Definition
Collective communication is communication that involves a group of processing elements (termed nodes in this entry) and effects a data transfer between all or some of these processing elements. Data transfer may include the application of a reduction operator or other transformation of the data. Collective communication functionality is often exposed through library interfaces or language constructs. Collective communication is a natural extension of the message-passing paradigm.
Discussion
Introduction
Many commonly encountered communication patterns and computational operations involving data distributed across sets of processing elements (nodes) can be represented as collective communicationin which all nodes in a (sub)set of nodes collaborate to carry out a specific data redistribution or data reduction operation. Making such operations available in parallel programming languages, interfaces, or libraries has a...
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van de Geijn, R., Träff, J. (2011). Collective Communication. In: Padua, D. (eds) Encyclopedia of Parallel Computing. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-09766-4_28
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DOI: https://doi.org/10.1007/978-0-387-09766-4_28
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