cp2k/cp2k
Dec 2024 – Jul 2025
3 Months active
Languages Used
FortranShellinp
Technical Skills
Code DocumentationBuild ScriptingBuild System ConfigurationCode CleanupCode RefactoringDependency Management
Johann Pototschnig
PROFILE
Johann Pototschnig
Johannes Pototschnig contributed to the cp2k/cp2k repository by developing features that enhance computational chemistry workflows and code maintainability. He implemented space group detection and printing during optimization, introducing the SHOW_SPACE_GROUP keyword and integrating this capability into multiple optimizers, with comprehensive tests to ensure correctness. His work included integrating TBLITE into the build system, updating installation scripts, and refining toolchain management to improve reproducibility and onboarding. Using Fortran and shell scripting, Johannes focused on code formatting, documentation clarity, and dependency management, resulting in a cleaner, more maintainable codebase that supports robust scientific computing and reduces user setup complexity.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
9Total
Bugs
0
Commits
9
Features
4
Lines of code
531
Activity Months3
Your Network
50 people
Work History
July 2025
2 Commits • 2 Features
Jul 1, 2025Month: 2025-07 – Delivered key symmetry verification enhancements for cp2k/cp2k and improved code quality. Major work includes Space Group Detection and Printing during Optimization, introducing the SHOW_SPACE_GROUP keyword and integrating space group identification/printing into the BFGS, CG, and LBFGS optimizers. Added tests to validate the feature and ensure robust behavior across optimization paths. Also performed code formatting and readability cleanup across Fortran sources and input configuration files to standardize style and reduce maintenance risk. No major bugs fixed this month; stability improvements came from targeted refactors and expanded test coverage. Overall impact: improved correctness and user confidence in symmetry properties, with a cleaner, more maintainable codebase that supports future optimizer enhancements.
2 Commits • 2 Features
Jul 1, 2025Month: 2025-07 – Delivered key symmetry verification enhancements for cp2k/cp2k and improved code quality. Major work includes Space Group Detection and Printing during Optimization, introducing the SHOW_SPACE_GROUP keyword and integrating space group identification/printing into the BFGS, CG, and LBFGS optimizers. Added tests to validate the feature and ensure robust behavior across optimization paths. Also performed code formatting and readability cleanup across Fortran sources and input configuration files to standardize style and reduce maintenance risk. No major bugs fixed this month; stability improvements came from targeted refactors and expanded test coverage. Overall impact: improved correctness and user confidence in symmetry properties, with a cleaner, more maintainable codebase that supports future optimizer enhancements.
July 2025
May 2025
6 Commits • 1 Features
May 1, 2025In May 2025, delivered TBLITE integration into CP2K with build-system integration, installation script updates, and targeted code cleanups to ensure reliable installation, easier toolchain configuration, and improved cross-profile build compatibility. Fixed critical toolchain issues to improve reproducibility and onboarding, including removal of MPI compiler from the toolchain and deactivation of TBLITE for Spack, along with targeted installation fixes. This work enhances maintainability of the CP2K build tooling and reduces setup time for users across profiles.
May 2025
6 Commits • 1 Features
May 1, 2025In May 2025, delivered TBLITE integration into CP2K with build-system integration, installation script updates, and targeted code cleanups to ensure reliable installation, easier toolchain configuration, and improved cross-profile build compatibility. Fixed critical toolchain issues to improve reproducibility and onboarding, including removal of MPI compiler from the toolchain and deactivation of TBLITE for Spack, along with targeted installation fixes. This work enhances maintainability of the CP2K build tooling and reduces setup time for users across profiles.
December 2024
1 Commits • 1 Features
Dec 1, 2024In December 2024, cp2k/cp2k delivered a cosmetic yet impactful improvement: the Grimme D4 method status is clarified by removing the 'experimental feature under development' remark. This communicates stability to users without changing functionality, improving documentation clarity and user trust.
1 Commits • 1 Features
Dec 1, 2024In December 2024, cp2k/cp2k delivered a cosmetic yet impactful improvement: the Grimme D4 method status is clarified by removing the 'experimental feature under development' remark. This communicates stability to users without changing functionality, improving documentation clarity and user trust.
December 2024
Activity
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Quality Metrics
Correctness91.2%
Maintainability93.4%
Architecture91.2%
Performance84.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
FortranShellinp
Technical Skills
Build ScriptingBuild System ConfigurationCode CleanupCode DocumentationCode FormattingCode IntegrationCode RefactoringComputational ChemistryConfiguration ManagementDependency ManagementFortran DevelopmentMemory ManagementReadability ImprovementScientific ComputingShell Scripting
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