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Hobin Yoon is a Ph.D. student in the College of Computing at the Georgia Institute of Technology, advised by Dr. Karsten Schwan. Prior to joining Georgia Tech, he was a Senior Researcher at Samsung Electronics from 2005 to 2010 and a Senior Engineer at Thinkware Systems from 2001 to 2005. He earned his BS and MS in Computer Engineering from Seoul National University. Hobin's research interests center on operating systems and distributed systems. He is currently exploring cloud storage management systems with virtualization technology.

My research interests center around distributed systems, operating systems, and virtualization.

Current research interests are on cloud storage management systems. The first one is FleCS, a flexible cloud storage management system. It is motivated by Amazon S3’s inflexibility of "Bucket"; it provides only preconfigured replication factors on specific geometric locations. FleCS provides storage containers that can be individually configured by attributes of data. Examples of the attributes include: temporary/persistent storages, hot/cold data storages, n-replication storages, and multi-datacenter storages. FleCS provides plugin APIs for implementing these attributes. I have implemented a prototype of FleCS in an experimental cluster of nodes virtualized with Xen hypervisor. FleCS will be deployed to the OpenCirrus cloud infrastructure.

Another ongoing research is providing fair sharing of storage bandwidth among multiple cloud applications when they share storage nodes. Current solutions control each virtual machine’s IO scheduler or network traffic, which provide only per-node fairness. Our approach considers aggregated bandwidth of applications across multiple nodes with a distributed global resource manager.

• Interactive Use of Cloud Services: Amazon SQS and S3, Hobin Yoon, Jim Donahue, Ada Gavrilovska, Karsten Schwan, CCGrid 2012, Ottawa, Canada, May 2012.
• Distributed Cloud Storage Services with FleCS Containers, Hobin Yoon, Madhumitha Ravichandran, Ada Gavrilovska, Karsten Schwan, 5th OpenCirrus Summit, Moscow, Russia, June 2011.
• Real-Time Performance Analysis in Linux-Based Robotic Systems, Hobin Yoon, Jungmoo Song and and Jamee Lee, Ottawa Linux Symposium (OLS) 2009.
• An Open-Source Based Application Framework for Open Linux Platform, Sean Sangwoo Kang, Hobin Yoon, No Joon Park, Kyung Wha Hong, Jin Mook Lim, Jae Hwa Shin, Bum Seok Lee, Hee Gyu Kim, and Cheol Ho Park, Open Source in Mobile (OSiM) 2007.

KACB 3201.

Last updated on Aug. 1, 2011.