Systems, methods, and apparatuses relating to configurable network-based dataflow operator circuits are described. In one embodiment, a processor includes a spatial array of processing elements, and a packet switched communications network to route data within the spatial array between processing elements according to a dataflow graph to perform a first dataflow operation of the dataflow graph, wherein the packet switched communications network further comprises a plurality of network dataflow endpoint circuits to perform a second dataflow operation of the dataflow graph.