INTER-CHIP INTERCONNECT PROTOCOL FOR A MULTI-CHIP SYSTEM

A multi-chip system includes multiple chip devices configured to communicate to each other and share resources. According to at least one example embodiment, a method of providing memory coherence within the multi-chip system comprises maintaining, at a first chip device of the multi-chip system, state information indicative of one or more states of one or more copies, residing in one or more chip devices of the multi-chip system, of a data block. The data block is stored in a memory associated with one of the multiple chip devices. The first chip device receives a message associated with a copy of the one or more copies of the data block from a second chip device of the multiple chip devices, and, in response, executes a scheme of one or more actions determined based on the state information maintained at the first chip device and the message received.