[Wien] Prescott and Extreme Edition

[L. D. Marks]

Thanks. I've noticed that the -axQ or -xQ  (Q depends on the version of
CPU) give about a 10% improvement. Your numbers match up pretty much with
what I get for a 3.4 P4 Northwood (rescaled by 3/3.4) indicating that the
Prescott is about the same, just hotter.

N.B., with the same ifc & mkl I noticed last week that -r8 appears to
break tetra; I cannot see why it should.

On Sat, 23 Oct 2004, Hitoshi Takamura wrote:

>
> > Does anyone have access to either or both a Prescott & Extreme Edition CPU
> > to do a Wien benchmark? It would be interesting to know how a Prescott
> > performs (I expect slower) and how much faster an Extreme Edition is
> > (is it worth the extra cost).
>
> I've performed a benchmark test for Prescott 3.0 GHz CPU. The results seem
> to be dependent on a "-xP" switch.
>
> Hardware + Compiler: P4 3.0 GHz (Prescott), ifort 8.1 + mkl7.0.1
>
> 1) OPTIONS = "-FR -mp1 -w -prec_div -r8 -pc80 -pad -ip -DINTEL_VML"
> 246.510u 0.700s 4:12.75 97.8%   0+0k 0+0io 762pf+0w
>
> 2) OPTIONS = "-FR -mp1 -w -prec_div -r8 -pc80 -pad -ip -DINTEL_VML -xP"
> 236.530u 0.650s 4:02.38 97.8%   0+0k 0+0io 780pf+0w
>
> I hope it helps.
>
> --
> Hitoshi Takamura
> Department of Materials Science
> Graduate School of Engineering
> Tohoku University
> Sendai 980-8579, Japan
> Phone & Fax: +81-22-217-7335
>
>
> _______________________________________________
> Wien mailing list
> Wien at zeus.theochem.tuwien.ac.at
> http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
>

-----------------------------------------------
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2225 N Campus Drive
Northwestern University
Evanston, IL 60201, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
mailto:L-marks at northwestern.edu
http://www.numis.northwestern.edu
-----------------------------------------------