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Why is the bidirectional ring an advantage over point-to-point? Isn't the bidirectional ring a connection topology for the cores?


In a point-to-point system, the message could need to be passed between different points on the network. For example, to send a message from Processor 1 to 4, you might need to send a message to 2, which sends a message to 3, which sends a message to 4. This creates some delay and overhead as each processor must forward on the signal.

In a ring configuration, the message can travel to all processors with no need to be forwarded by a processor.