Stefano Tommesani

  • Increase font size
  • Default font size
  • Decrease font size
Home Programming MMX / iSSE latency

MMX / iSSE latency

The following table summarizes the latencies of MMX/iSSE instructions on the Intel Pentium III and Pentium 4 processors, and on the AMD Athlon processor:
 

 
Instruction Pentium III Pentium 4 AMD Athlon
MOVD mm,r32 1 2 3
MOVD r32,mm 1 5 5
MOVQ mm,mm 1 6 2
PACKSSWB / PACKSSDW / PACKUSWB mm,mm 1 2 2
PADDB / PADDW / PADDD 1 2 2
PADDSB / PADDSW / PADDUSB / PADDUSW mm,mm 1 2 2
PAND / PANDN/ POR / PXOR mm,mm 1 2 2
PCMPEQB / PCMPEQW / PCMPEQD mm,mm 1 2 2
PCMPGTB / PCMPGTW / PCMPGTD mm,mm 1 2 2
PMADDWD mm,mm 3 8 3
PMULHW / PMULLW / PMULHUW mm,mm 3 8 3
PSLLW / PSLLW / PSLLQ mm,mm/imm8 1 2 2
PSRAW / PSRAD mm,mm/imm8 1 2 2
PSUBB / PSUBW / PSUBD mm,mm 1 2 2
PSUBSB / PSUBSW / PSUBUSB / PSUBUSW mm,mm 1 2 2
PUNPCKHBW / PUNPCKHWD / PUNPCKHDQ mm,mm 1 2 2
PUNPCKLBW / PUNPCKLWD / PUNPCKLDQ mm,mm 1 2 2
EMMS 6 12 2
PAVGB / PAVGW mm,mm 1 2 2
PEXTRW r32,mm,imm8 2 7 7
PINSRW mm,r32,imm8 4 4 5
PMAX / PMIN mm,mm 1 2 2
PMOVMSKB r32,mm 1 7 6
PSADBW mm,mm 5 4 3
PSHUFW mm,mm,imm8 1 2 2


 

Latency the number of clock cycles that are required to complete the execution of all of the µops that form an instruction.
Throughput the number of clock cycles required to wait before the issue ports are free to accept the same instruction again.
Execution Unit the names of the execution units in the execution core that are utilized to execute the µops for each instruction.
Quote this article on your site

To create link towards this article on your website,
copy and paste the text below in your page.




Preview :

MMX / iSSE latency
Tuesday, 25 April 2000

Powered by QuoteThis © 2008
 
View Stefano Tommesani's profile on LinkedIn

Latest Articles

Castle on the hill of crappy audio quality 19 March 2017, 01.53 Audio
Castle on the hill of crappy audio quality
As the yearly dynamic range day is close (March 31st), let's have a look at one of the biggest audio massacres of the year, Ed Sheeran's "Castle on the hill". First time I heard the song, I thought my headphones just got
Necessary evil: testing private methods 29 January 2017, 21.41 Testing
Necessary evil: testing private methods
Some might say that testing private methods should be avoided because it means not testing the contract, that is the interface implemented by the class, but the internal implementation of the class itself. Still, not all
I am right and you are wrong 28 December 2016, 14.23 Web
I am right and you are wrong
Have you ever convinced anyone that disagreed with you about a deeply held belief? Better yet, have you changed your mind lately on an important topic after discussing with someone else that did not share your point of
How Commercial Insight changes R&D 06 November 2016, 01.21 Web
How Commercial Insight changes R&D
The CEB's Commercial Insight is based on three pillars: Be credible/relevant – Demonstrate an understanding of the customer’s world, substantiating claims with real-world evidence. Be frame-breaking – Disrupt the
Windows Forms smells funny, but... 07 April 2016, 15.38 Software
Windows Forms smells funny, but...
In the "2016 .NET Community Report" just released by Telerik, the answers to the question "What technology would you choose if building for Windows Desktop?" were as follows: So roughly half of new desktop developments would

Translate