Titre: Service Level Agreement for Cloud Computing: Towards a Control-Theoretic Approach
Resume: Cloud Computing is a paradigm for enabling remote, on-demand access to a set of configurable computing resources. This model aims to provide hardware and software services to customers, while minimizing human efforts in terms of service installation, configuration and maintenance, for both cloud provider and cloud customer. A cloud may have the form of an Infrastructure as a Service (IaaS), a Platform as a Service (PaaS) or a Software as a Service (SaaS). However, cloud’s ad-hoc management in terms of quality-of-service and service level agreement (SLA) poses significant challenges to the performance, availability, energy consumption and economical costs of the cloud. We believe that a differentiating element between Cloud Computing environments will be the quality-of-service and the service level agreement (SLA) provided by the cloud. In this talk, we will discuss the definition and implementation of a novel cloud model: SLAaaS (SLA aware Service). The SLAaaS model enriches the general paradigm of Cloud Computing, and enables systematic and transparent integration of service levels and SLA to the cloud. SLAaaS is orthogonal to IaaS, PaaS and SaaS clouds and may apply to any of them. Both the cloud provider and cloud customer points of view are taken into account. From cloud provider’s point of view, we present autonomic SLA management to handle performance, availability, energy and cost issues in the cloud. An innovative approach combines control theory techniques with distributed algorithms and language support in order to build autonomic elastic clouds. Novel models, control laws, distributed algorithms and languages will be proposed for automated provisioning, configuration and deployment of cloud services to meet SLA requirements, while tackling scalability and dynamics issues. On the other hand from cloud customer’s point of view, we discuss SLA governance. It allows cloud customers to be part of the loop and to ba automatically notified about the state of the cloud, such as SLA violation and cloud energy consumption. The former provides more transparecy about SLA guaranties, and the latter aims to raise customers’ awareness about cloud’s energy footprint.
Biographie de l’oratrice : Sara Bouchenak is Associate Professor in Computer Science at University of Grenoble I since 2004. She is the Academic Program Chair of the first year of the international Master of Science in Informatics at Grenoble. She is a member of the ERODS research group at LIG laboratory, where she conducts research on highly-available, dependable and manageable distributed computer systems. Prior to that, she was a visiting professor at Universidad Politécnica de Madrid, Spain, in 2009/2010, and an associate researcher at EPFL, Switzerland, in 2003.
Sara Bouchenak is a member of ACM, IEEE, and EuroSys; she was an officer of the French chapter of ACM-SIGOPS. She received her HDR (Habilitation à Diriger les Recherches) from University of Grenoble I in 2010, and her PhD in computer science from Grenoble Institute of Technology in 2001.
Lieu: salle de conf I3S
