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WingCache : Application-aware Caching for Hybrid Render Farm
KyungWoon Cho,JinWoo Seo,Joon Kang,JinUng Lee,SangJin Kim,JinWoo Park,JiYoung Song,JungWhan Kim,DaeSuk Kwon 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.4
In this paper, we present a hybrid render farm which can accommodate cloud-based rendering servers to extend the rendering capacity of a local cluster render farm. A rendering workload in real world tends to highly fluctuate, so it is very common for an on-premise cluster to be overloaded. However, running a rendering job on a remote cloud has a few challenging issues: input data synchronization and complex infrastructure management. Our proposed RenderVerse can overcome mentioned obstacles with an application-aware caching scheme coupled with a repository and a hierarchical server node management.
김정식(Jeongsik Kim),심우찬(Woochan Shim),정재욱(Jaewook Jeong),이홍철(Hongchul Lee),김경운(Kyungwoon Kim),한대곤(Daegon Han) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
To meet stringent diesel particulate matter regulations, diesel particulate filter(DPF) is the best solution. Passive type DPF system is not able to regenerate for low load driving conditions. Therefore, this system is required to forcibly burn the particulate held in the DPF. One effective method of active DPF regeneration is to burn soot by using diesel burner. Although active diesel burner is useful tool to regenerate DPF, there are shortcomings related to ignition. Because ignition is seriously affected by oxygen density which varies with engine load, it is important to know the effect of oxygen density on ignition. In this study, it was found that oxygen density is a main key to start ignition and should be more than 15% for normal ignition of active diesel burner.
The Impact of Container Virtualization on Network Performance of IoT Devices
Lee, Kyungwoon,Kim, Youngpil,Yoo, Chuck Hindawi Limited 2018 Mobile information systems Vol.2018 No.-
<P>Container-based virtualization offers advantages such as high performance, resource efficiency, and agile environment. These advantages make Internet of Things (IoT) device management easy. Although container-based virtualization has already been introduced to IoT devices, the different network modes of containers and their performance issues have not been addressed. Since the network performance is an important factor in IoT, the analysis of the container network performance is essential. In this study, we analyze the network performance of containers on an IoT device, Raspberry Pi 3. The results show that the network performance of containers is lower than that of the native Linux, with an average performance difference of 6% and 18% for TCP and UDP, respectively. In addition, the network performance of containers varies depending on the network mode. When a single container runs, bridge mode achieves higher performance than host mode by 25% while host mode shows better performance than bridge mode by 45% in the multicontainer environment.</P>