Computing and Information Systems - Research Publications

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    Scheduling parallel applications on Utility Grids: Time and cost trade-off management
    Garg, SK ; Buyya, R ; Siegel, HJ (Australian Computer Society, 2009-12-01)
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    A heuristic for mapping virtual machines and links in emulation testbeds
    Calheiros, RN ; Buyya, R ; De Rose, CAF (IEEE, 2009-12-01)
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    Dependable workflow scheduling in global grids
    Rahman, M ; Ranjan, R ; Buyya, R (IEEE, 2009-12-01)
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    Cost of Virtual Machine Live Migration in Clouds: A Performance Evaluation
    Voorsluys, W ; Broberg, J ; Venugopal, S ; Buyya, R ; Jaatun, MG ; Zhao, G ; Rong, C (SPRINGER-VERLAG BERLIN, 2009)
    Virtualization has become commonplace in modern data centers, often referred as "computing clouds". The capability of virtual machine live migration brings benefits such as improved performance, manageability and fault tolerance, while allowing workload movement with a short service downtime. However, service levels of applications are likely to be negatively affected during a live migration. For this reason, a better understanding of its effects on system performance is desirable. In this paper, we evaluate the effects of live migration of virtual machines on the performance of applications running inside Xen VMs. Results show that, in most cases, migration overhead is acceptable but cannot be disregarded, especially in systems where availability and responsiveness are governed by strict Service Level Agreements. Despite that, there is a high potential for live migration applicability in data centers serving modernInternet applications. Our results are based on a workload covering the domain of multi-tier Web 2.0 applications.
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    Enabling computational steering with an asynchronous-iterative computation framework
    Di Costanzo, A ; Jin, C ; Varela, CA ; Buyya, R (IEEE, 2009-12-01)