Structures and operations of integrated circuits having network of configurable switches

An integrated circuit, comprising:

• a switch having:
• a first number of input ports;
• a second number of output ports;
• a configurable crossbar to selectively couple the first number of input ports to the second number of output ports;
• a computation engine coupled to the first number of input ports, the second number of output ports, and the crossbar, to perform an operation and provide results of the operation to a first group of output ports of the second number of output ports;
• and
• one or more registers to selectively configure the first number of input ports and the configurable crossbar, to enable the first number of input ports to selectively pass data to the computation engine to supply the computation engine with operands of the operation, and the computation engine to selectively route results of the operation to the first group of output ports of the second number of output ports, or to enable the first number of input ports to pass through data to a second group of output ports of the second number of output ports;
• wherein the switch together with other switches forms a network of switches to perform a sequence of operations according to a structure of a collective tree, and the operation performed by the computation engine corresponds to an operation represented by a node of the collective tree.