coarse grain - meaning and definition. What is coarse grain
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What (who) is coarse grain - definition

WIKIMEDIA DISAMBIGUATION PAGE
Coarse graining; Coarse grained; Coarse grain; Coarse-grained; Coarse-graining; Coarse-grain; Fine-grained; Fine grained; Granular; Data granularity; Granularizing; Granularization; Granulize

coarse grain         
Coarse-grained         
·adj Having a coarse grain or texture, as wood; hence, wanting in refinement.
granularity         
<jargon, parallel> The size of the units of code under consideration in some context. The term generally refers to the level of detail at which code is considered, e.g. "You can specify the granularity for this profiling tool". The most common computing use is in parallelism where "fine grain parallelism" means individual tasks are relatively small in terms of code size and execution time, "coarse grain" is the opposite. You talk about the "granularity" of the parallelism. The smaller the granularity, the greater the potential for parallelism and hence speed-up but the greater the overheads of synchronisation and communication. (1997-05-08)

Wikipedia

Granularity

Granularity (also called graininess), the condition of existing in granules or grains, refers to the extent to which a material or system is composed of distinguishable pieces. It can either refer to the extent to which a larger entity is subdivided, or the extent to which groups of smaller indistinguishable entities have joined together to become larger distinguishable entities.

Examples of use of coarse grain
1. Tobacco seeds rarely are found at archaeological sites because of their size _ smaller than a coarse grain of pepper _ and dry burial conditions, Archer said, but the well‘s watery, oxygen–deprived environment preserved one tobacco seed in excellent condition.