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The Core (Compiler Optimization Research) Lab is a research lab led by professor Hanjun Kim in the School of Electrical and Electronic Engineering at Yonsei University. The focus of the CoreLab is the design of new compilers and computer systems to improve performance, power-efficiency and security without burdening application developers especially for distributed heterogeneous computer systems.


The Esperanto Project - A new IoT framework for manufacturers, programmers and users
The Internet of Things (IoT) enables new services such as smart home and smart healthcare by integrating diverse IoT devices. The Esperanto project proposes a novel IoT framework that allows manufacturers to easily develop various IoT devices and their APIs, programmers to easily integrate heterogeneous devices with right abstraction, and users to easily and safely control and customize the IoT devices and programs.

The Parallelization Project - New designs of domain specific accelerators and their compilers
As state-of-the-art smartphones, tablet, laptops and servers adopt multicore processors with GPUs and custom accelerators, computer systems become increasingly parallel and heterogeneous. The parallelization project investigates domain specific programs such as deep learning and scientific applications to find hardware acceleration opportunities, and proposes new hardware accelerators and their compilers.

The Security Project - Compiler and runtime systems for secure program execution
Computer systems are storehouses of personal information. As more and more personal data are stored in computer systems, and more and more computers are connected through the Internet, ensuring the confidentiality of the private data has become a critical problem. The Security project proposes a co-designed compiler and runtime system that securely protect private information in various computing environments.


  • February, 2024: Seonyoung Cheon, Yongwoo Lee, Dongkwan Kim, Ju Min Lee win the Silver Prize in 30th Humantech Paper Awards hosted by Samsung!

  • January, 2024: Yongwoo Lee wins the Excellent Academic Paper award in Yonsei University!

  • September, 2023: Yongwoo Lee, Seonyoung Cheon, Dongkwan Kim, Hoyun Youm win the Minister of Science and ICT Award in ICT Challenge hosted by the Ministry of Science and ICT!

  • August, 2022: Seonyeong Heo will join at Kyunghee University as an assistant professor in March 2023

  • February 26, 2020: Bongjun Kim wins the Silver Medal in the Graduate Student Research Competition at CGO 2020!

  • February 3, 2020: Seonyeong Heo wins the Best Poster Award at the 2020 KIISE Computer Systems Winter Workshop!

  • September 1, 2018: We are moving from POSTECH to Yonsei University. See you at Yonsei!

  • January 15, 2018: Seonyeong Heo wins the Best Poster Award at the 2018 KIISE Computer Systems Winter Workshop!

  • April 11, 2017: Bong Jun Hyun is awarded a Kwangjeong Lee, Chonghwan Educational Foundation (KEF) Graduate Scholarship!

  • March 25, 2015: Gwangmu Lee is awarded a Korea Foundation for Advanced Study (KFAS) Graduate Scholarship!

  • July 1, 2013: CoreLab begins at POSTECH.