Re: what arch do I use for comparison?

by Clint Whaley-2 :: Rate this Message:

Great for you. How about the output of cpuinfo for me?

>From math-atlas-devel-bounces@... Mon Jul 28 18:46:41 2008
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From: Mathew Yeates <myeates@...>
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Status: R

Thanks. Got reasonable results.

Clint Whaley wrote:

>> single precision double precision
>> ********************* ********************
>> real complex real complex
>> Benchmark % Clock % Clock % Clock % Clock
>> ========= ========= ========= ========= =========
>> kSelMM 590.6 546.4 313.1 295.6
>> kGenMM 97.9 97.3 97.5 97.5
>> kMM_NT 96.6 95.3 96.9 95.2
>> kMM_TN 97.0 95.3 96.7 95.1
>> BIG_MM 572.5 561.4 302.6 298.9
>> kMV_N 53.7 141.0 42.2 56.2
>> kMV_T 62.4 83.9 43.3 56.5
>> kGER 93.1 115.1 28.8 38.9
>>
>> IS it because I configured with
>> ../configure -b 64 -Fa alg -fPIC -D c -DPentiumCPS=3100
>> --prefix=/home/ossetest
>>
>
> Nope, nothing wrong with the configure line that I see. My guess is that
> configure doesn't recognize the chip due to changing model/CPU family
> values. What does your full cpuinfo look like?
>
> >From what wikipedia shows me, this is a Core2-based processor, so you
> should be able to compare against Core2Duo64SSE3.tgz.
>
> If you want to try to install using the Core2 architectural defaults, pass :
> -A 15
> to configure.
>
> For Core2-based systems, you will get substantially better double precision
> performance with 3.9.1 than you do with 3.8.2 (from the above, it looks
> like you are using 3.8.2).
>
> Cheers,
> Clint
>
> **************************************************************************
> ** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
> **************************************************************************
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