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Resource representations in GENI workshops (GEC[78])

Resource representations in GENI workshops (GEC[78]). Ilia Baldine. What’s the big idea?. Resource representations are an important aspect of GENI engineering efforts They affect the operations of CFs and all associated tools E.g. resource allocation policies

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Resource representations in GENI workshops (GEC[78])

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  1. Resource representations in GENI workshops (GEC[78]) Ilia Baldine

  2. What’s the big idea? • Resource representations are an important aspect of GENI engineering efforts • They affect the operations of CFs and all associated tools • E.g. resource allocation policies • There is an interesting set of issues related to • Proper abstractions and models • Mechanisms for representing those

  3. The big agreement: Resource Representations are • Used by elements of control frameworks • Used by experimenter tools • Visualizations, performance measurements etc. etc. • Have a lifecycle • Current state of the substrate • Request specification • Slice specification • ‘As-built’ manifest

  4. The problem • Existing formats • PG RSpec • PL RSpec • OF RSpec • Omni (user-facing) • NDL-OWL, WSNDL • That’s just for the common resources (networks, servers etc) • What happens when we get to measurements and other less common types of resources? Presentation title goes here

  5. Points of argument • The details of the formats • The RSpecs (PG, PL, OF) • The approach • XML (works now, DIY) vs. RDF/OWL (external toolage, steep learning curve) • Maybe XML-based approaches are sufficient • Substrates are complex, semantic approaches offer unlimited extensibility and path to sophisticated policies • The models • Require domain expertise • Owners of substrates know best • Should we try to bring rigor and unification? • Should we leave them alone?

  6. Questions • Where is the line between user tools and CF? • How do we make user tools work? • Tower of Babel? • Standardization or translation? • What are the right resource representation models? Presentation title goes here

  7. What has been discussed so far • PG RSpec (Rob Ricci) • ORCA NDL-OWL + RDF/OWL primer (Ilia Baldine, YufengXin) • Semantic resource representations for wireless and testbeds (Hongwei Zhang [WSNDL], Max Ott) • OpenFlow (Rob Sherwood) • Omni (Tom Mitchell, others from GPO)

  8. To be discussed in near term (probably GEC9) • Representations of measurement resources • OGF NML efforts • Models for multi-layered topology representations • Wireless/sensor networks • ??? Presentation title goes here

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