Summary
I'm a fifth year PhD candidate in CSE at the University of Michigan. I build efficient software systems for deep learning, with a focus on the efficient management of not only time, but also energy.
I view power and energy as fundamental systems resources that are worth carefully optimizing and allocating, not only in hardware, but also from software. Doing so provides automatic downstream benefits, such as reducing operational expenses, alleviating power delivery pressure for the grid and datacenters, and allowing the hardware to truly max out on performance. My research and open-source works have been recognized and adoped by NVIDIA, Google, Microsoft, the Pytorch Foundation, and GitHub, among others.
I created and lead the ML.ENERGY initiative as part of my research and open-source efforts. I am fortunate to be advised by Professor Mosharaf Chowdhury and be part of SymbioticLab.
Selected Publications
GPU-to-Grid: Voltage Regulation via GPU Utilization Control
PowerUp, 2026
Cornserve: A Distributed Serving System for Any-to-Any Multimodal Models
ACM CAIS Demos, 2026
Where Do the Joules Go? Diagnosing Inference Energy Consumption
Preprint, 2026
Kareus: Joint Reduction of Dynamic and Static Energy in Large Model Training
OSDI (conditionally accepted), 2026
Cornfigurator: Automated Planning for Any-to-Any Multimodal Model Serving
Preprint, 2025
The ML.ENERGY Benchmark: Toward Automated Inference Energy Measurement and Optimization
NeurIPS D&B spotlight, 2025 (spotlight acceptance rate = 2.81%)
Perseus: Reducing Energy Bloat in Large Model Training
SOSP, 2024 (Acceptance rate = 17.34%)
Andes: Defining and Enhancing Quality-of-Experience in LLM-Based Text Streaming Services
Preprint, 2024
Zeus: Understanding and Optimizing GPU Energy Consumption of DNN Training
USENIX NSDI, 2023 (Acceptance rate = 18.38%)
Talks
- Energy
- MLSys
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- Poster
- Energy
- MLSys
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- Tutorial homepage (slides & recordings)
- Energy
- MLSys
- Energy
- MLSys
- Open-Source
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- Slides (Continuously updated)
- Energy
- MLSys
- Energy
- MLSys
Open-Source
- Python
- PyTorch
- Rust
- NVIDIA/AMD GPU
- RAPL
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- GitHub
- Docs
- Docker Hub
- Python
- PyTorch
- RecSys
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- GitHub
- Rust
- Tokio
- CLI
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- GitHub
Education
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PhD, Computer Science and EngineeringUniversity of MichiganSep 2021 - May 2027 (expected)
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MS, Computer Science and EngineeringUniversity of MichiganSep 2021 - Apr 2023
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BS, Electrical and Computer EngineeringSumma cum laudeSeoul National University, South KoreaMar 2015 - Aug 2021
Honors & Awards
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MLSys Rising StarsMLCommons MLSys Rising Stars 2026 cohort.April 2026
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Rackham Predoctoral FellowshipFull tuition and stipend for three terms.April 2026
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Laude Institute Slingshot Grant$25k USD for ML.ENERGY.Dec 2025
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GitHub Secure Open Source Fund$10k USD for Zeus.Aug 2025
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Mozilla Technology Fund$50k USD for Zeus.Feb 2024
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Salesforce Research Award$20k USD for ML.ENERGY.Jan 2024
Teaching
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Graduate Student Instructor. Three lectures on GenAI and Systems for GenAI fundamentals.Fall 2025
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Undergrad Operating SystemsLead TA. Linux kernel lectures, four Linux-based term projects, and team design reviews.Spring 2021
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Undergrad Computer ArchitecturePeer tutor. Gave 30 hours of online lecture. Best tutor award!Fall 2020
Community Service
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OrganizerSystems Reading Group in UMich CSESep 2022 - Dec 2025