foggie-sims/foggie
Apr 2025 – Sep 2025
3 Months active
Languages Used
BashFortranPythonTexttext
Technical Skills
Astrophysics SimulationData AnalysisAstrophysicsConfiguration ManagementCosmological SimulationsData Engineering
Jason Tumlinson
PROFILE
Jason Tumlinson
During a three-month period, JT Umlins enhanced the foggie-sims/foggie repository by building features that improved data accessibility, portability, and quality for astrophysics simulations. JT introduced a new H2 numerical data root track at redshift z=2, enabling direct tabular analysis and supporting reproducible validation workflows. They standardized a 512^3 catalog across environments, updating Halo IC generation scripts to streamline deployment and collaboration. JT also addressed data ingestion reliability by scripting the removal of inconsistent header lines from root track files. Their work demonstrated proficiency in Python, Bash, and data engineering, with careful attention to version control and reproducibility.
Overall Statistics
Feature vs Bugs
89%Features
Repository Contributions
53Total
Bugs
1
Commits
53
Features
8
Lines of code
4,244,843
Activity Months3
Your Network
24 peopleSame Organization
@pfe20.nas.nasa.gov4
Work History
September 2025
1 Commits
Sep 1, 2025Month: 2025-09 (foggie-sims/foggie). Focused on data quality improvements in root track data handling. Key features delivered: - Root Track Data Header Line Removal to standardize data format for downstream processing. Major bugs fixed: - Removed the header line 'col1 col2 col3 col4 col5 col6 col7 col8' from root track files across halos 2392, 4123, 5016, 5036, 8508 (300 kpc box context). Overall impact: - Cleaner data ingestion, reduced downstream parsing errors, enabling more reliable analysis workflows and easier reproducibility. Technologies/skills demonstrated: - Scripting for mass file edits and data cleaning - Git/version control and traceability with explicit commit reference - Cross-halo data handling and an understanding of root track data structures
1 Commits
Sep 1, 2025Month: 2025-09 (foggie-sims/foggie). Focused on data quality improvements in root track data handling. Key features delivered: - Root Track Data Header Line Removal to standardize data format for downstream processing. Major bugs fixed: - Removed the header line 'col1 col2 col3 col4 col5 col6 col7 col8' from root track files across halos 2392, 4123, 5016, 5036, 8508 (300 kpc box context). Overall impact: - Cleaner data ingestion, reduced downstream parsing errors, enabling more reliable analysis workflows and easier reproducibility. Technologies/skills demonstrated: - Scripting for mass file edits and data cleaning - Git/version control and traceability with explicit commit reference - Cross-halo data handling and an understanding of root track data structures
September 2025
August 2025
51 Commits • 7 Features
Aug 1, 2025August 2025 performance summary: Focused on portability and scripting enhancements for the foggie repository. Delivered a standardized 512^3 catalog across the repo to improve cross-environment portability, and updated the Halo IC generation scripts to work with the new catalog, enabling more reproducible and scalable halo initialization for simulations. These changes reduce deployment friction, improve collaboration, and accelerate validation across clusters. No critical defects were reported this month; the emphasis was on strengthening tooling, consistency, and business value.
August 2025
51 Commits • 7 Features
Aug 1, 2025August 2025 performance summary: Focused on portability and scripting enhancements for the foggie repository. Delivered a standardized 512^3 catalog across the repo to improve cross-environment portability, and updated the Halo IC generation scripts to work with the new catalog, enabling more reproducible and scalable halo initialization for simulations. These changes reduce deployment friction, improve collaboration, and accelerate validation across clusters. No critical defects were reported this month; the emphasis was on strengthening tooling, consistency, and business value.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 (2025-04) monthly summary: Focused on extending data accessibility for Maelstrom in foggie-sims/foggie. Delivered a new H2 numerical data root track at redshift z=2, enabling tabular data analysis and improved validation of the simulation's behavior and evolution. The root track file supports easier data inspection for researchers and faster feedback in the analysis pipeline. Change captured in commit 69703af740650ca95c4a46f445250a32cbc6f812 with message 'root track for Maelstrom' to ensure traceability. This work demonstrates data engineering, version-control discipline, and readiness to integrate with downstream analytics tools, enhancing reproducibility and scientific insight.
1 Commits • 1 Features
Apr 1, 2025April 2025 (2025-04) monthly summary: Focused on extending data accessibility for Maelstrom in foggie-sims/foggie. Delivered a new H2 numerical data root track at redshift z=2, enabling tabular data analysis and improved validation of the simulation's behavior and evolution. The root track file supports easier data inspection for researchers and faster feedback in the analysis pipeline. Change captured in commit 69703af740650ca95c4a46f445250a32cbc6f812 with message 'root track for Maelstrom' to ensure traceability. This work demonstrates data engineering, version-control discipline, and readiness to integrate with downstream analytics tools, enhancing reproducibility and scientific insight.
April 2025
Activity
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Quality Metrics
Correctness99.6%
Maintainability99.6%
Architecture99.6%
Performance99.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
BashFortranPythonTexttext
Technical Skills
AstrophysicsAstrophysics SimulationConfiguration ManagementCosmological SimulationsData AnalysisData CleaningData EngineeringData ManagementHigh-Performance ComputingRepository ManagementScriptingdata managementscientific computing
Repositories Contributed To
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