A massively parallel processor (MPP) is a single computer with a very large number of networked processors. MPPs have many of the same characteristics as clusters, but they are usually larger, typically having "far more" than 100 processors.[26] In an MPP, "each CPU contains its own memory and copy of the operating system and application. Each subsystem communicates with the others via a high-speed interconnect."[27]
Blue Gene/L, the fastest supercomputer in the world according to the TOP500 ranking, is an MPP.
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