Features
According to the "Defining the Grid: A Roadmap for OGSA Standards v 1.0", OGSA is:
- An architectural process in which the GGF's OGSA Working Group collects requirements and maintains a set of informational documents that describe the architecture;
- A set of normative specifications and profiles that document the precise requirements for a conforming hardware or software component;
- Software components that adhere to the OGSA specifications and profiles, enabling deployment of grid solutions that are interoperable even though they may be based on implementations from multiple sources.
"The Open Grid Services Architecture, Version 1.5" describes an OGSA grid in terms of the following capabilities:
- Infrastructure services
- Execution Management services
- Data services
- Resource Management services
- Security services
- Self-management services
- Information services
As of late 2006 an updated version of the OGSA Architecture document and several associated documents have been published, including the first of several planned normative documents, "Open Grid Services Architecture Glossary of Terms, Version 1.5". Development of conformant software is expected to follow rapidly once a critical mass of normative documents have been published.
The concept of OGSA is derived from work presented in the paper "The Physiology of the Grid" by Ian Foster, Carl Kesselman, Jeffrey M. Nick, and Steven Tuecke.
The Open Grid Services Infrastructure (OGSI) is related to OGSA, as it was originally intended to form the basic “plumbing” layer for OGSA. It has been superseded by WSRF and WS-Management.
Read more about this topic: Open Grid Services Architecture
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