1. GRID ARCHITECTURE Chintan O.Patel

2. CS 551 Fall 2002 Workshop 1 Software Architectures 2 What is Grid ? "...a flexible, secure, coordinated resource- sharing among dynamic collections of individuals, institutions, and resources." - Ian Foster

3. CS 551 Fall 2002 Workshop 1 Software Architectures 3 Why Grid ? The principle benefits that the Grid will bring are:  Enabling more effective and seamless collaboration of dispersed communities, both scientific and commercial.  Enable large-scale applications comprising of 1000s of computers, large-scale pipelines etc.  Transparent access to "high-end" resources from your desktop  Provide a uniform "look & feel" to a wide range of resources  Location independence of computational resources as well as data.

4. CS 551 Fall 2002 Workshop 1 Software Architectures 4 Application Fabric Connectivity Resource Collective Layered Grid Architecture GRID Protocol Architecture Link Internet Transport Application Internet Protocol Architecture

5. CS 551 Fall 2002 Workshop 1 Software Architectures 5 Fabric Layer Contains the resources that are to be shared. This include computational power, data storage, sensors etc. Connectivity Layer Contains the communication and authentication protocols required for Grid-specific network transactions.

6. CS 551 Fall 2002 Workshop 1 Software Architectures 6 Resource Layer Control the secure negotiation, initiation, monitoring, control, accounting, and payment of sharing operations on individual resources Collective Layer Contains protocols and services that are global in nature and capture interactions across collections of resources.

7. CS 551 Fall 2002 Workshop 1 Software Architectures 7 Classification of Applications  Distributed Supercomputing  High-throughput  On-demand  Collaborative

8. CS 551 Fall 2002 Workshop 1 Software Architectures 8 The TERAGRID www.teragrid.org

9. CS 551 Fall 2002 Workshop 1 Software Architectures 9 Implementing the Grid Middlewares Globus Condor PUNCH Legion

10. CS 551 Fall 2002 Workshop 1 Software Architectures 10 Technical Challenges  Predictability and robustness of accuracy and performance  Run time resource management  Support for multiplicity of resource environments  Security, access policies and payment mechanisms  Hidden complexities

11. CS 551 Fall 2002 Workshop 1 Software Architectures 11 References 1.Future of Grid : http://access.ncsa.uiuc.edu/witg/http://access.ncsa.uiuc.edu/witg/ 2.Grid Applications http://www.gridcomputingplanet.com/resources/article/0,,33 11_944961,00.html 3.The Physiology of the Grid: An Open Grid Services Architecture for Distributed Systems Integration. I. Foster, C. Kesselman, J. Nick, S. Tuecke, Open Grid Service Infrastructure WG, Global Grid Forum, June 22, 2002. (http://www.globus.org/research/papers.html)http://www.globus.org/research/papers.html 4.http://www.escience-grid.org.uk/docs/gridtech/gridarch.htm