VDPilot: feasibility study of hosting virtual desktops for classroom labs within a federated university system

Calyam, Prasad; Berryman, Alex; Welling, David R.; Mohan, S.; Ramnath, Rajiv; Ramnathan, Jay

doi:10.1504/ijcc.2014.062274

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…In fifth step, the team has focused on mode of offering the SL for working professionals. The team has decided to offer the simulation tool through the cloud server (Calyam et al., 2014). This requires minimum amount of infrastructure from the student (Chen et al., 2015).…”

Section: Discussionmentioning

confidence: 99%

Development of a lean manufacturing simulation laboratory for continuing education students

Jasti

Kota

Venkataraman

2020

Journal of Adult and Continuing Education

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The objective of the article is to establish the significance of a simulation laboratory especially simulation exercises for continuing education students in lean manufacturing course. Subsequently, identify the influence and analysis of these simulation exercises in exploring, understanding and implementing lean strategies in various contexts. The research is carried out through the following steps: enhancing the course handout and course outcomes, identifying the various lean concepts and proposing relevant exercises, mapping the course outcomes with the proposed exercises, identifying the appropriate simulation tool and developing the proposed exercises, deciding the mode of simulation laboratory offering, offering the selected critical exercises in simulation laboratory, conducting a critical review of simulation exercises with a team of experts and performing a comparative study on the student performance. The study has identified that there was a significant improvement in the performance of the students after participating in the simulation laboratory, especially in achieving the course outcomes. This was established by the analysis of the various examination scores, feedback on simulation exercises and instructors. This attempt is the first of its kind to analyse the student performance after incorporating simulation laboratory in a lean manufacturing course. The focus is on evaluating student performance based on the scores in the examinations. A population of 488 students enrolled in a masters’ degree programme is considered in the analysis 234 (without simulation lab) and 254 (with simulation lab).

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Section: Discussionmentioning

confidence: 99%

Development of a lean manufacturing simulation laboratory for continuing education students

Jasti

Kota

Venkataraman

2020

Journal of Adult and Continuing Education

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“…In the VDpilot study [47], VD performance was evaluated with 38 participants who assessed application QoE in comparison to performance in a physical desktop. Five applications were evaluated; the participants used their own devices to access the VDs over a WAN connection.…”

Section: Related Workmentioning

confidence: 99%

Methods for Objective and Subjective Evaluation of Zero-Client Computing

et al. 2019

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Zero clients are hardware-based devices without a central processing unit (CPU) that deliver virtual desktops (VDs) from remote computing systems to users. We measured the performance of applications accessed through zero clients to study the feasibility of using this approach to provide a desktop-pc experience across a network. Performance evaluation is complicated because monitoring software cannot be downloaded to the zero clients. Therefore, we introduce a new methodology and metric to measure zero-client VD performance that is based on network-traffic analysis. We conducted objective and subjective studies to determine the sensitivity of application-specific metrics to different network conditions. The results show that the packet loss rate (PLR) impacts zero-client performance for some applications such as video streaming. Subjective tests showed a greater user sensitivity to the PLR for video streaming than for image viewing or Skype. A strong correlation was found between the objective and subjective measurements but the rate at which these measurements changed with increasing PLR differed depending on the application. INDEX TERMS Edge-cloud, measurements, objective study, QoE, remote desktops, subjective study, VDI, VDI metrics, virtual desktops, zero clients. I. INTRODUCTION Virtual-Desktop (VD) technologies have been growing in popularity as several remote desktop tools, such as VNC, Microsoft Remote Desktop Services (RDS), and TeamViewer, have been developed to support this paradigm. Remote desktop clients have been implemented in custom Application Specific Integrated Circuits (ASICs) or Field Programmable Gate Arrays (FPGAs). For example, Teradici Tera2321, is used in equipment called zero clients, which include interfaces such as USB, DVI, and HDMI ports to connect keyboard, video, mouse (KVM) terminals, and an Ethernet port for network connectivity. Zero-client hardware has primarily been developed for enterprises, with each user being supported by one Virtual Machine (VM) in an edge-or commercial-cloud host. Thus, zero clients are used in schools, hospitals, libraries, and businesses [1]-[4]. Zero clients have also been used for highperformance graphics applications to allow multiple users to share the more expensive processing engines [5]. Graphics applications frequently exploit co-location of zero clients The associate editor coordinating the review of this manuscript and approving it for publication was Haibo Wu.

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“…Calyam et al [13] discussed the challenges for faculty and students when accessing, reserving, and using the resources of universities labs. They implemented a VDI that can support up to concurrently 50 faculty and students access to the software available on the lab remotely over the Internet.…”

Section: Literature Reviewmentioning

confidence: 99%

Performance evaluation of VDI environment

Rahman¹,

Azzedin²,

Shawahna³

et al. 2016

2016 Sixth International Conference on Innovative Computing Technology (INTECH)

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Virtualization technology is widely used for sharing the abilities of computer systems by splitting the resources among various virtual PCs. In traditional computer systems, the utilization of hardware is not maximized and the resources are not fully consumed. By using the virtualization technology, the maximum utilization of computer system hardware is possible. Today, many organizations especially educational institutes are adopting virtualization technology to minimize the costs and increase the flexibility, responsiveness, and efficiency. In this paper, we built a virtual educational lab in which we successfully implemented Virtual Desktop Infrastructure (VDI) and created more than 30 virtual desktops. The virtual desktops are created on the Citrix XenServer hypervisor using the Citrix XenDesktop. Finally, we used benchmarking software tool called Login VSI in order to measure the performance of the virtual desktop infrastructure and the XenServer hypervisor. The results have shown that the system performs well with 30 virtual desktops without reaching the saturation point.

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VDPilot: feasibility study of hosting virtual desktops for classroom labs within a federated university system

Cited by 5 publications

References 2 publications

Development of a lean manufacturing simulation laboratory for continuing education students

Development of a lean manufacturing simulation laboratory for continuing education students

Methods for Objective and Subjective Evaluation of Zero-Client Computing

Performance evaluation of VDI environment

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