Performance of Grids and Clouds: Advanced Challenges and Research Trends
Eleni D. Karatza, Professor of Department of Informatics
Aristotle University of Thessaloniki, Greece

Tuesday, May 20, 2014
2–3 p.m.
Brickyard (BYENG) 210 [map], Tempe campus

Abstract:
The popularity of grids and clouds has been growing rapidly, and their performance becomes more important due to the tremendous increase of users and applications.

Because of the nature of these systems, there are important issues that must be addressed, such as resource allocation, efficient scheduling, energy conservation, reliability, security and trust, cost, availability, and quality. Effective management of grid and cloud resources is crucial to use effectively the power of these systems and achieve high system performance. Furthermore, due to the cost of electrical power consumption and the environmental impact, energy efficiency in grid and cloud systems is a global IT concern.

Cloud computing is a concept that has emerged from grid computing; it provides users the ability to acquire computational resources on demand from its virtually infinite pool on a pay-as-you-go basis.

The cloud computing paradigm can offer various types of services, such as computational resources for HPC applications, web services, social networking, etc. Resource allocation and scheduling is a difficult task in clouds where there are many alternative heterogeneous computers. If cloud computing is going to be used for HPC, appropriate methods must be considered for allocating resources to user requests efficiently, VM scalability, as well as effectively scheduling the tasks. The scheduling algorithms must seek a way to maintain a good response time to leasing cost ratio. Furthermore, adequate data security and availability are critical issues that have to be considered along with energy-efficient solutions that are required to minimize the impact of cloud computing on the environment.

In this seminar, Eleni Karatza plans to present state-of-the-art research covering a variety of concepts on grid and cloud computing, and to provide future trends and directions in the cloud computing area.

Bio:
Eleni D. Karatza is a professor in the Department of Informatics at the Aristotle University of Thessaloniki, Greece. Karatza’s research interests include computer systems modeling and simulation, performance evaluation, grid and cloud computing, energy efficiency in large-scale distributed systems, resource allocation and scheduling and real-time distributed systems.

Karatza has authored or co-authored over 180 technical papers and book chapters including four papers that earned best paper awards at international conferences. She is senior member of IEEE, ACM and SCS, and she served as an elected member of the Board of Directors at Large of the Society for Modeling and Simulation International (2009-2011). She has served as program chair and keynote speaker in international conferences.

Karatza is the editor-in-chief of the Elsevier Journal “Simulation Modeling Practice and Theory”, area editor for Computers Systems and Networks of the “Journal of Systems and Software” of Elsevier, and she has been guest editor of Special Issues in multiple International Journals.

Hosted by Yinong Chen and Huan Liu

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