MultiCloud 2014 Abstracts

Full Papers Short Papers
Full Papers
Paper Nr: 2
Title:

Multi-dimensional Resource Allocation for Data-intensive Large-scale Cloud Applications
Authors:

Foued Jrad, Jie Tao, Ivona Brandic and Achim Streit
Abstract: Large scale applications are emerged as one of the important applications in distributed computing. Today, the economic and technical benefits offered by the Cloud computing technology encouraged many users to migrate their applications to Cloud. On the other hand, the variety of the existing Clouds requires them to make decisions about which providers to choose in order to achieve the expected performance and service quality while keeping the payment low. In this paper, we present a multi-dimensional resource allocation scheme to automate the deployment of data-intensive large scale applications in Multi-Cloud environments. The scheme applies a two level approach in which the target Clouds are matched with respect to the Service Level Agreement (SLA) requirements and user payment at first and then the application workloads are distributed to the selected Clouds using a data locality driven scheduling policy. Using an implemented Multi-Cloud simulation environment, we evaluated our approach with a real data-intensive workflow application in different scenarios. The experimental results demonstrate the effectiveness of the implemented matching and scheduling policies in improving the workflow execution performance and reducing the amount and costs of Intercloud data transfers.
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Paper Nr: 3
Title:

Multi-cloud and Multi-data Stores - The Challenges Behind Heterogeneous Data Models
Authors:

Marcos Aurélio Almeida da Silva and Andrey Sadovykh
Abstract: The support to cloud enabled databases varies from one cloud provider to another. Developers face the task of supporting applications living in different clouds, and therefore of supporting different database management systems. To them, the challenge lies in understanding the differences in expressivity between different data stores and their impact on the application. The advent of the NoSQL movement increased the complexity of this task by leveraging the creation of a large number of cloud enabled database management systems employing slightly different data models. In this paper, we will present a model the will allow us to compare the differences in expressivity of the features supported by different databases and consider the impact of these features to different concrete deployment scenarios in multiple clouds. This model is based on the underlying data models adopted by the most used cloud database management systems. It has been developed on the FP7 JUNIPER project and will be the basis of our approach for dealing with these issues.
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Paper Nr: 7
Title:

A Multi-Cloud Framework for Measuring and Describing Performance Aspects of Cloud Services Across Different Application Types
Authors:

G. Kousiouris, G. Giammatteo, A. Evangelinou, N. Galante, E. Kevani, C. Stampoltas, A. Menychtas, A. Kopaneli, K. Ramasamy Balraj, D. Kyriazis, T. Varvarigou, P. Stuer and L. Orue-Echevarria Arrieta
Abstract: Cloud services have emerged as an innovative IT provisioning model in the recent years. However, after their usage severe considerations have emerged with regard to their varying performance due to multitenancy and resource sharing issues. These issues make it very difficult to provide any kind of performance estimation during application design or deployment time. The aim of this paper is to present a mechanism and process for measuring the performance of various Cloud services and describing this information in machine understandable format. The framework is responsible for organizing the execution and can support multiple Cloud providers. Furthermore we present approaches for measuring service performance with the usage of specialized metrics for ranking the services according to a weighted combination of cost, performance and workload.
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Paper Nr: 10
Title:

HS4MC - Hierarchical SLA-based Service Selection for Multi-Cloud Environments
Authors:

Soodeh Farokhi, Foued Jrad, Ivona Brandic and Achim Streit
Abstract: Cloud computing popularity is growing rapidly and consequently the number of companies offering their services in the form of Software-as-a-Service (SaaS) or Infrastructure-as-a-Service (IaaS) is increasing. The diversity and usage benefits of IaaS offers are encouraging SaaS providers to lease resources from the Cloud instead of operating their own data centers. However, the question remains for them how to, on the one hand, exploit Cloud benefits to gain less maintenance overheads and on the other hand, maximize the satisfactions of customers with a wide range of requirements. The complexity of addressing these issues prevent many SaaS providers to benefit from the Cloud infrastructures. In this paper, we propose HS4MC approach for automatic service selection by considering SLA claims of SaaS providers. The novelty of our approach lies in the utilization of prospect theory for the service ranking that represents a natural choice for scoring of comparable services due to the users preferences. The HS4MC approach first constructs a set of SLAs based on the given accumulated SaaS provider requirements. Then, it selects a set of services that best fulfills the SLAs. We evaluate our approach in a simulated environment by comparing it with a state-of-the-art utility-based algorithm. The evaluation results show that our approach selects services that more effectively satisfy the SLAs.
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Short Papers
Paper Nr: 5
Title:

Cloudifying Applications with ARTIST - A Global Modernization Approach to Move Applications onto the Cloud
Authors:

Leire Orue-Echevarria, Juncal Alonso, Hugo Brunelière, Andreas Menychtas, Philip Langer and Manuel Wimmer
Abstract: Cloud computing is still considered a disruptive technology in spite of being part of our lives for several years now. However, cloud computing is much more than a technology; it is also a business model. Many companies that have sold software in a traditional way are now attending to this revolution, wondering if that new technological and business shift is adequate for them, if they would be able to move their application towards the cloud, transforming alongside the company in a service oriented company and how they could do that. The European Project ARTIST aims to guide companies in this transition by providing them with methods, techniques, and tools, from when the migration is just a thought, until it can be provisioned as a service, taking into account technical, business and organizational aspects.
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Paper Nr: 6
Title:

Towards Bridging the Gap Between Scalability and Elasticity
Authors:

Nicolas Ferry, Gunnar Brataas, Alessandro Rossini, Franck Chauvel and Arnor Solberg
Abstract: Scalability and elasticity are key capabilities to tackle the variable workload of a service. Cloud elasticity offers opportunities to manage dynamically the underlying resources of a service and improve its scalability. However, managing scalability of cloud-based systems may lead to a management overhead. Self-adaptive systems are a well-known approach to tame this complexity. In this position paper, we propose an approach for the continuous design and management of scalability in multi-cloud systems. Our approach is based on a three-layer architecture and relies on two existing frameworks, namely ScaleDL and CloudMF.
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Paper Nr: 8
Title:

Preliminary Design of a Platform-as-a-Service to Provide Security in Cloud
Authors:

Valentina Casola, Alessandra De Benedictis, Massimiliano Rak and Umberto Villano
Abstract: Cloud computing is an emerging paradigm, widely adopted in distributed and business computing. Nevertheless, the biggest issue with the large adoption of cloud computing is the perception of loss of security and control over resources that are dynamically acquired in the cloud and that reside on remote providers, and the strong integration of security mechanisms into system architectures. This paper deals with the integration of security features into cloud applications by an as-a-service approach, using Service Level Agreements as a means to clearly define rights and constraints of both customers and providers. The goal is to show the main requirements of a platform dedicated to security and to present the global architecture, in terms of components and their interactions, devoted to negotiate, monitor and enforce the security mechanisms to be applied over existing cloud providers.
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Paper Nr: 9
Title:

EU Project SeaClouds - Adaptive Management of Service-based Applications Across Multiple Clouds
Authors:

Antonio Brogi, José Carrasco, Javier Cubo, Francesco D'Andria, Ahmad Ibrahim, Ernesto Pimentel and Jacopo Soldani
Abstract: The adaptive management of complex applications deployed across multiple heterogeneous PaaS platforms is one of the problems that have emerged with the cloud revolution. The ongoing EU research project SeaClouds aims at providing seamless adaptive multi-cloud management of complex applications by supporting the distribution, monitoring and migration of application modules over multiple heterogeneous PaaS platforms. In this paper we present context, motivations and objectives of SeaClouds, its relation with other cloud initiatives, and its initial architecture.
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