More on the message passing model Model the system as a graph Each node is a processor. Each edge is a bidirectional communication link. ·Synchronous systems Time proceeds in synchronous rounds. Each round lasts a fixed duration (e.g.,1 second). Nodes agree on beginning/ending of each round. one round ----十--- imMore on the message passing model • Model the system as a graph • Each node is a processor. • Each edge is a bidirectional communication link. • Synchronous systems • Time proceeds in synchronous rounds. • Each round lasts a fixed duration (e.g., 1 second). • Nodes agree on beginning/ending of each round. time one round