MPP (massively parallel processing) is the coordinated

processing of a program by multiple processors that work on

different parts of the program, using their own operating

systems and memory. Typically, MPP processors

communicate using some messaging interface. Up to 200 or

more processors can work on the same application. An

"interconnect" arrangement of data paths allows messages to

be sent between processors. Typically, the setup for MPP is

more complicated, requiring thought about how to partition

a common database among processors and how to assign

work among the processors. An MPP system is also known as

a "loosely coupled" or "shared nothing" system.
 
 

MPP systems are considered better than SMP systems for

applications that allow a number of databases to be searched

in parallel. These include decision support and data ware

housing applications.
 
 

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