integration across two repositories.

March 2025: Focused on code quality and modeling accuracy in GEOS. Delivered friction model schema enhancements and comprehensive code cleanup, removing redundant constructors/destructors to reduce compiler warnings and improve maintainability. Updated default solver parameters and clarified aging vs slip laws to support accurate physics modeling and easier future experimentation. Commitment to performance, stability, and cleaner build health.

February 2025 Monthly Summary: Delivered targeted features and infrastructure improvements across GEOS-DEV/thirdPartyLibs, GEOS, and geosPythonPackages. Key outcomes include a SILO dependency upgrade, CI hardening and documentation organization, codebase standardization to improve safety and maintainability, and enhanced test failure visibility to speed debugging. These efforts strengthen stability, reduce CI risk, and deliver measurable business value through safer dependencies, more reliable builds, and clearer test diagnostics.

December 2024 monthly summary for GEOS-DEV/GEOS. Delivered focused improvements to ghost packing and topology handling, plus branding and repository housekeeping to align with TotalEnergies branding and maintenance practices. Key outcomes include cross-platform stability, improved packaging workflows, and a cleaner, more maintainable codebase. Highlights cover the Geos Ghost packing enhancements and the new ParallelTopologyChange refinement, macOS build stability fixes via static linking and re-enabled fixup steps for fault import inconsistencies, and branding/metadata cleanups across the repository.

Concise monthly summary for GEOS (Nov 2024): Delivered targeted refactors, documentation accuracy improvements, and stability fixes in the physics solver and IO paths. The work enhances maintainability, reliability, and maintainable test baselines across the solver stack.