Difference between array processor and multiprocessor?

Answer 1

an array processor can handle multiple data elements simultaneously,in a parallel fashion, but a multiprocessor handle multiple processes simultaneously which may include more than one data element in each process...

An array procesor is optimized for array operations, has its own set of instructions, large memory block moves, logical operations on many array elements, etc and may itself be multi-processor or massively parallel. It has an interface where a host loads memory locations with the array to be processed (or perhaps a data file), then the array processor uses its specialized structure to do what was asked of it on the array, then tell the host is done and the result may be found in memory locations or perhaps a data file. Many of the jobs supercomputers do are array operations, the specialized capabilities can cost thousands of dollar per CPU second but they can do array operations that might take years for slower general purpose computers.

An array procesor can also be smaller, a graphics processor handling the video display is an array processor.

A typical operation is move the image to the right, move all the pixels to the right..

A general purpose computer may be multi-processor (Intel's multi-core).