ACCESS-NRI/spack-packages
Nov 2024 – Mar 2026
7 Months active
Languages Used
PythonYAML
Technical Skills
Package ManagementConfiguration Managementconfiguration managementdata integrationmodel optimizationBuild Systems
Paul Leopardi
PROFILE
Paul Leopardi
Worked extensively on the ACCESS-NRI/spack-packages repository, delivering new climate model variants, upgrading package versions, and enhancing build automation for high-performance computing workflows. Applied Python and YAML to implement Spack-based packaging, configuration management, and CI/CD pipelines, ensuring reproducible installations and robust dependency handling. Addressed critical issues by refining compiler flags, stabilizing repository access, and migrating build processes to GitHub for improved traceability. Integrated new data sources and standardized configurations to optimize model performance and maintainability. Collaborated on CI enhancements, version control, and boundary condition tooling, resulting in streamlined deployments and reliable, maintainable infrastructure for climate modeling research environments.
Overall Statistics
Feature vs Bugs
78%Features
Repository Contributions
10Total
Bugs
2
Commits
10
Features
7
Lines of code
7,861
Activity Months7
Your Network
70 peopleWork History
March 2026
3 Commits • 2 Features
Mar 1, 2026Summary for 2026-03: Implemented end-to-end packaging and build automation for ACCESS-NRI climate modeling stack, delivering reproducible Spack-based installation manifests, build scripts, and CI pipelines. Also introduced version tracing and GitHub-based builds for GCOM/UM components, including boundary condition tooling to improve reproducibility and issue diagnosis. Overall, enhanced installation reliability, faster onboarding, and stronger cross-component integration.
3 Commits • 2 Features
Mar 1, 2026Summary for 2026-03: Implemented end-to-end packaging and build automation for ACCESS-NRI climate modeling stack, delivering reproducible Spack-based installation manifests, build scripts, and CI pipelines. Also introduced version tracing and GitHub-based builds for GCOM/UM components, including boundary condition tooling to improve reproducibility and issue diagnosis. Overall, enhanced installation reliability, faster onboarding, and stronger cross-component integration.
March 2026
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for ACCESS-NRI/spack-packages focusing on CI/build configuration enhancements for GCOM to improve reliability, visibility, and maintainability of the package builds.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for ACCESS-NRI/spack-packages focusing on CI/build configuration enhancements for GCOM to improve reliability, visibility, and maintainability of the package builds.
December 2025
1 Commits • 1 Features
Dec 1, 2025In December 2025, completed essential packaging upgrades in ACCESS-NRI/spack-packages, delivering new UM package versions (13.7–13.9) and updating GCom to 8.4 to improve compatibility, stability, and downstream support. This work positions the repo for smoother deployments and future feature rollouts.
1 Commits • 1 Features
Dec 1, 2025In December 2025, completed essential packaging upgrades in ACCESS-NRI/spack-packages, delivering new UM package versions (13.7–13.9) and updating GCom to 8.4 to improve compatibility, stability, and downstream support. This work positions the repo for smoother deployments and future feature rollouts.
December 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for ACCESS-NRI/spack-packages focused on stabilizing UM model packaging and strengthening dependency management in Spack to deliver reliable, reproducible build environments for JULES/UM configurations. Implemented a critical bug fix to remove the -V flag from Fortran compiler flags, preventing interference with the Spack compiler wrapper and ensuring correct compilation. Performed a Spack packaging refactor to improve dependency handling by switching from tag-based variants to ref variants, adopting HTTPS for GitHub URLs, and updating compiler flags and source paths for vn13p1-am.
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for ACCESS-NRI/spack-packages focused on stabilizing UM model packaging and strengthening dependency management in Spack to deliver reliable, reproducible build environments for JULES/UM configurations. Implemented a critical bug fix to remove the -V flag from Fortran compiler flags, preventing interference with the Spack compiler wrapper and ensuring correct compilation. Performed a Spack packaging refactor to improve dependency handling by switching from tag-based variants to ref variants, adopting HTTPS for GitHub URLs, and updating compiler flags and source paths for vn13p1-am.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for ACCESS-NRI/spack-packages. Focused on expanding the UM vn13p5-rns model data source coverage by adding new source configurations to improve performance and accuracy, aligned with the existing u-by395/nci_access_ram3 baseline for consistency. Delivered via a single commit that extends the model configuration (6154b74e33002c0a8ab2922a258386ee449941cc). This work enhances data ingestion, reduces data gaps, and supports more reliable model outputs. No major bugs fixed this month; stability improvements achieved through config validation and integration testing.
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for ACCESS-NRI/spack-packages. Focused on expanding the UM vn13p5-rns model data source coverage by adding new source configurations to improve performance and accuracy, aligned with the existing u-by395/nci_access_ram3 baseline for consistency. Delivered via a single commit that extends the model configuration (6154b74e33002c0a8ab2922a258386ee449941cc). This work enhances data ingestion, reduces data gaps, and supports more reliable model outputs. No major bugs fixed this month; stability improvements achieved through config validation and integration testing.
July 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary: Delivered a new ACCESS-AM model variant vn13p1-am to the UM package within the ACCESS-NRI/spack-packages repository. Implemented a dedicated configuration file and updated the package definition; standardized source configurations for the AM3 model to improve consistency and maintainability. No bug fixes were recorded this period. Overall impact: expands deployment capabilities, enhances reproducibility, and reduces integration effort for researchers deploying the ACCESS-AM variant in HPC workflows. Demonstrated technologies and skills include Spack packaging, git-based versioning, and configuration management for HPC software, with emphasis on modular variant support and metadata hygiene.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary: Delivered a new ACCESS-AM model variant vn13p1-am to the UM package within the ACCESS-NRI/spack-packages repository. Implemented a dedicated configuration file and updated the package definition; standardized source configurations for the AM3 model to improve consistency and maintainability. No bug fixes were recorded this period. Overall impact: expands deployment capabilities, enhances reproducibility, and reduces integration effort for researchers deploying the ACCESS-AM variant in HPC workflows. Demonstrated technologies and skills include Spack packaging, git-based versioning, and configuration management for HPC software, with emphasis on modular variant support and metadata hygiene.
November 2024
1 Commits
Nov 1, 2024November 2024 monthly summary focused on stabilizing repository access for ACCESS-NRI/spack-packages by reverting the Gcom4 repository remote URL to HTTPS, addressing a recent SSH change. This fix prevents upstream fetch failures, supports consistent builds, and maintains CI/reproducibility across environments. No new features were released this month; the primary deliverable was a critical bug fix that safeguarded downstream workflows and deployment pipelines.
1 Commits
Nov 1, 2024November 2024 monthly summary focused on stabilizing repository access for ACCESS-NRI/spack-packages by reverting the Gcom4 repository remote URL to HTTPS, addressing a recent SSH change. This fix prevents upstream fetch failures, supports consistent builds, and maintains CI/reproducibility across environments. No new features were released this month; the primary deliverable was a critical bug fix that safeguarded downstream workflows and deployment pipelines.
November 2024
Activity
Loading activity data...
Quality Metrics
Correctness93.0%
Maintainability92.0%
Architecture92.0%
Performance91.0%
AI Usage22.0%
Skills & Technologies
Programming Languages
PythonYAML
Technical Skills
Build SystemsCI/CDCompiler FlagsConfiguration ManagementContinuous IntegrationDevOpsPackage ManagementPythonPython developmentSpack package managementclimate modelingconfiguration managementdata integrationdependency managementfull stack development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline