ࡱ> WYV #bjbj<< $4^^$: : 8G[#o(=#?#?#?#?#?#?#H%'`?#?#<T#=#=#r!T"pFQ"#$j#0#_"J(J("": :   Digital Object Registry Corporation for National Research Initiatives GENI Quarterly Report Oct 22, 2010 through Dec 31, 2010 1. Major Accomplishments The scope of work on this project is to adapt the Handle System as well as components of the CNRI Digital Object Registry to create a clearinghouse registry for principals, slices, and/or components in at least one GENI Spiral 1 control framework, capable of supporting limited operations in Year 1 and extending that functionality to additional frameworks and to additional functions in Years 2 and 3. We have successfully adapted the Digital Object Registry and related technologies in building a GENI Federated Clearinghouse and a Distributed Hash Table for Seattle, aka Million Node GENI, led by Justin Cappos. We have offered these services by deploying them in production servers with high availability and network bandwidth. The Year 3 scope of work, in addition to supporting the above services, is to design a prototype of the Measurement Data Archive service and coordinate with GENI members to integrate their instrumentation and measurement projects into the prototype. During this quarter, we continued participating in various GENI activities and programs, including attending the GEC 9 held in Washington, DC, and also continued our collaboration with GENI members and System Engineers as part of the I&M Working Group. We: Continued to make available the GENI Federated Clearinghouse service that regularly federates the information from the ProtoGENI clearinghouse and makes that information available via the Digital Object Registry interfaces; Documented the GENI Federated Clearinghouse service in a detailed fashion. That document, which is available at:  HYPERLINK "http://groups.geni.net/geni/attachment/wiki/DigitalObjectRegistry/GFC%20Technical%20Reference.pdf" http://groups.geni.net/geni/attachment/wiki/DigitalObjectRegistry/GFC%20Technical%20Reference.pdf, discusses the data model, design choices made, and the API of the deployed service; Coordinated with the I&M Working Group in the design and specification of a Measurement Data Archive service during the ninth GENI Engineering Conference held in Washington, DC; 1.a. Milestones achieved: We have documented the design details of the Measurement Data Archive prototype. (Attached to this report). The document discusses the overview of the prototype, summarizes the architecture and the design choices made to date for building the prototype. As we continue to design and develop the prototype, we will document any major accomplishments or assumptions made. 1.b. Deliverables: During this quarter, we have made available the Measurement Data Archive prototype details on the GENI wiki page for our project. We have also delivered a technical reference of the GENI Federated Clearinghouse. 2. Description of Work Performed 2.a. Activities and Findings During This Quarter Measurement Data Archive Prototype The Measurement Data Archive Prototype will be designed following GENIs overarching goals for the Archive service, which is currently under design review by the I&M Working Group. We are currently developing a first prototype by making a few assumptions in order to quickly produce a service that GENI can validate by performing initial integration with ongoing I&M projects. The design document highlights some of the choices made for this prototype. We are currently developing the prototype using the Digital Object Repository and the Handle System technology that CNRI has made available to the public using open licenses. In order to meet some of the prototype requirements, we will be making a few updates to the Repository technology. Those requirements range from mapping system directories from the user workspace to digital objects in the repository, to mapping user accounts and permissions from the archive to ACL sets in the repository. In the next few weeks, we will upgrade the Repository functionality to meet those requirements. Production Services We are in discussion with Tom Mitchell and Harry Mussman on the potential role of a GENI Registry, which would exist alongside the GENI Clearinghouse. The use of such a Registry would be to monitor and track the current state of GENI entities including hardware resources, etc. While the role of a Clearinghouse is to allow experimenters to reserve and use resources held by organizations, the requirement of a Registry is, strictly speaking, not within the scope of a Clearinghouse, although very useful in streamlining some of the activities experimenters have to perform in order to reserve resources for experiments. The GENI Federated Clearinghouse (GFC), on the other hand, is a federated service that primarily acts as a Registry of information pertaining to resources, and delegates the actual clearinghouse functionality to the specific clearinghouse function (e.g. ProtoGENI clearinghouse) for resource reservation, etc. Given the correlation of the GFC functions and the GENI Registry functions, it became evident that the development of the GENI Registry function be based on the CNRIs efforts. Consequently, we have documented the capabilities, data model, design approach, and API of the GENI Federated Clearinghouse service for the benefit of the GPO and the GENI members. We also continued to support and perform the maintenance of the GENI Federated Clearinghouse and the Distributed Hash Table services. 2.b. Project Participants CNRI has discussed its project activities with a number of other GENI participants, but all work done this quarter was done by CNRI alone or with the cooperation of ProtoGENI and Million Node GENI personnel. Names and email addresses of CNRI participants are available on the GENI wiki page for the project. Robert Ricci, Leigh Stoller, and Srikanth Chikkulapelly from ProtoGENI and Justin Cappos from Million Node GENI collaborated with us during this quarter. 2.c. Publications No publications were produced this quarter. CNRI displayed a poster during the seventh GENI Engineering Conference. CNRI released a technical reference document on the GENI Federated Clearinghouse service. Those documents are available on the GENI wiki page for the project. 2.d. Outreach Activities Larry Lannom, Giridhar Manepalli, Jim French, and Christophe Blanchi attended the GENI Engineering Conference held in Washington, DC, and participated in a variety of discussions with GENI members and System Engineers. Larry Lannom is also involved in discussions with the DataCite (http://datacite.org/) group, an international consortium to establish easier access to scientific research data, in the evolution and specification of a standard for describing and interacting with datasets in a standard fashion. The Measurement Data Archive could leverage this connection for attaining global interoperability across related technologies. Giridhar Manepalli is supervising an undergraduate student from University of Virginia, who will be responsible for some of this years GENI work. 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