AstroGrid-D Architecture Overview
The focus of the AstroGrid-D project lies in developing a middleware
which abstracts the grid resource handling and simplifies the grid
usage for the scientists. Seven main components, as seen in the
picture, are under development. In addition, we also provide a user
portal based on GridSphere and an alternative user API via GAT.
Information service, aggregates and integrates
metadata from different sources (file management, grid resources, job
management etc. ) within the Grid environment. ArchitectureWG2
Job Management, provides a meta-scheduler and a broker
deciding when and where a grid-job will execute. This also includes
advanced scheduling of jobs for robotic telescopes.
File Management, composes a unified view of the files
created and used by grid jobs. Handling of replicas and advanced
transfer mechanisms are also possible.
Data Stream Management, enables stream-based data processing between Grid resources.
Supports the integration of user-defined operators during run-time. For details, please see WG4Architecture.
Database Management, provides access to scientific databases using well-established
Grid standards. For details, please see WG4Architecture
Monitoring and Steering, provides
methods to query and potentially change the status of individual Grid jobs as well as
entire AstroGrid-D applications. For details, please see WG-6 Architecture.
Security and VO Managment, provides secure access to
grid enabled resources and concepts for authentication by building on
VO Management procedures. For details see VO Management and Security