Question: Computer architecture-related 3 Directory protocols are more scalable than snooping proto- cols because they send explicit request and invalidate messages to those nodes that have

Computer architecture-related

3 Directory protocols are more scalable than snooping proto- cols because they send explicit request and invalidate messages to those nodes that have copies of a block, while snooping protocols broadcast all requests and invalidates to all nodes. Consider the eight-processor system illustrated in Figure 5.37 and assume that all caches not shown have invalid blocks. For each of the sequences below, identify which nodes (chip/processor) receive each request and invalidate. (10 pts each) (a) PO,0: write 100

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