scalar processor


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Related to scalar processor: Vector processor

scalar processor

[′skā·lər ′prä‚ses·ər]
(computer science)
A computer that carries out computations on one number at a time.

scalar processor

A CPU that performs computations on one number or set of data at a time. Most computers have scalar CPUs. A scalar processor is known as a "single instruction stream single data stream" (SISD) CPU. Contrast with vector processor. See scalar.
References in periodicals archive ?
Critical to this capability are high-performance three-dimensional graphics workstations with multiple scalar processors having total floating-point power of hundreds of megaflops; operating systems that support regularly scheduled preemptive lightweight threads, so that processes are reliably and regularly scheduled; and very large (more than 10 gigabytes) physical memory capability.
Multi-core CPU designs increase the number of processors in a system, but still employ traditional scalar processors that cannot effectively exploit the parallelism in many computations.
Members of the Fujitsu VP-2000 series [4] also have separate vector and scalar processors, as did their predecessors, the VP-200 and VP-400.
Other approaches to large multiprocessors do not have vector facilities, and hence may not be viable or performance/price competitive for highly vectorized applications since automatic compilation or parallel constructs to use a large number of scalar processors don't appear to offer the speed of the vector approach for these applications.