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 There is an interesting set of issues related to –Proper abstractions and models –Mechanisms for representing those 2

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 3

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 here4

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? 5

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 here6

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

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 here8