關於MIMD

MIMD computersThis class of parallel computers is the most general and most powerful in Flynn’s classification. Here there are N processors, N streams of instructions and N streams of data. Each processor owns its control unit and its local memory, making them more powerful than those used in SIMD computers. Each processor operates under the control of an instruction stream issued by its control unit: therefore the processors are potentially all executing different programs on different data while solving different subproblems of a single problem. This means that the processors usually operate asynchronously. The MIMD model of parallel computation is the most general and powerful: computers in this class are used to solve in parallel those problems that lack the regular structure required by the SIMD model. On the downside, asynchronous algorithms are difficult to design, analyze and implement.