Euijun Chung

Hello! I’m Euijun (E - June) Chung, a third-year Ph.D. student in Computer Science at Georgia Tech. I am a member of the HPArch research group, advised by Dr. Hyesoon Kim. Before Georgia Tech, I received my B.S. in Electrical Engineering from KAIST in 2024, with a minor in Mathematical Sciences.

My research connects AI workloads with hardware and system design. I work across the stack to find and fix bottlenecks: GPU microarchitectural simulation, emerging GPU memory systems, heterogeneous CPU–GPU systems, and GPU reliability and security. I have also interned at Microsoft Research and AMD.

news

Sep 28, 2026	Our paper, Characterizing CPU-Induced Slowdowns in Multi-GPU LLM Inference, received the Best Paper Award at IISWC ‘26!
Sep 02, 2026	Our paper, Making Locality-aware GEMM Compatible with Page-Granularity Placement on Chiplet GPUs, has been accepted for publication in IEEE Computer Architecture Letters (CAL)!
Aug 31, 2026	The article I co-authored with Prof. Hyesoon Kim, Interrupting the One-Click Solution: In-Codebase AI Guardrails for GPU Programming, is featured in Georgia Tech’s 2026 Academic AI Playbook, launched as part of the Institute’s new Academic AI Strategy.
Aug 19, 2026	Our paper, Characterizing CPU-Induced Slowdowns in Multi-GPU LLM Inference, has been accepted to IISWC ‘26 and selected as a Best Paper Candidate! Our work was also featured in IEEE Spectrum.
Aug 10, 2026	I will be presenting our poster, A Fast Locality Simulator for GEMM Design-Space Exploration on Multi-Chiplet GPUs, at MODSIM 2026!
Feb 23, 2026	Our paper, TensorDynamic: Bridging Application- and Instruction-Level Fault Injection for DNN Tensor Core Execution, has been accepted to ISPASS ‘26!
Jan 24, 2026	I will be joining Microsoft Research as a research intern for Summer 2026!
Sep 03, 2025	I passed the CS Comparch Qual exam!
Aug 02, 2025	My personal webpage has been renewed!
Jul 23, 2025	Our paper, Swift and Trustworthy Large-Scale GPU Simulation with Fine-Grained Error Modeling and Hierarchical Clustering, has been accepted to MICRO ‘25!
May 19, 2025	I’ve started internship as a Research Associate at AMD RAD (Research Advancement and Development). Excited to be in the Bay Area for the summer!

selected publications

LLM Inference

Characterizing CPU-Induced Slowdowns in Multi-GPU LLM Inference

Euijun Chung, Yuxiao Jia, Aaron Jezghani, and 1 more author

In 2026 IEEE international symposium on workload characterization (IISWC), 2026

Best Paper Award

arXiv Bib PDF Slides IEEE Spectrum

@inproceedings{chung2026characterizing,
  title = {Characterizing CPU-Induced Slowdowns in Multi-GPU LLM Inference},
  author = {Chung, Euijun and Jia, Yuxiao and Jezghani, Aaron and Kim, Hyesoon},
  booktitle = {2026 IEEE international symposium on workload characterization (IISWC)},
  year = {2026},
  note = {Best Paper Award},
  organization = {IEEE},
}

GPU Simulation

Swift and Trustworthy Large-Scale GPU Simulation with Fine-Grained Error Modeling and Hierarchical Clustering

Euijun Chung, Seonjin Na, Sung Ha Kang, and 1 more author

In Proceedings of the 58th IEEE/ACM International Symposium on Microarchitecture, 2025

Bib PDF Slides

@inproceedings{chung2025swift,
  title = {Swift and Trustworthy Large-Scale GPU Simulation with Fine-Grained Error Modeling and Hierarchical Clustering},
  author = {Chung, Euijun and Na, Seonjin and Kang, Sung Ha and Kim, Hyesoon},
  booktitle = {Proceedings of the 58th IEEE/ACM International Symposium on Microarchitecture},
  pages = {1397--1411},
  year = {2025},
  artifact_available = {https://github.com/ejchung0406/STEM-AE},
  artifact_functional = {https://github.com/ejchung0406/STEM-AE}
}

GPU Memory Safety

Let-Me-In:(Still) Employing In-pointer Bounds Metadata for Fine-grained GPU Memory Safety

Jaewon Lee, Euijun Chung, Saurabh Singh, and 4 more authors

In 2025 IEEE International Symposium on High Performance Computer Architecture (HPCA), 2025

Bib PDF Slides

@inproceedings{lee2025let,
  title = {Let-Me-In:(Still) Employing In-pointer Bounds Metadata for Fine-grained GPU Memory Safety},
  author = {Lee, Jaewon and Chung, Euijun and Singh, Saurabh and Na, Seonjin and Kim, Yonghae and Lee, Jaekyu and Kim, Hyesoon},
  booktitle = {2025 IEEE International Symposium on High Performance Computer Architecture (HPCA)},
  pages = {1648--1661},
  year = {2025},
  organization = {IEEE},
}