Application-aware System Optimization Lab

Welcome to Application-aware System Optimization Lab

The Application-aware System Optimization Lab is a research lab led by professor Yongjun Park at Yonsei University. The focus of our research group is Compiler/OS/Architecture level solutions for Performance, Energy-efficiency on AI/Big Data Processing/IOT/HPC devices (ILP (VLIW, CGRA), DLP (SIMD, GPU), Neural accelerators, PIM, ISP, and heterogeneous systems).

Research Goal: Platform-specific System Design for Emerging Applications

Specific Projects

1. Compiler optimization for deep learning/big data processing (approximate computing, sparse matrix multiplication, ...) on NPUs/PIM devices/GPUs

2. Efficient multitasking support for multiple GPU/CPU/NPU/PIM programs on heterogeneous architectures

3. Neural accelerator design and compiler/OS support 

4. Near-data processing: Processing-in-memory (PIM), In-storage processing (ISP)

Required Skill Set: Compilers, Computer architectures, OS

News

* August 2025 - Congratulations! A collaboration work has been accepted from CIKM'25 as a full research paper! (BK21+ IF 3) 

* July 2025 - Congratulations! Jeehyun Kim, Donghyeon Kim, Seokwon Kang, Inho Lee's work on  "PIM-CCA: An Efficient PIM Architecture with Optimized Integration of Configurable Functional Units" has been accepted from MICRO'25! (BK21+ IF 4) 

* July 2025 – Congratulations to Taejun Ryu for receiving the Outstanding Paper Award at KCC 2025!

* June 2025 -  Prof. Park successfully served as the Program Committee Chair of LCTES 2025. (BK21+ IF 2).

* June 2025 - Congratulations! Inho Lee, Jaemin Park's work on  "Efficient Image Super-Resolution Using Dynamic Quality Control with Recursive Model Structures" has been accepted from IEEE Access! (SCIE) 

* June 2025 - Congratulations to Seok Namkoong who had a great presentation of his "SortingHat: System Topology-aware Scheduling of Deep Neural Network Models on Multi-GPU Systems" work at ICS'25 (Salt Lake City, U.S.A.)!

* June 2025 - Congratulations to Donghyeon Kim who had a great presentation of his "PIM-CARE: A Compiler-Assisted Dynamic Resource Allocation Framework for Real-world DRAM PIM" work at ICS'25 (Salt Lake City, U.S.A.)!

* April 2025 - Congratulations! Seok Namkoong, Taehyeong Park, Kiung Jung, Jinyoung Kim's work on  "SortingHat: System Topology-aware Scheduling of Deep Neural Network Models on Multi-GPU Systems" has been accepted from ICS'25! (BK21+ IF 2)

* April 2025 - Congratulations! Inyong Hwang, Donghyeon Kim, Seokwon Kang, Taehyeong Park, Taehoon Kim's work on  "PIM-CARE: A Compiler-Assisted Dynamic Resource Allocation Framework for Real-world DRAM PIM" has been accepted from ICS'25! (BK21+ IF 2)

* April 2025 - Congratulations! A collaboration work has been accepted from DAC'25 as a full research paper! (BK21+ IF 3) 

* March 2025 - Prof. Park is invited to serve on the program committee for PACT 2025.

* March 2025 - Prof. Park is invited to serve on the external review committee for MICRO 2025.

* March 2025 - Congratulations to Hyeoncheol Kim who had a great presentation of his "Accelerating LLMs using an Efficient GEMM Library and Target-Aware Optimizations on Real-World PIM Devices" work at CGO'25 (Las Vegas)!

* March 2025 - Congratulations to Yoon Noh Lee who had a great presentation of his "CUrator: An Efficient LLM Execution Engine with Optimized Integration of CUDA Libraries" work at CGO'25 (Las Vegas)!

* January 2025 - Congratulations! Yoon Noh, Yongseung's work on  "An Efficient LLM Execution Engine with Optimized Integration of CUDA Libraries on GPUs" has been accepted from CGO'25! (BK21+ IF 2)

* January 2025 - Congratulations! Hyeoncheol, Taehoon, Taehyeong, Donghyeon, Yongseung's work on  "An Efficient LLM Execution Engine on Real-World PIM Devices" has been accepted from CGO'25! (BK21+ IF 2)

* December 2024 - Prof. Park is invited to serve on the program committee chair for LCTES 2025.

* June 2024 - Congratulations to Kiung Jung who had a great presentation of his "Scheduling of Multiple Mixed-precision Models " work at LCTES'24 (Copenhagen, Denmark)!

* April 2024 - Congratulations! Kiung, Seok, Hongjun, Hyejun's work on multiple mixed precision model Scheduling on a shared precision-scalable NPU has been accepted from LCTES'24 as a full research paper! (BK21+ IF 2)

* March 2024 - Congratulations to Younghyun Lee who had a great presentation of his "Graph-based Fused-convolution Scheduling" work at DATE'24 (Valencia)!

* November 2023 - Congratulations! Younghyun, Hyejun, Yongseung's work on multi-core NPU scheduling has been accepted from DATE'24 as a research paper! (BK21+ IF 2) 

* November 2023 - Congratulations! Seokwon, Jeongmyung's work on an in-storage processing framework has been accepted from ACM TACO as a research paper! (SCIE)

* November 2023 - Congratulations to Yongseung Yu who had a great presentation of his "CUTLASS-tailor" work at ICCD'23 (Washington DC, USA)!

* October 2023 - Congratulations to Donghyeon Kim who had a great presentation of his "VirtualPIM" work at PACT'23 (Vienna, Austria)!

*  October 2023 - Congratulations! Yongseung, Yeonghyun, Giha's work on CUTLASS performance prediction has been accepted from ICCD'23 as a full research paper! (BK21+ IF 1) 

* August 2023 - Congratulations! Donghyeon, Taehoon, Inyong, Taehyeong's work on multiple PIM workload allocation has been accepted from PACT'23 as a full research paper! (BK21+ IF 3) 

* August 2023 - Congratulations! A collaboration work has been accepted from CIKM'23 as a full research paper! (BK21+ IF 3) 

* June 2023 - Congratulations to Joonho Won who had a great presentation of his "SyncNAS" work at LCTES'23 (Orlando)!

* May 2023 - Congratulations! Beom Woo, Junho, Seongju's work on Synchronization-aware NAS (neural architecture search) on Mobile Platforms has been accepted from LCTES'23 as a full research paper! (BK21+ IF 2)

* April 2023 - Congratulations to Seokho Lee who had a great presentation of his "Block Group Scheduling" work at DATE'23 (Antwerp)!

* April 2023 - Congratulations to Taehyeong Park  who had a great presentation of his "Dynamic Block Distributor" work at ICDE'23 (Anaheim)!

* February 2023 - Congratulations! Taehyeong, Seokwon's work on large-scale  sparse matrix multiplication optimization has been accepted from ICDE'23 as a full research paper! (BK21+ IF 3)

* February 2023 - Congratulations! Seokho, Younghyun, Hyejun, Taehoon's work on precision-scalable NPU scheduling has been accepted from DATE'23 as a research paper! (BK21+ IF 2) 

* October 2021 - Congratulations to Seongju Lee  who had a great presentation of the ICCD paper! (virtual conference)!

* August 2021 - Congratulations! Kyung hwan and Seongju's work on grouped neural execution has been accepted from ICCD'21 as a research paper! (BK21+ IF 1) 

* December 2020 - Congratulations to Seok-Won Kang who has been awarded a 2020 NAVER Ph.D. Fellowship Award. NAVER Ph.D. Fellowship Award supports outstanding doctoral students!

* July 2020 - Congratulations to Speakers  who had great presentations of their DAC papers! (virtual conference)!

* April 2020 - Congratulations! Yongseung, Giha's work on neural network training optimization has been accepted from DAC'20 as a research paper! (BK21+ IF 3) 

* April 2020 - Congratulations! Jiho's work on GPU multitasking has been accepted from DAC'20 as a research paper! (BK21+ IF 3) 

* April 2020 - Congratulations to Jeongmyung Lee  who had a great presentation of his "Block Reorganizer" work at ICDE'20 (Dallas, virtual conference)!

* April 2020 - Congratulations! Jeongmyung's work on sparse matrix multiplication optimization has been accepted from ICDE'20 as a full research paper! (BK21+ IF 3) 

* February 2020 - Congratulations to Seok-Won Kang  who had a great presentation of his "PreScaler" work at CGO'20 (San Diego)!

* December 2019 - Congratulations to Yongseung Yu, Giha Ryu, Jeongmyung Lee, and Yangki Lee who had papers on KSC 2019! 

* June 2019 - Congratulations to Yongseung Yu who had a great presentation of his "CTA-limiter" work at LCTES'19 (Phoenix)!

* June 2019 - Congratulations to Seok-Won Kang  who had a great presentation of his "GATE" work at DAC'19 (Las Vegas)!

* December 2017 - Congratulations to Seongmin Hong, Jehee Cha, and Inho Lee who received the 1st award in the 2017 Intel FPGA Design Contest!

* December 2016 - Congratulations to Seongmin Hong, Jaehyung Im, and Inho Lee who received the 2nd award in the 2016 ALTERA Design Contest.

Now, we are looking for enthusiastic students:

Graduate Students (M.S. and Ph.D. students)

We are always looking for outstanding graduate students in the areas of computer architecture, compilers, OS, and design automation. Interested students should send me an email (yongjunpark at yonsei.ac.kr) with your resume and a short description of your background and interests .

Undergraduate Students (Interns)

We like to encourage undergraduates to get involved with research, especially if they intend to go to graduate school. We work with a small number of excellent undergraduate students each semester. Students should be strong C++ programmers, knowledge of computer architecture, and have a basic familiarity with compilers and OS. 

Interested students should send me an email (yongjunpark at yonsei.ac.kr) or drop by Engineering Building 4, D913.