Question: As a simple model of a bus-based multiprocessor system without caching, suppose that one instruction in every four references memory, and that a memory reference

As a simple model of a bus-based multiprocessor system without caching, suppose that one instruction in every four references memory, and that a memory reference occupies the bus for an entire instruction time. If the bus is busy, the requesting CPU is put into a FIFO queue. How much faster will a 64-CPU system run than a 1-CPU system?

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