xpsi-group/xpsi
Dec 2024 – Mar 2026
8 Months active
Languages Used
CCythonPythonRSTYAMLrst
Technical Skills
AstrophysicsAstrophysics SimulationBuild SystemsCode RefactoringConfiguration ManagementCython
Tuomo Salmi
PROFILE
Tuomo Salmi
T.H.J. Salmi contributed to the xpsi-group/xpsi repository by developing and refining astrophysical modeling features, focusing on reliability and scientific accuracy. Over eight months, Salmi implemented spherical star modeling, improved atmospheric simulation robustness, and enhanced likelihood estimation methods. Using Python, Cython, and CI/CD pipelines, Salmi addressed edge-case bugs such as division by zero in polarization calculations and clarified statistical normalization in likelihood functions. The work included refactoring integrators for maintainability, updating documentation for user onboarding, and aligning build systems for modern environments. Salmi’s contributions demonstrated depth in scientific computing, numerical methods, and release management, resulting in more robust research workflows.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
24Total
Bugs
9
Commits
24
Features
9
Lines of code
5,911
Activity Months8
Your Network
18 peopleSame Organization
@uva.nl4
Shared Repositories
14
Work History
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026 monthly wrap-up for xpsi-group/xpsi: Stakeholder-ready enhancements focusing on reliability, accuracy, and developer productivity. Implemented background limits for fast example scripts to prevent invalid parameter vectors from skewing likelihood calculations, with documentation updates and removal of redundant tutorials to streamline onboarding. Refactored cellmesh integrators to separate polarization angle and disk blocking, added unit tests for the new functions, and updated changelog/versioning to align with main branch. Addressed notable bugs in examples (including the no-disk-blocking case) and adjusted likelihood normalization sign, while restoring the image_order_limit default and removing debug prints. Release-readiness improvements include installation tweaks and version synchronization across branches.
2 Commits • 2 Features
Mar 1, 2026March 2026 monthly wrap-up for xpsi-group/xpsi: Stakeholder-ready enhancements focusing on reliability, accuracy, and developer productivity. Implemented background limits for fast example scripts to prevent invalid parameter vectors from skewing likelihood calculations, with documentation updates and removal of redundant tutorials to streamline onboarding. Refactored cellmesh integrators to separate polarization angle and disk blocking, added unit tests for the new functions, and updated changelog/versioning to align with main branch. Addressed notable bugs in examples (including the no-disk-blocking case) and adjusted likelihood normalization sign, while restoring the image_order_limit default and removing debug prints. Release-readiness improvements include installation tweaks and version synchronization across branches.
March 2026
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for xpsi-group/xpsi: Delivered a critical stability fix for polarization angle calculations when sin(psi) approaches zero, preventing division by zero and strengthening the robustness of the integration functions. The change was implemented as a targeted patch and accompanied by a version bump to reflect the critical fix. This work enhances reliability for downstream polarization analyses and reduces risk of incorrect results in edge-case scenarios.
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for xpsi-group/xpsi: Delivered a critical stability fix for polarization angle calculations when sin(psi) approaches zero, preventing division by zero and strengthening the robustness of the integration functions. The change was implemented as a targeted patch and accompanied by a version bump to reflect the critical fix. This work enhances reliability for downstream polarization analyses and reduces risk of incorrect results in edge-case scenarios.
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary for xpsi-group/xpsi focusing on correcting likelihood normalization and code cleanliness to improve accuracy, stability, and release readiness.
1 Commits
Sep 1, 2025September 2025 monthly summary for xpsi-group/xpsi focusing on correcting likelihood normalization and code cleanliness to improve accuracy, stability, and release readiness.
September 2025
August 2025
1 Commits • 1 Features
Aug 1, 2025Monthly work summary for 2025-08 focusing on delivering business value and technical improvements across the xpsi-group/xpsi repository. This month concentrated on updating Snellius job script instructions and dependencies to align with platform changes, improving user onboarding, reproducibility, and resource targeting.
August 2025
1 Commits • 1 Features
Aug 1, 2025Monthly work summary for 2025-08 focusing on delivering business value and technical improvements across the xpsi-group/xpsi repository. This month concentrated on updating Snellius job script instructions and dependencies to align with platform changes, improving user onboarding, reproducibility, and resource targeting.
May 2025
8 Commits • 1 Features
May 1, 2025Monthly summary for 2025-05 (repo: xpsi-group/xpsi) focusing on stability, release-readiness, and targeted feature work. The work improved CI reliability, reduced installation friction, and strengthened numerical robustness in atmospheric modeling, enabling smoother releases and more trustworthy results for users. What was delivered: - Strengthened testing and release readiness, including post-processing tests, Python 3.9 compatibility, CI/test path fixes, and preparation for a 3.1.0 release. - CI/CD environment fixes to ensure tests run against the correct environment (environment.yml) and updated CI workflow docs. - Dependency cleanup removing rayXpanda to simplify installation and build scripts without impacting core functionality. - Numerical and robustness improvements in atmospheric modeling, including bounds checks for temperature and logg in nsx loading and switching to approximate equality in Cython modules. Impact: - More reliable CI, faster and more predictable releases, and reduced risk in production environments. - Improved stability and accuracy in atmospheric computations, benefitting simulations and research workflows. - Clearer installation paths and documentation, easing onboarding for new users and contributors.
8 Commits • 1 Features
May 1, 2025Monthly summary for 2025-05 (repo: xpsi-group/xpsi) focusing on stability, release-readiness, and targeted feature work. The work improved CI reliability, reduced installation friction, and strengthened numerical robustness in atmospheric modeling, enabling smoother releases and more trustworthy results for users. What was delivered: - Strengthened testing and release readiness, including post-processing tests, Python 3.9 compatibility, CI/test path fixes, and preparation for a 3.1.0 release. - CI/CD environment fixes to ensure tests run against the correct environment (environment.yml) and updated CI workflow docs. - Dependency cleanup removing rayXpanda to simplify installation and build scripts without impacting core functionality. - Numerical and robustness improvements in atmospheric modeling, including bounds checks for temperature and logg in nsx loading and switching to approximate equality in Cython modules. Impact: - More reliable CI, faster and more predictable releases, and reduced risk in production environments. - Improved stability and accuracy in atmospheric computations, benefitting simulations and research workflows. - Clearer installation paths and documentation, easing onboarding for new users and contributors.
May 2025
March 2025
1 Commits
Mar 1, 2025March 2025 monthly summary for xpsi: Delivered a critical bug fix and documentation update to improve stability when time-invariant mode is enabled. The fix for time-invariant handling in Everywhere class (xpsi) and related background marginalization ensures correct behavior of phase bins and leaves, with the tutorial updated accordingly. Release v3.0.5 was tagged to reflect these changes (commit: d0ef043553e02ff63601497ff681dfc46a801f4a). Overall impact: increased reliability for time-invariant configurations, reduced user-reported edge-case errors, and clearer guidance for users and developers. Technologies demonstrated include debugging and root-cause analysis, Git-based version control, code-tuning in the Everywhere path, and documentation synchronization.
March 2025
1 Commits
Mar 1, 2025March 2025 monthly summary for xpsi: Delivered a critical bug fix and documentation update to improve stability when time-invariant mode is enabled. The fix for time-invariant handling in Everywhere class (xpsi) and related background marginalization ensures correct behavior of phase bins and leaves, with the tutorial updated accordingly. Release v3.0.5 was tagged to reflect these changes (commit: d0ef043553e02ff63601497ff681dfc46a801f4a). Overall impact: increased reliability for time-invariant configurations, reduced user-reported edge-case errors, and clearer guidance for users and developers. Technologies demonstrated include debugging and root-cause analysis, Git-based version control, code-tuning in the Everywhere path, and documentation synchronization.
January 2025
3 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for xpsi-group/xpsi. Focused on delivering user-value features, stabilizing the build pipeline, and clarifying edge-case behavior to improve robustness across environments. Key outcomes include an FAQ update to address import-order issues between pymultinest and numpy, a CI/build upgrade to GCC 12 and Python 3.12 for better compatibility, and a clarity fix for zero-count handling in Poisson likelihood with an accompanying changelog note. These changes reduce environment-related discrepancies, strengthen CI coverage, and improve the reliability of likelihood computations.
3 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for xpsi-group/xpsi. Focused on delivering user-value features, stabilizing the build pipeline, and clarifying edge-case behavior to improve robustness across environments. Key outcomes include an FAQ update to address import-order issues between pymultinest and numpy, a CI/build upgrade to GCC 12 and Python 3.12 for better compatibility, and a clarity fix for zero-count handling in Poisson likelihood with an accompanying changelog note. These changes reduce environment-related discrepancies, strengthen CI coverage, and improve the reliability of likelihood computations.
January 2025
December 2024
7 Commits • 3 Features
Dec 1, 2024December 2024 monthly performance summary for repository xpsi-group/xpsi. Focused on advancing realistic modeling capabilities, strengthening data visualization robustness, and improving build/install reliability, all while maintaining clear contributor documentation. Key outcomes include staged delivery of spherical star modeling, alignment of example scripts with the modeling tutorial, robust handling of zero-valued data in plots, and compatibility fixes for modern tooling and packaging.
December 2024
7 Commits • 3 Features
Dec 1, 2024December 2024 monthly performance summary for repository xpsi-group/xpsi. Focused on advancing realistic modeling capabilities, strengthening data visualization robustness, and improving build/install reliability, all while maintaining clear contributor documentation. Key outcomes include staged delivery of spherical star modeling, alignment of example scripts with the modeling tutorial, robust handling of zero-valued data in plots, and compatibility fixes for modern tooling and packaging.
Activity
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Quality Metrics
Correctness86.6%
Maintainability84.2%
Architecture80.0%
Performance74.2%
AI Usage20.8%
Skills & Technologies
Programming Languages
CCythonPythonRSTYAMLrst
Technical Skills
AstrophysicsAstrophysics SimulationBug FixingBuild System ConfigurationBuild SystemsCI/CDChangelog GenerationCode RefactoringConfigurationConfiguration ManagementCythonCython ProgrammingData AnalysisData ValidationData Visualization
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