[理工] 95東華資工 os&計組

看板Grad-ProbAsk作者InitialShuk (Shuk)時間16年前 (2009/04/08 16:27)推噓2(2推 0噓 3→)

留言5則, 4人參與討論串1/1

Assume that the instruction cache miss rate is 4% the data cache miss rate is 5%. a proccessor has a CPI of 2.0 without any memory stalls the miss penalty is 200 cycles for all misses, determine how much faster a processor would run with a perfect cache that never missed? Here,the frequency of loads and stores is 35%. 這種題目我常看到的不是問有miss狀態下平均CPI多少然後跟完全沒miss的比快幾倍不過這題居然問的是 perfect and never miss 而且題給的CPI也是without any memory stalls 請問高手這種題要怎麼解@@ -- -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.160.161.72

推

muta22

04/08 16:34, , 1^F

04/08 16:34, 1^F

可以的話請樓上解一下@@ 我問我同學他也覺得怪怪的 2+4%*200+5%*200*35%= 有miss的那沒miss的? 直接答案是2嗎 @@? ※ 編輯: InitialShuk 來自: 118.160.161.72 (04/08 16:41)

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ssccg

04/08 16:43, , 2^F

04/08 16:43, 2^F

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InitialShuk

04/08 16:55, , 3^F