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Tom Augspurger

PROFILE

Tom Augspurger

Worked across RAPIDS and NVIDIA repositories to improve reliability, maintainability, and developer experience in distributed data science workflows. Delivered targeted bug fixes and features in Python, focusing on areas such as sparse array conversion in rapidsai/cuml, distributed computation correctness in rapidsai/cugraph, and benchmarking enhancements in mhaseeb123/cudf. Enhanced CI/CD pipelines in rapidsai/shared-workflows using GitHub Actions and YAML, and improved documentation clarity in NVIDIA/cuda-python. Addressed subtle issues like hash collisions and type annotation errors, strengthened test suites with stricter warning handling, and aligned code with upstream ecosystem changes, demonstrating depth in data engineering, testing, and workflow automation.

Overall Statistics

Feature vs Bugs

30%Features

Repository Contributions

10Total
Bugs
7
Commits
10
Features
3
Lines of code
341
Activity Months8

Work History

January 2026

1 Commits

Jan 1, 2026

January 2026: Implemented robust cuML deprecation handling and hardened the test suite for mhaseeb123/cudf by configuring pytest to treat warnings as errors, uncovering and addressing a resource leak and improving test reliability and maintainability. These changes reduce future breakage risks from cuML deprecations and strengthen CI gates, positively impacting production stability and downstream user confidence.

November 2025

1 Commits • 1 Features

Nov 1, 2025

November 2025: rapidsai/shared-workflows delivered a CI resilience enhancement by adding a continue-on-error input to the wheels-test workflow. This enables optional continuation of the pipeline on non-critical failures, reducing noise and accelerating feedback. No major bugs fixed this month. Impact: more reliable CI, faster wheels test iterations; Skills: GitHub Actions, YAML, CI/CD best practices.

August 2025

1 Commits

Aug 1, 2025

Monthly summary for 2025-08: NVIDIA/cuda-python focused on improving documentation quality for experimental API stabilization. Delivered a targeted documentation fix correcting a typo in api.rst related to the stabilization of experimental APIs. The change is captured in commit 33a11109369c10e7fc250508c2907fcaefff1048 (Update api.rst (#893)). This supports developer onboarding and reduces confusion around API stability messaging.

July 2025

1 Commits

Jul 1, 2025

July 2025: Delivered a critical correctness fix in the cudf DSL traversal module by correcting the type annotation for the 'state' parameter in make_recursive, ensuring proper type checking and covariance handling. This change reduces risk of type-related runtime errors in recursive traversal flows and strengthens downstream DSL features. Work completed in repo mhaseeb123/cudf and tied to commit f7aca052e5fa0c4c6cfd5b8fbdf1ee64f4b0c349 (#19294).

June 2025

1 Commits

Jun 1, 2025

June 2025 monthly work summary for mhaseeb123/cudf: Focused on reliability of the Streaming Executor. Delivered a targeted bug fix for hash collisions when Union uses MapFunction, preventing incorrect intermediate result reuse and streaming executor failures. The fix, committed as 8f3fd9205d79b33b523446e785b3cff7cf406d4a, hashes the child MapFunction instances to ensure unique identities, improving correctness and stability of streaming workloads. This work reduces runtime errors, strengthens pipeline reliability, and demonstrates proficiency in hashing strategies and MapFunction internals.

May 2025

2 Commits • 1 Features

May 1, 2025

May 2025 monthly overview of deliverables across rapidsai/cugraph and mhaseeb123/cudf. Key features/bugs addressed: 1) rapidsai/cugraph: fixed a distributed computation bug by removing the pure=False argument from client.compute calls in part_utils.py and simpleDistributedGraph.py, resolving CI failures (commit bcf1b7d8680d8cc5a0367aebe180472dadceccc2). 2) mhaseeb123/cudf: introduced PDSh Benchmark Tool explain plans on demand by enabling explain-only mode with --iterations=0 and refactoring execution logic to conditionally initialize GPUEngine (commit 3c14932f05b66fa3eda678090fb57f2446403b6a). Overall impact: increased reliability of distributed graph workloads, improved query analysis capabilities in benchmarking, and stronger debugging/diagnostic workflows. Technologies/skills demonstrated: Python, distributed systems concepts, GPUEngine usage, benchmarking tooling, and CI-focused debugging.

April 2025

1 Commits

Apr 1, 2025

April 2025 monthly summary for rapidsai/raft focusing on improving test configuration to reduce false positives and improve CI reliability. Delivered a targeted cleanup to remove an extraneous pytest.ini that shadowed the root config, resulting in cleaner test execution and more stable CI output.

March 2025

2 Commits • 1 Features

Mar 1, 2025

March 2025 performance summary: Delivered targeted improvements across RAPIDS libraries that boost reliability, clarity, and cross-tool interoperability. The work focuses on simplifying sparse array workflows and improving user-facing documentation, aligning with upstream ecosystem fixes to reduce maintenance burdens and user confusion. These changes enhance developer experience and position downstream apps to leverage upstream improvements in Dask and CuPy.

Activity

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Quality Metrics

Correctness91.0%
Maintainability92.0%
Architecture90.0%
Performance86.0%
AI Usage26.0%

Skills & Technologies

Programming Languages

INIMarkdownPythonYAMLreStructuredText

Technical Skills

CI/CDCUDFDaskData EngineeringData ScienceDistributed ComputingDocumentationGPU ComputingGitHub ActionsMachine LearningPerformance BenchmarkingPolarsPythonPython DevelopmentPython Scripting

Repositories Contributed To

7 repos

Overview of all repositories you've contributed to across your timeline

mhaseeb123/cudf

May 2025 Jan 2026
4 Months active

Languages Used

Python

Technical Skills

Performance BenchmarkingPython ScriptingQuery OptimizationCUDFData EngineeringPolars

rapidsai/cuml

Mar 2025 Mar 2025
1 Month active

Languages Used

Python

Technical Skills

Data ScienceDistributed ComputingGPU ComputingMachine Learning

rapidsai/rmm

Mar 2025 Mar 2025
1 Month active

Languages Used

Markdown

Technical Skills

Documentation

rapidsai/raft

Apr 2025 Apr 2025
1 Month active

Languages Used

INI

Technical Skills

CI/CDTesting

rapidsai/cugraph

May 2025 May 2025
1 Month active

Languages Used

Python

Technical Skills

DaskDistributed Computing

NVIDIA/cuda-python

Aug 2025 Aug 2025
1 Month active

Languages Used

reStructuredText

Technical Skills

documentationtechnical writing

rapidsai/shared-workflows

Nov 2025 Nov 2025
1 Month active

Languages Used

YAML

Technical Skills

CI/CDGitHub ActionsWorkflow Automation