Jeongseob Ahn (안정섭)

Associate Professor @ Korea University

School of Electrical Engineering (Computer Division)

Research Group: Computer Systems Laboratory

E-mail: jsahn [AT] csl.korea.ac.kr

Tel: +82-2-3290-3229

Office: New Engineering Building #518

Accelerating Page Migrations in Operating Systems with Intel DSA

Jongho Baik, Jonghyeon Kim, Chang Hyun Park, and Jeongseob Ahn

IEEE Computer Architecture Letters (CAL), January 2025

Interference-Aware DNN Serving on Heterogeneous Processors in Edge Systems [ Paper ]

Yeonjae Kim, Igjae Kim, Kwanghoon Choi, Jeongseob Ahn, Jongse Park, and Jaehyuk Huh

IEEE International Conference on Computer Design (ICCD), November 2024

EnvPipe: Performance-preserving DNN Training Framework for Saving Energy [ Paper | Slides | Video | Code ]

Sangjin Choi, Inhoe Koo, Jeongseob Ahn, Myeongjae Jeon, and Youngjin Kwon

USENIX Annual Technical Conference (ATC), July 2023

Fast and Efficient Model Serving Using Multi-GPUs with Direct-Host-Access [ Paper | Slides | Code ]

Jinwoo Jeong, Seungsu Baek, and Jeongseob Ahn

ACM European Conference on Computer Systems (EuroSys), May 2023

Gilles Muller Best Artifact Award

Memory Harvesting in Multi-GPU Systems with Hierarchical Unified Virtual Memory [ Paper | Slides | Video | Code ]

Sangjin Choi, Taeksoo Kim, Jinwoo Jeong, Rachata Ausavarungnirun, Myeongjae Jeon, Youngjin Kwon, and Jeongseob Ahn

USENIX Annual Technical Conference (ATC), July 2022

Rethinking Remote Memory Placement on Large-Memory Systems with Path Diversity [ Paper | Slides ]

Wonkyo Choe, Sang-Hoon Kim, and Jeongseob Ahn

ACM SIGOPS Asia-Pacific Workshop on Systems (APSys), August 2021

Exploring the Design Space of Page Management for Multi-Tiered Memory Systems [ Paper | Slides | Video | Code ]

Jonghyeon Kim, Wonkyo Choe, and Jeongseob Ahn

USENIX Annual Technical Conference (ATC), July 2021

Zico: Efficient GPU Memory Sharing for Concurrent DNN Training [ Paper | Slides | Video ]

Gangmuk Lim, Jeongseob Ahn, Wencong Xiao, Youngjin Kwon, and Myeongjae Jeon

USENIX Annual Technical Conference (ATC), July 2021

A Study of Memory Placement on Hardware-assisted Tiered Memory Systems [ Paper | Video ]

Wonkyo Choe, Jonghyeon Kim, and Jeongseob Ahn

IEEE Computer Architecture Letters (CAL), 19(2), July-December 2020

Reconciling Time Slice Conflicts of Virtual Machines with Dual Time Slice for Clouds [ Paper ]

Taeklim Kim, Chang Hyun Park, Jaehyuk Huh, and Jeongseob Ahn

IEEE Transactions on Parallel and Distributed Systems (TPDS), 31(10), October 2020

Caliper: Interference Estimator for Multi-tenant Environments Sharing Architectural Resources [ Paper ]

Ram Srivatsa Kannan, Michael Laurenzano, Jeongseob Ahn, Jason Mars, and Lingjia Tang

ACM Transactions on Architecture and Code Optimization (TACO), 16(3), May 2019

GrandSLAm: Guaranteeing SLAs for Jobs in Microservices Execution Frameworks [ Paper | Slides | Video ]

Ram Srivatsa Kannan, Lavanya Subramanian, Ashwin Raju, Jeongseob Ahn, Jason Mars, and Lingjia Tang

ACM European Conference on Computer Systems (EuroSys), March 2019

Accelerating Critical OS Services in Virtualized Systems with Flexible Micro-sliced Cores [ Paper | Slides | Video | Code ]

Jeongseob Ahn, Chang Hyun Park, Taekyung Heo, and Jaehyuk Huh

ACM European Conference on Computer Systems (EuroSys), April 2018

Enhancing DRAM Self-Refresh Modes for Idle Power Reduction [ Paper ]

Byoungchan Oh, Nilmini Abeyratne, Jeongseob Ahn, Ronald Dreslinski, and Trevor Mudge

IEEE International Symposium on Low Power Electronics and Design (ISLPED), August 2016

Fast Two-level Address Translation for Virtualized Systems [ Paper ]

Jeongseob Ahn, Seongwook Jin, and Jaehyuk Huh

IEEE Transactions on Computers (TC), 64(10), December 2015

H-SVM: Hardware-assisted Secure Virtual Machines under a Vulnerable Hypervisor [ Paper ]

Seongwook Jin, Jeongseob Ahn, Jinho Seol, Sanghoon Cha, Jaehyuk Huh, and Seungryoul Maeng

IEEE Transactions on Computers (TC), 64(10), October 2015

Micro-sliced Virtual Processors to Hide the Effect of Discontinuous CPU Availability for Consolidated Systems [ Paper | Slides ]

Jeongseob Ahn, Chang Hyun Park, and Jaehyuk Huh

IEEE/ACM International Symposium on Microarchitecture (MICRO), December 2014

Subspace Snooping: Exploiting Temporal Sharing Stability for Snoop Reduction [ Paper ]

Jeongseob Ahn, Daehoon Kim, Jaehong Kim, and Jaehyuk Huh

IEEE Transactions on Computers (TC), 61(11), November 2012

Revisiting Hardware-Assisted Page Walks for Virtualized Systems [ Paper | Slides ]

Jeongseob Ahn, Seongwook Jin, and Jaehyuk Huh

ACM/IEEE International Symposium on Computer Architecture (ISCA), June 2012

Dynamic Virtual Machine Scheduling in Clouds for Architectural Shared Resources [ Paper | Slides | Code ]

Jeongseob Ahn, Changdae Kim, Jaeung Han, Young-ri Choi, and Jaehyuk Huh

USENIX Workshop on Hot Topics in Cloud Computing (HotCloud), June 2012

Architectural Support for Secure Virtualization under a Vulnerable Hypervisor [ Paper ]

Seongwook Jin, Jeongseob Ahn, Sanghoon Cha, and Jaehyuk Huh

IEEE/ACM International Symposium on Microarchitecture (MICRO), December 2011

Subspace Snooping: Filtering Snoops with Operating System Support [ Paper ]

Daehoon Kim, Jeongseob Ahn, Jaehong Kim, and Jaehyuk Huh

ACM/IEEE/IFIP International Conference on Parallel Architectures and Compilation Techniques (PACT), September 2010

Accelerating Page Migrations in Operating Systems with Intel DSA

Jongho Baik, Jonghyeon Kim, Chang Hyun Park, and Jeongseob Ahn

IEEE Computer Architecture Letters (CAL), January 2025

Interference-Aware DNN Serving on Heterogeneous Processors in Edge Systems [ Paper ]

Yeonjae Kim, Igjae Kim, Kwanghoon Choi, Jeongseob Ahn, Jongse Park, and Jaehyuk Huh

IEEE International Conference on Computer Design (ICCD), November 2024

EnvPipe: Performance-preserving DNN Training Framework for Saving Energy [ Paper | Slides | Video | Code ]

Sangjin Choi, Inhoe Koo, Jeongseob Ahn, Myeongjae Jeon, and Youngjin Kwon

USENIX Annual Technical Conference (ATC), July 2023

Fast and Efficient Model Serving Using Multi-GPUs with Direct-Host-Access [ Paper | Slides | Code ]

Jinwoo Jeong, Seungsu Baek, and Jeongseob Ahn

ACM European Conference on Computer Systems (EuroSys), May 2023

Gilles Muller Best Artifact Award

Rethinking DRAM's page mode with STT-MRAM [ Paper ]

Byoungchan Oh, Nilmini Abeyratne, Nam Sung Kim, Jeongseob Ahn, Ronald Dreslinski, and Trevor Mudge

IEEE Transactions on Computers (TC), 72(5), May 2023

Server Load and Network-aware Adaptive Deep Learning Inference Offloading for Edge Platforms [ Paper ]

Jungmo Ahn, Youngki Lee, Jeongseob Ahn, and JeongGil Ko

Elsevier Internet of Things (IoT), 21, April 2023

Memory Harvesting in Multi-GPU Systems with Hierarchical Unified Virtual Memory [ Paper | Slides | Video | Code ]

Sangjin Choi, Taeksoo Kim, Jinwoo Jeong, Rachata Ausavarungnirun, Myeongjae Jeon, Youngjin Kwon, and Jeongseob Ahn

USENIX Annual Technical Conference (ATC), July 2022

Rethinking Remote Memory Placement on Large-Memory Systems with Path Diversity [ Paper | Slides ]

Wonkyo Choe, Sang-Hoon Kim, and Jeongseob Ahn

ACM SIGOPS Asia-Pacific Workshop on Systems (APSys), August 2021

Exploring the Design Space of Page Management for Multi-Tiered Memory Systems [ Paper | Slides | Video | Code ]

Jonghyeon Kim, Wonkyo Choe, and Jeongseob Ahn

USENIX Annual Technical Conference (ATC), July 2021

Zico: Efficient GPU Memory Sharing for Concurrent DNN Training [ Paper | Slides | Video ]

Gangmuk Lim, Jeongseob Ahn, Wencong Xiao, Youngjin Kwon, and Myeongjae Jeon

USENIX Annual Technical Conference (ATC), July 2021

A Study of Memory Placement on Hardware-assisted Tiered Memory Systems [ Paper | Video ]

Wonkyo Choe, Jonghyeon Kim, and Jeongseob Ahn

IEEE Computer Architecture Letters (CAL), 19(2), July-December 2020

Reconciling Time Slice Conflicts of Virtual Machines with Dual Time Slice for Clouds [ Paper ]

Taeklim Kim, Chang Hyun Park, Jaehyuk Huh, and Jeongseob Ahn

IEEE Transactions on Parallel and Distributed Systems (TPDS), 31(10), October 2020

LightCert: On Designing a Lighter Certificate for Resource-limited Internet of Things Devices [ Paper ]

Hyuksang Kwon, Jeongseob Ahn, and JeongGil Ko

Transactions on Emerging Telecommunications Technologies (ETT), 30(10), September 2019

Caliper: Interference Estimator for Multi-tenant Environments Sharing Architectural Resources [ Paper ]

Ram Srivatsa Kannan, Michael Laurenzano, Jeongseob Ahn, Jason Mars, and Lingjia Tang

ACM Transactions on Architecture and Code Optimization (TACO), 16(3), May 2019

GrandSLAm: Guaranteeing SLAs for Jobs in Microservices Execution Frameworks [ Paper | Slides | Video ]

Ram Srivatsa Kannan, Lavanya Subramanian, Ashwin Raju, Jeongseob Ahn, Jason Mars, and Lingjia Tang

ACM European Conference on Computer Systems (EuroSys), March 2019

A Load Balancing Technique for Memory Channels

Byoungchan Oh, Nam Sung Kim, Jeongseob Ahn, Bingchao Li, Ronald Dreslinski, and Trevor Mudge

International Symposium on Memory Systems (MEMSYS), October 2018

Deduplicating TLB Entries for Shared Pages [ Paper ]

Jeongseob Ahn

IEICE Electronics Express (ELEX), 15(14), July 2018

Accelerating Critical OS Services in Virtualized Systems with Flexible Micro-sliced Cores [ Paper | Slides | Video | Code ]

Jeongseob Ahn, Chang Hyun Park, Taekyung Heo, and Jaehyuk Huh

ACM European Conference on Computer Systems (EuroSys), April 2018

How Much Computation Power do you need for Near-Data Processing in Cloud? [ Paper ]

Namhyung Kim, Jeongseob Ahn, Sungpack Hong, Hassan Chafi, and Kiyoung Choi

Workshop on Architectures and Systems For Big Data (ASBD), June 2017

Enhancing DRAM Self-Refresh Modes for Idle Power Reduction [ Paper ]

Byoungchan Oh, Nilmini Abeyratne, Jeongseob Ahn, Ronald Dreslinski, and Trevor Mudge

IEEE International Symposium on Low Power Electronics and Design (ISLPED), August 2016

Fast Two-level Address Translation for Virtualized Systems [ Paper ]

Jeongseob Ahn, Seongwook Jin, and Jaehyuk Huh

IEEE Transactions on Computers (TC), 64(10), December 2015

H-SVM: Hardware-assisted Secure Virtual Machines under a Vulnerable Hypervisor [ Paper ]

Seongwook Jin, Jeongseob Ahn, Jinho Seol, Sanghoon Cha, Jaehyuk Huh, and Seungryoul Maeng

IEEE Transactions on Computers (TC), 64(10), October 2015

Micro-sliced Virtual Processors to Hide the Effect of Discontinuous CPU Availability for Consolidated Systems [ Paper | Slides ]

Jeongseob Ahn, Chang Hyun Park, and Jaehyuk Huh

IEEE/ACM International Symposium on Microarchitecture (MICRO), December 2014

Subspace Snooping: Exploiting Temporal Sharing Stability for Snoop Reduction [ Paper ]

Jeongseob Ahn, Daehoon Kim, Jaehong Kim, and Jaehyuk Huh

IEEE Transactions on Computers (TC), 61(11), November 2012

Revisiting Hardware-Assisted Page Walks for Virtualized Systems [ Paper | Slides ]

Jeongseob Ahn, Seongwook Jin, and Jaehyuk Huh

ACM/IEEE International Symposium on Computer Architecture (ISCA), June 2012

Dynamic Virtual Machine Scheduling in Clouds for Architectural Shared Resources [ Paper | Slides | Code ]

Jeongseob Ahn, Changdae Kim, Jaeung Han, Young-ri Choi, and Jaehyuk Huh

USENIX Workshop on Hot Topics in Cloud Computing (HotCloud), June 2012

Architectural Support for Secure Virtualization under a Vulnerable Hypervisor [ Paper ]

Seongwook Jin, Jeongseob Ahn, Sanghoon Cha, and Jaehyuk Huh

IEEE/ACM International Symposium on Microarchitecture (MICRO), December 2011

Subspace Snooping: Filtering Snoops with Operating System Support [ Paper ]

Daehoon Kim, Jeongseob Ahn, Jaehong Kim, and Jaehyuk Huh

ACM/IEEE/IFIP International Conference on Parallel Architectures and Compilation Techniques (PACT), September 2010

The Effect of Multi-core on HPC Applications in Virtualized Systems [ Paper ]

Jaeung Han, Jeongseob Ahn, Changdae Kim, Youngjin Kwon, Young-ri Choi, and Jaehyuk Huh

Workshop on Virtualization and High-Performance Cloud Computing (VHPC), August 2010