16 Big Data: Techniques and Technologies in Geoinformatics
deterministic approach that is the oldest and, even today, the most common typeof
computer. Examples of SISD are older-generation mainframes, minicomputers and
workstations, and most modern PCs such as CRA1, CDC 7600 [24].
Single Instruction, Multiple Data (SIMD): This is a type of parallel computer
where all processing nodes execute the same instruction at any given clock cycle
and each processing unit can operate on a different data element. SIMD is best
suited for specialized problems characterized by a high degree of regularity, such
as graphics/image processing. Synchronous (lockstep) and deterministic execution
are achieved using two approaches: processor arrays and vector pipelines ...