[理工] Cache
這題其實是模考題目
我就拿出來問了
題目是這樣的 , X1,X2 are different values in the same block,
P1,P2 are processors using the write-invalidate the write-invalidate snooping
protocol.
time P1 P2 H/M
1 WriteX2
2 W X2
3 Read X1
4 R X1
5 W X2
6 R X1
答案是 M,M,M,H,H,M
我不知道他的流程耶,希望有高手能解答
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推
01/13 23:11, , 1F
01/13 23:11, 1F
→
01/13 23:12, , 2F
01/13 23:12, 2F
→
01/13 23:12, , 3F
01/13 23:12, 3F
推
01/13 23:13, , 4F
01/13 23:13, 4F
→
01/13 23:13, , 5F
01/13 23:13, 5F
→
01/13 23:14, , 6F
01/13 23:14, 6F
→
01/13 23:14, , 7F
01/13 23:14, 7F
→
01/13 23:17, , 8F
01/13 23:17, 8F
→
01/13 23:17, , 9F
01/13 23:17, 9F
→
01/13 23:43, , 10F
01/13 23:43, 10F
→
01/13 23:47, , 11F
01/13 23:47, 11F
推
01/13 23:50, , 12F
01/13 23:50, 12F
→
01/13 23:52, , 13F
01/13 23:52, 13F
→
01/13 23:54, , 14F
01/13 23:54, 14F
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