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• Remote Issues

Initial thoughts on Remote Issues

• Security issues
  • All components accessing a cluster must be authorized against the cluster; storage component accessed by the cluster also need to be a trusted id.
  • New plugins identification and registration in a secure way
  • P2P / Thinking@home execution of plugins
• Data flow between remote components. Requirements such as BW must be considered
• Communication between plugins (e.g. via MPI?) add references
• Location of remote plugins. Plugin discovery. E.g. UDDI (OASIS defined) add references
• Registration of new plugins and dynamic registration in execution time
• Implementation language, execution platform: Web Services are independent of both
• There can be multiple implementations of a single WSDL interface. E.g., the same service could be built for Linux and Windows machines, and the user would not realise (or care) which platform was hosting the service.
• WSRF (following initial OGSA/OGSI specifications) adds state to Web services in order to control the remote service during its lifetime(stateful Web Services, Grid Services).