Getting More Out Of Computers

Computing tasks can be performed by any number of processing schemes, some of which fall under the loose heading of grid computing.

Symmetric Multiprocessing (SMP)
A server computing system where two or more processors are managed by a single operating system. The processors share the same memory and input/output mechanisms.

Massively Parallel Processing (MPP)
A server computing system where a hundred or more processors work on different parts of a task. Each processor has its own operating system and memory.

Grid Computing
A scheme to take advantage of underused processors on corporate desktop and laptop computers. Tasks are broken down and assigned to individual processors by a master scheduler, much like MPP.

Utility Computing
Also known as a hosted grid. A company activates and deactivates resources as needed from a large information-systems facility. The customer is charged for the services it uses. It's a modern version of computer time-sharing.

Sources: Giga Information Group, Aberdeen Group