Intel Skylake 單執行緒效能爆表，疑似具備反超執行緒功能

Margina

http://www.techbang.com/posts/25299-skylake-micro-architecture-single-threaded-performance-and-explosive-form-doubt-the-pulled-thread-function

via HKEPC Reader for Android

yjfoeg

佢都識講Intel未正式公佈Skylake有咩改進
而佢亦淨係得呢一項測試數據
加上睇返2345678線既成績, 呢個test既多線程本來就做得唔多好
根本唔可以作準~

Kundera

Been hearing this for a whole decade

Rumour of AMD in 2006:
http://techreport.com/news/10235 ... reading-coming-soon

Denial:
http://www.theregister.co.uk/2006/07/17/amd_reverse_ht_not_real/

Intel's version in 2010:
https://newsroom.intel.com/docs/DOC-1111

Here is source of the ongoing speculation, in fact they are still looking for an explanation:
http://www.heise.de/newsticker/m ... eading-2779793.html

Skylake's benchmark is all around but none of them suggest any remarkable improvement in single threaded performance. And there's no reason for intel not to advertise it if they can produce 2x higher IPC. The SPEC CPU 2006 score maybe the result of some sort of new AVX instruction being triggered (and a mixture of turbo core implementation). Intel is going to talk about the uArch in the coming IDF

cise4832

如果真係有
仲唔周圍唱?
-_-

yjfoeg

D人又話INTEL己經大幅拋離AMD, 每代都要蟻攔咁慢先可以吊住佢條命, 換取免受大量壟斷訴訟. 如果宜家突然又 ...
myricky 發表於 2015-8-19 09:21

樓主轉貼呢篇野 個所謂證據根本都唔係證據
純粹「單線程快過多線程」就話係有多核合併
但睇下4790K既成績就知道 個benchmark本身多線程效率極差, 又夠晒舊
新架構有特殊情況都唔知有咩咁出奇, 咁都可以話人係有「反超執行緒」, 夠晒厲害

akiro

如果有INTEL 早就講左了...科技網拿到ES時早有大事宣揚了..
不過我還......80%唔信...20%信....

B687

D人又話INTEL己經大幅拋離AMD, 每代都要蟻攔咁慢先可以吊住佢條命, 換取免受大量壟斷訴訟. 如果宜家突然又 ...
myricky 發表於 2015-8-19 09:21

依家大部份程式都優化多核
手機都用8核

有反超執行緒 都冇乜用

B687

樓主轉貼呢篇野 個所謂證據根本都唔係證據
純粹「單線程快過多線程」就話係有多核合併
...
yjfoeg 發表於 2015-8-19 10:19

你睇真d
Skylake單核190
Haswell四核150
如果沒有反超執行緒
即是Skylake快過Haswell五倍???

chanmingfu

D人又話INTEL己經大幅拋離AMD, 每代都要蟻攔咁慢先可以吊住佢條命, 換取免受大量壟斷訴訟. 如果宜家突然又 ...
myricky 發表於 2015-8-19 09:21

that is correct. intel said this skylake is like C2D. but now just + 5% performance.