For faster navigation, this Iframe is preloading the Wikiwand page for FMA指令集.

FMA指令集

此條目需要精通或熟悉相关主题的编者参与及协助编辑。 (2014年8月28日)請邀請適合的人士改善本条目。更多的細節與詳情請參见討論頁
此條目需要擴充。 (2011年2月11日)请協助改善这篇條目,更進一步的信息可能會在討論頁扩充请求中找到。请在擴充條目後將此模板移除。

FMA指令集(英語:Fused-Multiply-Add,即积和熔加运算)是x86架构微处理器上的指令集。FMA指令集是128位元和256位元的流式單指令流多資料流擴充集(SSE)指令集,以进行积和熔加运算[1]FMA指令集允许建立新的指令并有效率地执行各种复杂的运算,可结合乘法与加法运算(即进行积和熔加运算),通过单一指令执行多次重复计算,从而简化程序,从而使系统能快速执行绘图、渲染、相片着色、立体音效,及复杂向量运算等计算量大的工作。現時x86指令集中有兩種FMA指令集:

  • FMA4:是一種四元運算指令集,由AMD於2011年發表並首次使用於Bulldozer微架構上。其實作比FMA3指令集來得早。

参考文献

[编辑]
  1. ^ "FMA3 and FMA4 are not instruction sets, they are individual instructions -- fused multiply add. They could be quite useful depending on how Intel and AMD implement them" Woltmann, George (Prime95). Intel AVX and GIMPS. mersenneforum.org. Great Internet Mersenne Prime Search (GIMPS) project. [27 July 2011]. (原始内容存档于2011-09-27). 

参见

[编辑]
{{bottomLinkPreText}} {{bottomLinkText}}
FMA指令集
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?