Linux-based virtualization for HPC clusters

International audienceThere has been an increasing interest in virtualization in the HPC community, as it would allow to easily and efficiently share computing resources between users, and provide a simple solution for checkpointing. However, virtualization raises a number of interesting questions, on performance and overhead, of course, but also on the fairness of the sharing. In this work, we evaluate the suitability of KVM virtual machines in this context, by comparing them with solutions based on Xen. We also outline areas where improvements are needed, to provide directions for future works

Document d'aide au déploiement d'IPv6 sur Grid5000

Ce document présente succinctement les motivations pour l'utilisation d'IPv6 dans les grilles. Une analyse des opérations nécessaires pour son déploiement dans la plateforme Grid5000 est ensuite présentée et détaillée

Monitoring Internal Power Consumption of Computing Systems

Demonstration and Poster presented in Rencontres INRIA et Industrie 2012, Montbonnot, Franc

Évaluation des performances réseau dans le contexte de la virtualisation XEN

Virtualization technics of the Operating System improve security, isolation, reliability and flexibility of the environments. These technics become a must in large scale distributed system and begin to be used in data transport networks. However, virtualization introduced an overhead which must be integrated to virtualized system performance models in order to forecast their behavior. In this article, we analyse this overhead and give an experimental evaluation of the virtualization impact with XEN over the network performance in high speed network context. We show that the throughput reached with TCP is barely affected by the virtulization at the expense of a growing CPU consumption. Moreover, we study the conflicts between protocol process and standard process to access CPU resources. Finally, we show the impact of the TCP's congestion window size in case of several virtual machines running

Monitoring Energy Consumption in clouds: the CompatibleOne experience

Poster in Cloud and Green Computing conference (CGC 2011), Sydney, Australia-

Linux-based virtualization for HPC clusters

There has been an increasing interest in virtualization in the HPC community, as it would allow to easily and efficiently share computing resources between users, and provide a simple solution for checkpointing. However, virtualization raises a number of interesting questions, on performance and overhead, of course, but also on the fairness of the sharing. In this work, we evaluate the suitability of KVM virtual machines in this context, by comparing them with solutions based on Xen. We also outline areas where improvements are needed, to provide directions for future works. 1 Introduction an

Monitoring Energy Consumption in clouds: the CompatibleOne experience

Poster in Cloud and Green Computing conference (CGC 2011), Sydney, Australia-

A Scalable Security Model for Enabling Dynamic Virtual Private Execution Infrastructures on the Internet

International audienceWith the expansion and the convergence of computing and communication, the dynamic provisioning of customized pro- cessing and networking infrastructures as well as resource virtualization are appealing concepts and technologies. There- fore, new models and tools are needed to allow users to create, trust and exploit such on-demand virtual infrastruc- tures within wide area distributed environments. This pa- per proposes to combine network and system virtualization with cryptographic identification and SPKI/HIP principles to help the user communities to build and share their own re- source reservoirs. These ideas are implemented in the HIPer- Net framework enabling the creation and the management of customized confined execution environments in a large scale context. Based on the example of biomedical applications, the paper focuses on the security model of the HIPerNet system and develops the key aspects of our distributed se- curity approach. Then the paper discusses and illustrates how HIPerNet solutions fulfill the security requirements of applications through different scenarios

CompatibleOne: Designing an Energy Efficient Open Source Cloud Broker

International audienceIn this paper, we present the new French Cloud management software called Compatible One. Compatible One is an open source cloud services broker i.e. a cloud service management software with brokering capabilities. Compatible One can provision, deploy and manage any type of cloud services, these services being provided by heterogeneous service providers selected according to Service Level Agreement (SLA). Compatible One can also federate heterogeneous resources and more precisely integrate seamlessly various cloud services. Given this approach it allows us to exploit original solutions and moreover include at design level some new paradigms like energy efficiency. This paper focuses on the current activities done in the Compatible One project for energy monitoring and energy efficient management of Clouds systems