Grid computing

Grid computing has used by many organizations like business, university, and many others. actually, it is a form of distributed computing to handle the computer's long running computational tasks. according to BOINC grid computing differs from volunteer computing in several ways which is the computing resources are able to trust such as one can assume that the PCs don't return results that are intentionally wrong, and that they don't falsify credit.furthermore, it does not need for screensaver graphics and client deployment is typically automated.

As stated in Wikipedia, a grid computer is  grid computer is multiple number of same class of computers clustered together. it is able to connect by using  a super fast network and share the devices like disk drives, mass storage, printers and RAM Grid Computing. Grid computing is to reach a common goal and to solve a single task by join the computers that are from multiple administrative domains.

the grid computing is applied for  computationally intensive scientific, mathematical, and academic problems through volunteer computing. likewise, commercial enterprises also use the grid computing  such as drug discovery, economic forecasting, seismic analysis, etc.

References:

http://boinc.berkeley.edu/trac/wiki/DesktopGrid

http://en.wikipedia.org/wiki/Grid_computing