High Quality Content by WIKIPEDIA articles! A collective operation is a concept in parallel computing in which data is simultaneously sent to or received from many nodes. hey sorry i tooo don know. Common examples of collective operations are gather (in which data is collected from all nodes), scatter (in which a set of data is broken up into pieces, and a different piece is sent to all nodes), and broadcast (in which the same data is sent to all nodes). Parallel computing is a form of computation in which many calculations are carried out simultaneously, operating on the principle that large problems can often be divided into smaller ones, which are then solved concurrently ("in parallel"). There are several different forms of parallel computing: bit-level, instruction level, data, and task parallelism. Parallelism has been employed for many years, mainly in high-performance computing, but interest in it has grown lately due to the physical constraints preventing frequency scaling.

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