Re: IPv4 kernel messages (with MMX checksum)
Aaron Tiensivu (tiensivu@pilot.msu.edu)
Tue, 8 Sep 1998 19:58:05 -0400
> hm, nope. Even on the PII i can barely make it a win. The problem is that
> to generate IP checksums we have to do addition with carry - on the MMX
> engine which has no carry, no flags and no branch instructions and no
> effective ways of mixing integer and MMX instructions. Thus my code is
> quite tricky and it saturates the PII completely so i'm not surprised at
> all that it does not play well on a P5.
Does anyone know if AMD/IDC/Cysux's 3dnow! could be used and/or the pre-hyped
MMX2 will be a benefit?
I suspect 3dnow! might be able to do very non-3d items.
For example, the built-in support of WinAmp.
People tend to forgot the original MMX stood for Matrix Math eXtensions.. :)
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