GRID ARCHITECTURE

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GRID ARCHITECTURE
Chintan O.Patel
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What is Grid ?
"...a flexible, secure, coordinated
resource-sharing among dynamic collections of
individuals, institutions, and resources." - Ian
Foster
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• 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.

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Layered Grid Architecture
GRID Protocol Architecture
Internet Protocol Architecture
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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.
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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.
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Classification of Applications

• Distributed Supercomputing
• High-throughput
• On-demand
• Collaborative

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The TERAGRID
www.teragrid.org
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Implementing the Grid
Middlewares

• Globus
• Condor
• PUNCH
• Legion

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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

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References

• Future of Grid http//access.ncsa.uiuc.edu/witg
  /
• Grid Applications http//www.gridcomputingplanet.c
  om/resources/article/0,,3311_944961,00.html
• 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/resea
  rch/papers.html)
• http//www.escience-grid.org.uk/docs/gridtech/grid
  arch.htm