exasim-project/NeoFOAM
Dec 2024 – Apr 2025
4 Months active
Languages Used
C++CMakecmake
Technical Skills
C++C++ DevelopmentCUDACompiler OptimizationFluid DynamicsKokkos
Gregor Weiss
PROFILE
Gregor Weiss
Gregor Weiss contributed to the exasim-project/NeoFOAM repository, focusing on performance and maintainability improvements for a high-performance computational fluid dynamics solver. Over four months, he enhanced both CPU and GPU execution paths by refactoring parallel loops for auto-vectorization, integrating Kokkos for GPU-accelerated Courant number calculations, and improving profiling support. Using C++, CUDA, and CMake, Gregor modernized code organization, introduced robust testing for numerical stability, and streamlined build system reliability by hardening ADIOS2 integration. His work addressed correctness issues, improved debugging, and ensured compatibility with parallel computing frameworks, resulting in faster runtimes, improved code quality, and more maintainable simulation workflows.
Overall Statistics
Feature vs Bugs
88%Features
Repository Contributions
22Total
Bugs
1
Commits
22
Features
7
Lines of code
583
Activity Months4
Your Network
24 people
Work History
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for exasim-project/NeoFOAM focused on stabilizing ADIOS2 integration within CPM.cmake-based builds. Implemented patch caching to avoid redundant patches and ensure correct handling of ADIOS2 dependencies when using the CPM.cmake package manager.
1 Commits
Apr 1, 2025April 2025 monthly summary for exasim-project/NeoFOAM focused on stabilizing ADIOS2 integration within CPM.cmake-based builds. Implemented patch caching to avoid redundant patches and ensure correct handling of ADIOS2 dependencies when using the CPM.cmake package manager.
April 2025
March 2025
8 Commits • 1 Features
Mar 1, 2025Month: 2025-03 – NeoFOAM performance and maintainability improvements focused on the Courant number calculation for the finite volume solver, along with code quality and test coverage enhancements. Delivered a dedicated Courant number module and a parallelFor-based computation path, including relocation of headers, build adjustments, and type/logging refinements to improve stability and readability. Added a unit test for maximum Courant, introduced clang-format cleanups, and updated the changelog to reflect performance/readability improvements. Reorganized data access, leveraged structured bindings and spans to modernize the codebase, and ensured const-correctness where applicable. Overall, these changes improve numerical stability, run-time performance on large-scale simulations, and long-term maintainability of the solver.
March 2025
8 Commits • 1 Features
Mar 1, 2025Month: 2025-03 – NeoFOAM performance and maintainability improvements focused on the Courant number calculation for the finite volume solver, along with code quality and test coverage enhancements. Delivered a dedicated Courant number module and a parallelFor-based computation path, including relocation of headers, build adjustments, and type/logging refinements to improve stability and readability. Added a unit test for maximum Courant, introduced clang-format cleanups, and updated the changelog to reflect performance/readability improvements. Reorganized data access, leveraged structured bindings and spans to modernize the codebase, and ensured const-correctness where applicable. Overall, these changes improve numerical stability, run-time performance on large-scale simulations, and long-term maintainability of the solver.
January 2025
7 Commits • 1 Features
Jan 1, 2025January 2025 monthly focus centered on ComputeCoNum robustness and performance enhancements for NeoFOAM, with targeted fixes, parallel framework alignment, and improved debugging and initialization to support reliable simulations and faster runs.
7 Commits • 1 Features
Jan 1, 2025January 2025 monthly focus centered on ComputeCoNum robustness and performance enhancements for NeoFOAM, with targeted fixes, parallel framework alignment, and improved debugging and initialization to support reliable simulations and faster runs.
January 2025
December 2024
6 Commits • 5 Features
Dec 1, 2024December 2024 highlights substantial performance and maintainability improvements for NeoFOAM across CPU and GPU execution paths, with a strong emphasis on measurable business value: faster runtimes, improved profiling and debuggability, and enhanced code quality.
December 2024
6 Commits • 5 Features
Dec 1, 2024December 2024 highlights substantial performance and maintainability improvements for NeoFOAM across CPU and GPU execution paths, with a strong emphasis on measurable business value: faster runtimes, improved profiling and debuggability, and enhanced code quality.
Activity
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Quality Metrics
Correctness88.6%
Maintainability90.0%
Architecture81.8%
Performance82.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMakecmake
Technical Skills
Build SystemBuild System ConfigurationC++C++ DevelopmentCMakeCUDACode FormattingCode OptimizationCode OrganizationCode RefactoringCompiler OptimizationComputational Fluid DynamicsDebuggingFinite Volume MethodFluid Dynamics
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