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Architecture

 
 
Production Grid Infrastructure WG (PGI-WG)
Group Information
Group Type: Working Group
Group Chair(s): Johannes Watzl, Morris Riedel
 
Group Description
The objective of this working group is to formulate a well-defined set of profiles, and additional specifications if needed, for job and data management that are aligned with a Grid security and information model that addresses the needs of production grid infrastructures.
 
Group Focus and Scope
The origin of this working group is from the Grid Interoperation Now (GIN) community group. The GIN-CG has representatives from production grid infrastructures (such as EGEE, OSG, NAREGI, NorduGrid, TeraGrid, NGS, etc) and supporting organizations (such as OGF-Europe, OMII-Europe, OMII-UK, etc.). Over the last two years the members of GIN that are working daily in world-wide production grids have been working within the OGF to explore the interoperability issues in:
• jobs submission and job monitoring
• data access and movement
• authentication and authorization
• information representation and discovery
As a result of this collaborative activity the GIN-CG now feels there is sufficient understanding and motivation within the group to define a set of profiles around a well-defined use case. This use case should use open standards from different areas of OGF to facilitate interoperability among production Grid infrastructures. This is the focus of this working group.


This basic use case identified in production Grids is as follows: on behalf of an authorized user, a tool interrogates the information system (representing a grid or a single resource), locates an optimal execution resource, submits the job to the execution resource, which in turn interprets the submitted job description and locates and fetches the necessary input data from a remote storage - also on behalf of the user. Upon the completion, the newly created data is uploaded to a storage resource where this user is authorized (as a member of a Virtual Organization), registered in the necessary data indexing catalogs, and the job record is updated in the accounting and monitoring system.

Thus the milestones this working group must meet are particularly ambitious due to the needs of the production Grid infrastructures. There is a need to come to a common proven end-to-end interoperable definition of the services and their interactions within the next 18 months for the European middleware developers. This development work will take place within this time period – we feel it is imperative to attempt to do this work within OGF.

Scope
The scope of this working group is restricted to dealing with job and data management issues found in production grid infrastructures that together use a limited number of security specifications and information models. The resulting Web service interfaces and schemas defined by this working group will be a set of profiles of open standards and specifications such as OGSA-Basic Execution Services (GFD.108), Job Submission Description Language (GFD.136), GridFTP (GFD.20), Storage Resource Manager (GFD.129), and efforts of the GLUE2 (GFD tbc) working group. The additional work bv this group will go beyond the current specifications and extensions to include an authentication and authorization model, an extended state model, an integrated resource and informational model, and a data transfer and storage model – all tuned to the use cases found in production grid infrastructures.

Goals
This group will deliver the following document:

* Production Grid Infrastructure Roadmap Document (GFD-I)
* Provides an overview of missing links between open standards and the fundamental motivation for standardization of the production grid infrastructure profiles
* Secure Job and Data Management Profile in Production Grids (GFD-R.P)
* Develop a job/data/security profile assuming an deployed computing endpoint is already known by an end-user
* Secure Information Profile in Production Grids (GFD-R-P)
* Allows a user to discover resources that are appropriate for their request and that they are authorized to access
* Secure Accounting Profile in Production Grids (GFD-R-P)
* Develop an accounting profile that allows services to securely update a service within information about the resources they have used on behalf of a user.
* Secure Monitoring Profile in Production Grids (GFD-R-P)
* Develop a profile that allows services to securely record in a service the progress of an activity.

 
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