Re: AMD Phenom: phenomenally slow

>Dean,
>
>>> 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).
>>
>>in your notation i'm getting 4/8/2 from my 9600 ... that's a pretty
>>weird
>>problem you've got there!
>
>OK, making progress then!  So, your Phenom 9600 can do more than 2
>flops/cycle
>in double precision?  Have you installed ATLAS on the machine, and if
>so
>can you post your "make time"?
>
>On my machine, I have installed ATLAS, ACML, and Goto BLAS, and all
>post the
>2/4/x numbers.
>
>I was beginning to believe the machine really had 2/4/1, based on the
>fact
>I sent in an AMD tech help request two days ago and still had not
>recieved
>an answer . . .
>
>I guess I will try updating my BIOS, as its about the only thing I
>can imagine
>having this weird affect.

>
>Thanks,
>Clint
>
>**************************************************************************
>** R. Clint Whaley, PhD ** Assist Prof, UTSA **
>www.cs.utsa.edu/~whaley **
>**************************************************************************
>
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