[理工] [計組] 記憶體-AMAT

作者: jinniw43805 (Mg鎂)   2015-07-28 16:43:19
The AMAT has three components: hit time, miss rate ,and miss penalty.For each
of the following cache optimizations,indicate which component of the AMAT
equation is improved.
題目:
(1)
Using a second-level cache
課本解答:
miss penalty
我的想法:
來源:張凡
我是以為second-level cache 是比較關心在減少miss rate 的,還是我解讀題目哪裡有
誤?
感謝各位先進
作者: A4P8T6X9 (殘廢的名偵探)   2015-07-28 17:58:00
Second level 是在減少懲罰
作者: pathy (pathy)   2015-07-29 14:51:00
second-level cache設計原則確實是減少miss rate
作者: jinniw43805 (Mg鎂)   2015-07-29 14:52:00
那這題的答案是...
作者: pathy (pathy)   2015-07-29 14:52:00
但 USE second-level cache這項技術是為了減少miss penalty
作者: pathy (pathy)   2015-07-29 14:57:00
使用second cache要想解決的事情,和為了達到這個目的,要怎麼設計L1,L2 cache,是2件不同的事情
作者: A4P8T6X9 (殘廢的名偵探)   2015-07-29 16:44:00
second level 的 hit rate 很慘烈唷,不會減少miss rate

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