ecmwf/eccodes
Nov 2024 – Apr 2025
3 Months active
Languages Used
CFortranC++Shell
Technical Skills
API DevelopmentC ProgrammingCode cleanupFortran ProgrammingFortran programmingMemory Management
plesskem
PROFILE
Plesskem
Marieke Plesske enhanced the ecmwf/eccodes repository by developing and refining Fortran APIs for efficient GRIB message handling, focusing on zero-copy techniques to improve memory usage and performance. She implemented new interfaces in C, C++, and Fortran, enabling direct message retrieval and construction from character and integer arrays, which streamlined cross-language workflows and reduced overhead in high-performance computing contexts. Marieke also addressed build reliability by fixing compilation issues and expanding automated Fortran testing, ensuring robust error handling and example coverage. Her work demonstrated depth in API design, low-level data management, and C/C++ interoperability, resulting in more maintainable and scalable code.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
6Total
Bugs
1
Commits
6
Features
4
Lines of code
410
Activity Months3
Your Network
81 people
Work History
April 2025
3 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for ecmwf/eccodes focusing on delivering cross-language GRIB access enhancements and robust Fortran examples.
3 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for ecmwf/eccodes focusing on delivering cross-language GRIB access enhancements and robust Fortran examples.
April 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for ecmwf/eccodes. Key accomplishments: Delivered a zero-copy Fortran API function new_from_message_no_copy_int4 to construct GRIB messages from 4-byte integer arrays, significantly reducing memory usage and increasing processing throughput for Fortran workloads. Implemented across header files, Fortran module procedures, and C++ sources to ensure cross-language compatibility. Commit 04e139e9f5dbaae5d9e3469deef22550fb512a0c documents the change. Impact: enables efficient handling of large GRIB datasets in Fortran-based workflows, improving HPC scalability. No major bugs fixed this month; feature-focused development and API enhancement. Technologies/skills demonstrated: Fortran API design, zero-copy memory management, cross-language integration (Fortran/C++), header/module interface updates.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for ecmwf/eccodes. Key accomplishments: Delivered a zero-copy Fortran API function new_from_message_no_copy_int4 to construct GRIB messages from 4-byte integer arrays, significantly reducing memory usage and increasing processing throughput for Fortran workloads. Implemented across header files, Fortran module procedures, and C++ sources to ensure cross-language compatibility. Commit 04e139e9f5dbaae5d9e3469deef22550fb512a0c documents the change. Impact: enables efficient handling of large GRIB datasets in Fortran-based workflows, improving HPC scalability. No major bugs fixed this month; feature-focused development and API enhancement. Technologies/skills demonstrated: Fortran API design, zero-copy memory management, cross-language integration (Fortran/C++), header/module interface updates.
November 2024
2 Commits • 1 Features
Nov 1, 2024Monthly summary for 2024-11 (ecmwf/eccodes). Focused on delivering enhancements to the GRIB Fortran API, improving interoperability with C and performance, along with code hygiene improvements in the same repository.
2 Commits • 1 Features
Nov 1, 2024Monthly summary for 2024-11 (ecmwf/eccodes). Focused on delivering enhancements to the GRIB Fortran API, improving interoperability with C and performance, along with code hygiene improvements in the same repository.
November 2024
Activity
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Quality Metrics
Correctness88.4%
Maintainability86.6%
Architecture83.4%
Performance81.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++FortranShell
Technical Skills
API DevelopmentC ProgrammingC++ DevelopmentC/C++ InteroperabilityCode cleanupError HandlingExample Code EnhancementFortran API DevelopmentFortran InterfaceFortran ProgrammingFortran programmingGRIB APILow-level Data HandlingMemory ManagementShell Scripting
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