The workshop takes place over one and a half days. Please find the programme below.

Saturday April 20

9am	9.30am	Participants arrive
9.30am	9.40am	Welcome by workshop organisers
9.40am	11am	Keynote by Alexandru Iosup: IaaS Cloud Benchmarking: Approaches, Challenges, and Experience

Session 1: Cloud Management

11.15am	11.45am	Jakub Tomczak and Maciej Zieba. On-line Bayesian Context Change Detection in Web Service Systems
11.45am	12.15pm	Rustem Dautov, Iraklis Paraskakis and Dimitrios Kourtesis. Addressing Self-Management in Cloud Platforms: a Semantic Sensor Web Approach
12.15pm	12.45pm	Kiril Schröder and Wolfgang Nebel. Behavioral Model for Cloud aware Load and Power Management

Session 2: At the edge of the Cloud

1.45pm	2.15pm	Maurizio Naldi and Loretta Mastroeni. Cloud storage pricing: a comparison of current practices
2.15pm	2.45pm	Adrián Juan-Verdejo and Henning Baars. Decision support for partially moving applications to the Cloud – the example of Business Intelligence
2.45pm	3.15pm	Steffen Viken Valvåg, Dag Johansen and Åge Kvalnes. Rusta: Elastic processing and storage at the edge of the cloud (position paper)

Session 3: Discussion

3.30pm

5pm

Discussion --  Topics of Interest

8pm Workshop Dinner

Restaurant Rott, Map

Meet in the lobby of the Dorint hotel at 7.30pm to be taken there

Sunday April 21

9am	9.30am	Participants arrive
9.30am	10.30am	Invited talk: Samuel Kounev: RELATE: A Research Training Network on Engineering and Provisioning of Service-Based Cloud Applications

Session 4: Cloud performance

10.45am	11.15am	Junzan Zhou, Shanping Li, Zhen Zhang and Zhen Ye. Cloud-based performance testing: issues and challenges (position paper)
11.15am	11.45am	Markus Klems and Hoàng Anh Lê. Cloud System Deployment and Performance Evaluation Tools for Distributed Databases (position paper)

Session 5: Cloud techniques

11.45am	12.15pm	Robert Kleinfeld, Lukasz Radziwonowicz, Eric Robson, Leigh Griffin and Fenareti Lampathaki. OPENi – Future of a Consumer-centric Cloud-based Application Platform (position paper)
12.15pm	12.45pm	Ilias Gerostathopoulos, Tomas Bures and Petr Hnetynka. Towards a requirements-driven design of ensemble-based component systems (position paper)

Keynote and Invited Talk Details

Alexandru Iosup: IaaS Cloud Benchmarking: Approaches, Challenges, and Experience

Abstract: Over the past five years, Infrastructure-as-a-Service clouds have grown into the branch of ICT that offers services related to on-demand lease of storage, computation, and network. One of the major impediments in the selection and even use of (commercial) IaaS clouds is the lack of benchmarking results, that is, the lack of trustworthy quantitative information that allows (potential) cloud users to compare and reason about IaaS clouds.

In this talk we discuss empirical approaches to quantitative evaluation, which we find to be a necessary bumpy road toward cloud benchmarking. Both industry and academia have used empirical approaches for years, but the limited success achieved so far for IaaS clouds and similar systems (e.g., grids) is perhaps indicative of the complexity and size of challenges. We present initial results of our research into cloud workload characterization, including Big Data applications. We present the lessons we have learned in developing the SkyMark framework for cloud performance evaluation and the results of our SkyMark-based investigation of three research questions: What is the performance of production IaaS cloud services? How variable is the performance of widely used production cloud services? and What is the impact on performance of the user-level middleware, such as the provisioning and allocation policies that interact with IaaS clouds? We discuss the impact of our findings on large-scale, many-task, and many-user applications; notably, we discuss not only cloud performance, but also operation and behavior.

In contrast to previous attempts, our research combines empirical and other approaches, for example modeling and simulation, for gaining more insight; is based on a combination of short-term and multi-year measurements, for ensuring the longevity of our results; and uses large, comprehensive studies of several real clouds, for reducing the threats to validity related to the experimental environment. This presentation can also provide useful insights for fields related to benchmarking, for example experimental evaluation conducted in other large-scale distributed systems.

Last but not least, we present a roadmap toward cloud benchmarking and the way we plan to progress on it with other members of the RG Cloud Group of the Standard Performance Evaluation Corporation (SPEC).

Bio: Dr. Alexandru Iosup received his Ph.D. in Computer Science in 2009 from the Delft University of Technology (TU Delft), the Netherlands. He is currently an Assistant Professor with the Parallel and Distributed Systems Group at TU Delft. He was a visiting scholar at U. Dortmund, U.Wisconsin-Madison, U. Innsbruck, and U.California-Berkeley in 2004, 2006, 2008, and 2010, respectively. In 2011 he received a Dutch NWO/STW Veni grant (the Dutch equivalent of the US NSF CAREER.) His research interests are in the area of distributed computing; keywords: cloud computing, grid computing, peer-to-peer systems, scientific computing, massively multiplayer online games, scheduling, scalability, reliability, performance evaluation, and workload characterization. Dr. Iosup is the author of over 50 scientific publications and has received several awards and distinctions, including best paper awards at IEEE CCGrid 2010, Euro-Par 2009, and IEEE P2P 2006. He is the co-founder of the Grid Workloads, the Peer-to-Peer Trace, and the Failure Trace Archives, which provide open access to workload and resource operation traces from large-scale distributed computing environments. He is currently working on cloud resource management for e-Science and consumer workloads.

Samuel Kounev: RELATE: A Research Training Network on Engineering and Provisioning of Service-Based Cloud Applications

Abstract: The RELATE Initial Training Network (ITN), funded by the EU in the Marie Curie Actions programme, is a multidisciplinary training network of European academic and industrial partners working together to train academic researchers and next generation experts in the area of engineering and provisioning of service-based Cloud applications. In this talk, we present the up-to-date goals and strategy of the RELATE project and give an overview of the ongoing research activities within the training network.