[問題] 2題計算機概論

看板Grad-ProbAsk作者 (pipi)時間17年前 (2009/04/07 23:37), 編輯推噓1(1推 0噓 1→)
留言2則, 1人參與, 最新討論串1/2 (看更多)
1. The execution time for one program is 100 ns, and multiplication instruction takes 80% of the execution time.If the new execution time is 25 ns, how to improve the speed of multiplication instruction? (A)2times (B)4times (C)8times (D)16 times (E)none of the above 2.One instruction cycle takes 40ns.Among them, IF(10ns),DE(5ns),EXE(10ns),MEM(10ns),WB(5ns). Assume 100 instruction,hoe many times is the speed of pipelining method over traditional method? (A)4.85 (B)2.85 (C)3.85 (D)3.95 (E)none of the above 請幫忙解題拜託了! 不知道要從何下手的兩題... 謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.161.79.219
推
04/08 10:25, , 1F
1. Amdahl's law (D)
04/08 10:25, 1F
→
04/08 10:26, , 2F
2. (C)
04/08 10:26, 2F
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