Re: AMD Phenom: phenomenally slow

> Guys,
>
> I just got my hands on a Phenom X4.  My understanding was this was the desktop
> version of the 3rd gen opteron (K10h).  I expected it to have the same FPU
> peak: 4 flops/cycle double SSE, 8 flops/cycle single SSE, 2 flops/cycle x87.
>
> However, all my tests indicate it is 2/4/1 (I installed the Goto BLAS as well,
> and they also run at 1/2 speed compared to opteron).  The Athlon-64 was 2/4/2,
> so it appears to be much crappier than the previous generation hardware.
> Does anyone have any insight here?  The AMD techdocs all lead me to believe
> 4/8/x (no mention of x87, so crippling that is not as suprising).
>
> ?
> Clint
>
> **************************************************************************
> ** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
> **************************************************************************
>
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