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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Tess Malone, Communications Officer
Summary Sentence: Youngjin Kwon gives a talk.
Full Summary: No summary paragraph submitted.
Youngjin KwonTITLE: Designing Systems for Emerging Memory Technologies
ABSTRACT:
Currently, system software struggles with the large capacity and diversity of modern memory technologies. My primary research agenda is to build systems that address the challenges of emerging memory technologies efficiently and robustly. For example, large-scale machine learning applications want to load large datasets into memory for fast computation. For these workloads, simply adding more RAM to a machine reaches a point of diminishing returns for performance because their poor spatial locality causes them to suffer high virtual to physical memory translation costs. Ingens addresses the shortcomings in modern operating systems and hypervisors that underlies these excessive address translation overheads and redesign huge page memory systems to make huge page widely used in practice. I also implemented some of these techniques in VMware’s commercial hypervisor.
Emerging non-volatile memory (NVM) technologies will have excellent performance, byte-addressability, and large capacity, blurring the line between traditional volatile DRAM and non-volatile storage. These NVM technologies diverge from DRAM in important ways, like limited write bandwidth. It is likely that future storage market will be diversified, having DRAM, NVM, SSD, and hard disk. Unfortunately, current file systems built on top of old design ideas cannot provide an efficient way to take advantage of the different storage media. Strata is a cross media file system, fundamentally redesigning file systems to leverage different strengths of storage technologies while compensating their weaknesses.
BIO:
Youngjin Kwon is a Ph.D. candidate at The University of Texas at Austin under supervision of Professor Emmett Witchel and Professor Simon Peter. His research interests lie in operating systems, including file systems, emerging storage and memory technologies, system support for security, and virtualization. His research has been recognized by VMware, and he contributed building an initial version of his research work to VMware commercial hypervisor.
