In parallel computer architectures, a systolic array is a homogeneous network of tightly coupled data processing units called cells or nodes. Wikipedia

A term used in computer architecture Wikipedia Disambiguation

In parallel computer architectures, a homogeneous network of tightly coupled data processing units (DPUs), each of which independently computes a partial result as a function of the data received from its upstream neighbors, stores the result within itself, and passes it downstream. Wiktionary