This is specific to in the hypercube: Here, every processor is depicted by the set of nodes of the graph and the several arcs are represented with communication links. The nodes status can be busy, idle, sending, receiving etc. and are showed with the help of a specific color. An arc is drawn among two processors when message is sent from one node to another and is deleted when the message is received.
It shows the information about distribution of work among the processors and the effectiveness of the processors.