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作者 Transfat 在 PTT [ Grad-ProbAsk ] 看板的留言(推文), 共799則
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7F推: 53我會寫false,A is real了我會假定都在real中,不可spl01/15 23:36
8F→: it就不可diagonalized01/15 23:36
2F→: 就是要讓被I/O中斷的thread早點回來執行,了01/15 23:36
1F推: 竟然考到這樣.. 我也是翻課本才看到B是Rt,Rd01/15 23:14
2F→: F那個ID/EX.MemRead 是在偵測有沒有lw-uss data hazard01/15 23:15
3F→: 如果有從memory讀資料,那就是lw-use,先確定是lw-use再01/15 23:15
4F→: 去判斷有沒有hazards01/15 23:16
5F推: X,Y是要選暫存器號碼,Y是ID/EX.Register.Rt,要來判斷01/15 23:26
6F→: lw的目的暫存器和他下面一個指令的來源暫存器有沒有01/15 23:26
7F→: hazard,所以Y=$501/15 23:26
8F→: 可以問這是幾年台科嗎01/15 23:27
9F→: X應該是sub的來源暫存器,所以是$5或$6,課本上有畫兩條01/15 23:28
10F→: 可是題目似乎X只有一條01/15 23:29
11F推: D的話,是連到register,所以是MEM/WB.Register.Rd,不過01/15 23:33
12F→: add在MEM/WB時沒有要forwarding,所以寫0(?)01/15 23:34
2F推: 不管是one-word-wide, two-word-wide, interleaved,01/15 22:29
3F→: send the address都只需要1 clock cycle01/15 22:30
4F→: interleaved可以加快memory access time(4個bank就加快01/15 22:30
5F→: 4倍,但是bus頻寬沒增加,所以還是要花4個clock cycles01/15 22:30
6F→: 去傳送data01/15 22:30
1F推: 我對3(a)的第二小題,H' has the same hash value in H01/15 22:49
2F→: 是在講假如H=k mod 7,Bucket有7個,H'也會有7個bucket的01/15 22:50
3F→: 意思嗎?你覺得呢01/15 22:50
4F推: 3(b)就是如果n=O(m), load factor=n/m=O(m)/m=O(1)就可01/15 23:00
3F→: 謝><01/15 18:55
1F推: 不是哦,題目那就是跟你說發生collision時候我要去找下01/15 16:41
2F→: 個的function是什麼,例如quadratic發生碰撞,我下一個01/15 16:41
3F→: 要去找+3*(1^2)=3位置,再碰撞再去找3*(2^2)的位置01/15 16:42
4F→: 不是每個quadratic都是用i的平方01/15 16:42
2F推: 次推01/15 16:09
35F推: 我還是有點不懂,為什麼singly linked list的Remove要01/15 14:40
36F→: O(n),而Doubly linked list只要O(1)呢01/15 14:40
37F推: 還有楓葉的singly linked list和doubly linked list的01/15 14:42
38F→: Search(L,k)為什麼是花O(log(n)),我不是sequential sear01/15 14:43
39F→: ch下去,假設worst case花O(n)嗎?01/15 14:43
55F推: 是啊難怪看起來怪怪的,應該只有sorted arrary可以Binary01/16 19:36
56F→: search01/16 19:36
9F→: 阿我想起來了,這些東西是CPU去設定device controller,01/14 23:06
10F→: Device controller再下command給DMA01/14 23:07