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Wontaek Hong
Division of National Supercomputing, Korea Institute of Science and Technology Information, Daejeon 34141, Korea

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Journal article
Published: 16 April 2018 in Symmetry
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The rapid transfer of massive data in the cloud environment is required to prepare for unexpected situations like disaster recovery. With regard to this requirement, we propose a new approach to transferring cloud virtual machine images rapidly in the cloud environment utilizing dedicated Data Transfer Nodes (DTNs). The overall procedure is composed of local/remote copy processes and a DTN-to-DTN transfer process. These processes are coordinated and executed based on a fork system call in the proposed algorithm. In addition, we especially focus on the local copy process between a cloud controller and DTNs and improve data transfer performance through the well-tuned mount techniques in Network File System (NFS)-based connections. Several experiments have been performed considering the combination of synchronous/asynchronous modes and the network buffer size. We show the results of throughput in all the experiment cases and compare them. Consequently, the best throughput in write operations has been obtained in the case of an NFS server in a DTN and an NFS client in a cloud controller running entirely in the asynchronous mode.

ACS Style

Wontaek Hong; Jeonghoon Moon; Woojin Seok; Jinwook Chung. Enhancing Data Transfer Performance Utilizing a DTN between Cloud Service Providers. Symmetry 2018, 10, 110 .

AMA Style

Wontaek Hong, Jeonghoon Moon, Woojin Seok, Jinwook Chung. Enhancing Data Transfer Performance Utilizing a DTN between Cloud Service Providers. Symmetry. 2018; 10 (4):110.

Chicago/Turabian Style

Wontaek Hong; Jeonghoon Moon; Woojin Seok; Jinwook Chung. 2018. "Enhancing Data Transfer Performance Utilizing a DTN between Cloud Service Providers." Symmetry 10, no. 4: 110.

Journal article
Published: 31 October 2006 in Future Generation Computer Systems
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Emerging large-scale applications for e-science and Grid require end-to-end lightpaths that need to be dynamically provisioned with QoS (quality of service) guarantees. In this paper, an e-science collaboration is demonstrated as a part of iGRID2005, where an interactive 3D HD (high definition) video transport is realized over an inter-continental lambda integrated facility on 10 Gbps GLORIAD links. To realize real-time interactive (2-way) collaboration among scientific researchers, the 10 Gbps end-to-end user-controlled lightpath between Korea and USA is dynamically provided with very high network performance. Both uncompressed and stereoscopic HD videos are then exchanged between participating sites. Thus, we verify the potential of proposed e-science collaborations by discussing underlying lambda networking infrastructure, UCLP-enabled dynamic lightpath provisioning, HD video system setup and integration, and demonstration results.

ACS Style

Jinyong Jo; Wontaek Hong; Seungjoo Lee; DongKyun Kim; Jongwon Kim; Okhwan Byeon. Interactive 3D HD video transport for e-science collaboration over UCLP-enabled GLORIAD lightpath. Future Generation Computer Systems 2006, 22, 884 -891.

AMA Style

Jinyong Jo, Wontaek Hong, Seungjoo Lee, DongKyun Kim, Jongwon Kim, Okhwan Byeon. Interactive 3D HD video transport for e-science collaboration over UCLP-enabled GLORIAD lightpath. Future Generation Computer Systems. 2006; 22 (8):884-891.

Chicago/Turabian Style

Jinyong Jo; Wontaek Hong; Seungjoo Lee; DongKyun Kim; Jongwon Kim; Okhwan Byeon. 2006. "Interactive 3D HD video transport for e-science collaboration over UCLP-enabled GLORIAD lightpath." Future Generation Computer Systems 22, no. 8: 884-891.