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Re: improving numerical applications performance
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Re: improving numerical applications performance


  • Subject: Re: improving numerical applications performance
  • From: Shawn Erickson <email@hidden>
  • Date: Tue, 18 May 2004 07:42:49 -0700

On May 18, 2004, at 6:10 AM, Amilcar Meneses Viveros wrote:

Thanks for your comments and suggestions, I'm gonna work on this. I really
hope that the program can be improved with Altivec.

In another hand, can G5's Altivec unit manage double data?

No not directly.

You may want to look over the following pages if you are going to play with a G5 or you want an idea of how to tweak GCC for better performing code (applicable to the G4, etc.). I would consider firing up Apple's shark tool (as the first page outlines) to view the quality of the machine code generated.

<http://developer.apple.com/technotes/tn/tn2086.html>
<http://developer.apple.com/documentation/ReleaseNotes/DeveloperTools/ GCC3.html>.

Finally the XL C/C++ compiler[1] can produce better code for PPC then GCC can, you may want to consider using it.

-Shawn

[1] <http://www-306.ibm.com/software/awdtools/vacpp/features/xlcpp- mac.html>
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References: 
 >Re: improving numerical applications performance (From: Amilcar Meneses Viveros <email@hidden>)

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