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Grid Computing

  • In Grid computing each resource of networked computer is shared with every other computer in the network. likeprocessing power, memory and data storage.
  • It can be as simpleas a collection of similar computers running on the same operating system or as complexas inter-networked systems comprised of every computer platform you can think of.
  • The grid computing concept isn't a new one. It's a special kind of distributed computing.
  • Every authorized computer would have access to  enormous  processing  power and storage capacity.


Benefits of Grid Computing

  • Making use of Underutilized Resources: Underutilized resources like memory, storage or processing power,can be shared to other authorised users.
  • Resource Balancing: The peak load can be shiftedto  free  machines in  the grid; and if the grid is fully utilized, the lowest priority work can be temporarily suspended.
  • Parallel CPU Capacity: Parallel jobs  can be run  on different processorsto finish  the task early.
  • Virtual resources and virtual organizations for collaboration: Organizations can share their resourcessuch as data, specialized devices, software, services,  and so on giving all of them virtual resources.
  • Access to additional resources: Additional resources like bandwidth of  the Internet can be usedfor data mining that have independent internet connections.
  • Management: Management is easy, when maintenance is required, grid load can be shifted to other machines.


Types of Resources

  • Computation: The most common resource is computation (Computing Cycle) provided by the processors.

primary ways to exploit the computation resources.

  • To run an existing application on grid rather than on local machine;
  • To run parts of application on parallel different processors; and


  • Storage: The second most common resource used in a grid is Data Storage known as Data Grid.
  • Communications: Communications within the grid are important for sending jobs and data to the grid. The bandwidth is a critical resource that can limit speed of  the grid.
  • Software and Licenses: The grid may have software installed that may be too expensive. These software can be shared amongst the grid users.
  • Special equipment: Grid may have different devices, capacities, and equipment. These resources can be used on grid by other users.


Application Areas of Grid Computing


  • Civil engineerscollaborate to design, execute, & analyze.
  • An insurance companymines data from partner hospitals for fraud detection.
  • An application service provideroffloads excess load to grid.
  • An enterprise uses grid to support e-Business workload.
  • Large-scale science and engineering projects.


Grid Computing Security:

Grid systems and applications require standard security functions which are authentication, access control, integrity, privacy and non repudiation.


Grid Computing Security

To develop security architecture, following constraints are taken  from  the characteristics of grid environment and application.

  • Single Sign-on: A user should authenticate once and should be able to use resources easily.
  • Protection of Credentials: User passwords, private keys, etc. should be protected.
  • Interoperability with local security solutions: Local and grid security  solution  must be compatible.
  • Exportability: The program should be exportable.
  • Secure group communication: Communication should be  secure  within  the group.
  • Multiple implementations: It should provide security to multiple sources.

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