GEOS-DEV/GEOS
Oct 2024 – Aug 2025
5 Months active
Languages Used
C++CMake
Technical Skills
C++ DevelopmentMemory ManagementPhysics SimulationLoggingSoftware DevelopmentC++
Stefano Frambati
PROFILE
Stefano Frambati
Worked on the GEOS-DEV/GEOS repository, delivering features and fixes for advanced wave propagation and seismic imaging workflows. Developed Discontinuous Galerkin discretization using Bernstein-Bézier tetrahedra and integrated it into the finite element framework, enabling flexible acoustic wave simulations. Enhanced Reverse Time Migration by adding imaging condition modes and attenuation modeling for more realistic subsurface analysis. Improved reliability through memory management fixes and thread-safe data output in high-performance computing environments. Introduced log-level-based timestep logging to streamline observability and debugging. Leveraged C++, CMake, and numerical methods throughout, demonstrating depth in parallel computing, finite element methods, and physics simulation within production codebases.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
6Total
Bugs
2
Commits
6
Features
4
Lines of code
5,122
Activity Months5
Your Network
17 peopleSame Organization
@totalenergies.com2
Shared Repositories
15
Work History
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for GEOS-DEV/GEOS. Key feature delivered: Discontinuous Galerkin discretization on Bernstein-Bézier tetrahedra for the acoustic wave propagator using SIPDG, with new element formulations and solver integration into the existing finite element framework. This enables more flexible and accurate wave simulations across complex meshes.
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for GEOS-DEV/GEOS. Key feature delivered: Discontinuous Galerkin discretization on Bernstein-Bézier tetrahedra for the acoustic wave propagator using SIPDG, with new element formulations and solver integration into the existing finite element framework. This enables more flexible and accurate wave simulations across complex meshes.
August 2025
May 2025
2 Commits • 2 Features
May 1, 2025May 2025 monthly summary for GEOS-DEV/GEOS. Focused on advancing RTM capabilities and wave-propagation realism with attenuation modeling. Key accomplishments include feature delivery for RTM imaging condition mode and attenuation in acoustic solvers, with commits linked to issues (#3667, #3398). These changes improve RTM accuracy, imaging fidelity, and the realism of forward/backward simulations, enabling better subsurface characterization and decision-making.
May 2025
2 Commits • 2 Features
May 1, 2025May 2025 monthly summary for GEOS-DEV/GEOS. Focused on advancing RTM capabilities and wave-propagation realism with attenuation modeling. Key accomplishments include feature delivery for RTM imaging condition mode and attenuation in acoustic solvers, with commits linked to issues (#3667, #3398). These changes improve RTM accuracy, imaging fidelity, and the realism of forward/backward simulations, enabling better subsurface characterization and decision-making.
March 2025
1 Commits
Mar 1, 2025March 2025 (2025-03) GEOS monthly summary for GEOS-DEV/GEOS: Delivered a critical thread-safety bug fix in Geophone data output and improved data integrity. Implemented atomic updates and guarded logic for the receiverIsLocal flag to eliminate race conditions. Added a safe initialization path for Geophone when DAS is inactive to prevent generation of empty files. The changes increase reliability of multi-threaded data capture, reduce potential data loss, and improve operational stability in production. Commit 35a789a454d5e96a75fa608a695c2edf0607bdf5 (Added atomics and a condition to avoid inconsistency of receiverIsLocal flag (#3593)).
1 Commits
Mar 1, 2025March 2025 (2025-03) GEOS monthly summary for GEOS-DEV/GEOS: Delivered a critical thread-safety bug fix in Geophone data output and improved data integrity. Implemented atomic updates and guarded logic for the receiverIsLocal flag to eliminate race conditions. Added a safe initialization path for Geophone when DAS is inactive to prevent generation of empty files. The changes increase reliability of multi-threaded data capture, reduce potential data loss, and improve operational stability in production. Commit 35a789a454d5e96a75fa608a695c2edf0607bdf5 (Added atomics and a condition to avoid inconsistency of receiverIsLocal flag (#3593)).
March 2025
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 GEOS development monthly summary focused on improving observability and maintainability by introducing a log-level-based approach for timestep summary logging in the GEOS repository. The change reduces log noise by enabling severity-based filtering while preserving essential information during timestep completion. No major bug fixes were identified or completed this month. The deliverables support faster debugging, better production monitoring, and lower operational overhead, aligning with reliability and efficiency goals.
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 GEOS development monthly summary focused on improving observability and maintainability by introducing a log-level-based approach for timestep summary logging in the GEOS repository. The change reduces log noise by enabling severity-based filtering while preserving essential information during timestep completion. No major bug fixes were identified or completed this month. The deliverables support faster debugging, better production monitoring, and lower operational overhead, aligning with reliability and efficiency goals.
October 2024
1 Commits
Oct 1, 2024In 2024-10, addressed memory-management risk in SEM wave equation solvers by removing redundant freeOnDevice calls for m_sourceCoordinates and m_receiverCoordinates, ensuring proper deallocation and stability. Implemented via commit 9ee88f74b9ecc99a8176c325be86ed32143f7a80 (refs #3409). This change reduces memory corruption risk and potential crashes in production physics solvers, improving reliability of the GEOS SEM workflows.
1 Commits
Oct 1, 2024In 2024-10, addressed memory-management risk in SEM wave equation solvers by removing redundant freeOnDevice calls for m_sourceCoordinates and m_receiverCoordinates, ensuring proper deallocation and stability. Implemented via commit 9ee88f74b9ecc99a8176c325be86ed32143f7a80 (refs #3409). This change reduces memory corruption risk and potential crashes in production physics solvers, improving reliability of the GEOS SEM workflows.
October 2024
Activity
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Quality Metrics
Correctness90.0%
Maintainability86.6%
Architecture85.0%
Performance83.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMake
Technical Skills
C++C++ DevelopmentDiscontinuous Galerkin (DG)Finite Element MethodFinite Element Method (FEM)High-Performance ComputingHigh-Performance Computing (HPC)LoggingMemory ManagementNumerical MethodsParallel ComputingPhysics SimulationReverse Time MigrationSeismic ImagingSoftware Development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline