laker
2004-03-06, 01:06 AM
有人可以幫我解這一題嗎?
題目: Suppose that a single-chip microprocessor P operation at a clock frequency of 50 MHz, is replaced by a new model P', which has the same architecture as P but has a clock frequency of 75MHz.
(a)If P has a performance rating of p MIPS for a particular benchmark program Q. What is the corresponding MIPS rating p' for P'?
(b)P takes 250 seconds to execcute Q in a particular personal computer system C. On replaceing P by P' in C, the execution time of Q drops only to 220 seconds. Suggest possible reasons for this disappointing performance improvemnet.
小弟因為即將考研究所, 買了一本計算機組織; 但發覺似乎沒有直覺的解法,
故請教大家,
謝謝
贊助商連結
題目: Suppose that a single-chip microprocessor P operation at a clock frequency of 50 MHz, is replaced by a new model P', which has the same architecture as P but has a clock frequency of 75MHz.
(a)If P has a performance rating of p MIPS for a particular benchmark program Q. What is the corresponding MIPS rating p' for P'?
(b)P takes 250 seconds to execcute Q in a particular personal computer system C. On replaceing P by P' in C, the execution time of Q drops only to 220 seconds. Suggest possible reasons for this disappointing performance improvemnet.
小弟因為即將考研究所, 買了一本計算機組織; 但發覺似乎沒有直覺的解法,
故請教大家,
謝謝
贊助商連結