Re: [理工] [計組] write back / overflow
原文恕刪
清大的那堤問的memory bandwidth我覺得是指Cache和Main memory間的bus的bandwidth
除了write hit/miss有傳輸
另外 read miss也會有transcation發生在bus上,根據題目需要load 1 block
而bus一次只傳輸1word 所以需要兩次bus 傳輸
又因為題目有說a是使用write through的cache,所以我們不必去考慮dirty的問題
又採用write around的方式所以只會在memory修改
所以a
我的看法是
RM + WH + WM = 10^8(2x0.1x0.7 + 1x0.3x0.9 + 1x0.3x0.1) = 0.44x10^8
所以此cache的memory使用量為0.44
大家討論一下QQ
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.113.0.145
推
01/29 01:30, , 1F
01/29 01:30, 1F
→
01/29 01:44, , 2F
01/29 01:44, 2F
→
01/29 01:45, , 3F
01/29 01:45, 3F
→
01/29 01:47, , 4F
01/29 01:47, 4F
→
01/29 01:49, , 5F
01/29 01:49, 5F
→
01/29 01:50, , 6F
01/29 01:50, 6F
→
01/29 01:51, , 7F
01/29 01:51, 7F
→
01/29 14:49, , 8F
01/29 14:49, 8F
→
01/29 16:07, , 9F
01/29 16:07, 9F
討論串 (同標題文章)
完整討論串 (本文為第 2 之 2 篇):