SIMD single instruction multiple

SIMD Single instruction, multiple data a model for concurrent computing in which the same instruction is applied simultaneously to multiple data items. 

SISD single instruction, single data stream SIMD single instruction, multiple data stream MIMD multiple instruction, multiple data stream. 

MIMD = multiple instruction multiple data MISD = multiple instruction single data SIMD = single instruction multiple data SISD = single instruction single data. 

Hardware can be classified various ways. We choose two classifications single instruction, multiple data (SIMD) and multiple instruction multiple data (MIMD). SIMD computers typically have many, usually low power, computing... 

During the early part of this decade, there was a vivid debate between proponents of MIMD (multiple instruction stream, multiple data stream) and SIMD (single instruction stream, multiple data stream) type parallel computers. This taxonomy, which stem from Flynn s classification [25,26] of possible computer architectures, can now be said to be mostly of historical and academic interest. 

It features Single Instruction Multiple Data (SIMD) technology, which enables one instruction to give instructions to several pieces of data rather than a single instruction per piece of data. 

SIMD Stands for single instruction multiple data. Computer with multiple processors each of which... 

Two main approaches are used to build parallel supercomputers SIMD (for Single Instruction Multiple Data) and MIMD (for Multiple Instructions Multiple Data). Whilst the former employs many processors simultaneously to execute the same program on different data, the latter employs several processors to execute different instructions on different data. Both approaches underpin different programming paradigms and have their own strengths and weaknesses. 

Load-Balancing Problem A finite-volume representation of a partial differential equation can be solved most efficiently by a single-instruction multiple-data (SIMD) computer system if the grid is partioned approximately proportionally for each... 

More limited versions of SIMD architectures are common today. Rather than simultaneously computing all results as is done in the CM-2, the more modern SIMD architectures pipeline data through one or more execution units and can achieve high computational rates due to the repetitiveness of the work involved. This arrangement is used in vector processors (for example, the Cray XI ). Also, modern microprocessors now have extensions allowing single instructions to perform identical operations on multiple pieces of data. Examples include Intel s Streaming SIMD Extensions (SSE) and Motorola AltiVec used in recent versions of the IBM POWER processor. 

SIMD. This Single instruction stream, multiple data stream or SIMD family employs many fine- to medium-grain arithmetic/logic units (more than tens of thousands), each associated with a given memory block (e.g., Maspar-2, TMC CM-5). Under the management of a single system-wide controller, all units perform the same operation on their independent data each cycle. 

Single instruction stream, multiple data stream (SIMD). Each processor operates in lock step, with an identical instruction stream but different data streams. 

MMX or SSE instruction set extensions [23] in x86 compatible processors are able to execute multiple operand streams on a single command and thus in a SIMD fashion. The instruction itself specifies the size of the operands and the operation. 

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