Jonathan Lifflander
Senior Member Of The Technical Staff at Sandia National Laboratories
Champaign, Illinois, United States
Summary
🤩
Rockstar🎓
Top SchoolJonathan Lifflander is a Senior Member of the Technical Staff at Sandia National Laboratories with a PhD in Computer Science from UIUC and over a decade of experience in task-based programming models, language design, and scheduling algorithms. As PI of Sandia's DARMA project, he bridges research and production, driving execution-model innovation for high-performance computing. His open-source work includes substantive back-end contributions to the widely used Kokkos performance-portability ecosystem, where he refactored DynamicView and optimized memory management for cleaner, faster code. Jonathan combines deep academic grounding with hands-on systems engineering, routinely turning scheduling theory into scalable, maintainable implementations.
9 years of coding experience
7 years of employment as a software developer
University of Illinois Urbana-Champaign
Github Skills (9)
memory-management10
cluster-computing10
programming-language10
c-language10
parallel-computing10
cprogramming-language10
scientific-computing10
k10
abstraction9
Programming languages (7)
Github contributions (5)
kokkos/kokkos
Jun 2021 - Feb 2022
Kokkos C++ Performance Portability Programming Ecosystem: The Programming Model - Parallel Execution and Memory Abstraction
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 reviews, 18 commits, 7 PRs in 7 months
Contributions summary:Jonathan's primary focus was on refactoring and improving the `DynamicView` component within the Kokkos library. Their commits involved rewriting the `DynamicView` to remove dependencies and improve its efficiency and maintainability. They also addressed initialization order warnings, fixed typos in comments, and added comments, further demonstrating a focus on code quality. The user also refactored the `ChunkedArrayManager` and related memory management, optimizing memory access.
memorympic-plus-plusmulti-threadingkokkos
DARMA-tasking/check-pr-fixes-issue
Sep 2020 - Jul 2024
GitHub Action to validate if PR description contains phrase "Fixes #issue"
Contributions:9 reviews, 4 PRs, 4 pushes in 3 years 10 months
linterfixespr-descriptionvalidatephrase
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