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WNoDeS – Worker Nodes on Demand Service

WNoDeS has a Cloud Computing interface based on the OCCI API. This API is either accessible programmatically for maximum flexibility, or via a Web-based Application for maximum ease of use. This provides on-demand computing resources allocated to users out of a common pool.

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WNoDeS – Worker Nodes on Demand Service

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  1. WNoDeS has a Cloud Computing interface based on the OCCI API. • This API is either accessible programmatically for maximum flexibility, or via a Web-based Application for maximum ease of use. • This provides on-demand computing resources allocated to users out of a common pool. • Authentication is internally based on Short-Lived X.509 Certificates obtained through an online CA. Through a general resource access portal being developed in collaboration with the Italian Grid Infrastructure (IGI), users can authenticate through several methods, like Kerberos, Shibboleth, X.509/VOMS or Username/Password. • WNoDeS provides a seamless integratation with Grid Computing gLite middleware for transparent Grid job execution on VMs. • Dynamic selection of resources (VM types, parameters) is done through standard gLite Grid submission tools. • Resource selection is based on a Glue 1.x schema attribute (SoftwareRunTimeEnvironment)This interoperates with current gLite WMS and CREAM CE middleware. • Authentication is based on VOMS (Virtual Organization Membership Service). • Authorization is based on the EMI (European Middleware Initiative) ARGUS Authorization Service. WNoDeS – Worker Nodes on Demand Service Dynamic Provisioning of Integrated Grid/Cloud Virtual Environments • Local batch jobs can be run on both real and virtual execution hosts. (Worker Nodes) • A virtual Worker Node is instantiated on-demand to provide computing resources for the execution of batch jobs just when needed. • WNoDeS allows customized execution environments based on VMs, built and instantiated to match user requirements. Batch Job Execution Cloud Computing Grid Integration WNoDeS Virtual Interactive Pools (VIP) • WNoDeS VIP: on-demand provisioning of virtual user interfaces for local users out of a common resource pool. • Based on a CLI, it can be easily used by computing center users seeking for additional, unused resources. • Provides customized computing resources for interactive usage. (for example, software development or physics analysis) • The provisioned virtual resource matches user requirements for RAM, CPU, bandwidth and shared file systems to be mounted. A caching mechanism is available, to reduce system provisioning time. WNoDeS Fact Sheet Deployment WNoDeS is in production at the INFN Tier-1 Computing Center (Bologna – Italy), fully integrated with its 9000-cores farm. 2000 VMs can currently be instantiated on-demand out of this common farm to support Cloud computing, or custom executing environments. WNoDeS is also installed at two INFN Tier-2 centers (Bari and LNL). Main Features • Grid/Cloud Full Integration • Support for multiple batch systems (Platform LSF, PBS/Torque) • Authentication Gateway • VM image selection • VirtIO support • Network throttling • V-LAN support • libguestFS support • Multi-core VMs • Cloud: OCCI API • Cloud: Web Console • Integration with shared distributed file systems (INFN Tier-1 and LNL: IBM GPFS; INFN Bari: Lustre)

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