[Wien] Conroe benchmarks

[Gerhard Fecher]

Does the compiler make use of that flag ?

Ciao
Gerhard


-----Ursprüngliche Nachricht-----
Von: wien-bounces at zeus.theochem.tuwien.ac.at im Auftrag von Max Braun
Gesendet: Di 19.09.2006 09:28
An: A Mailing list for WIEN2k users
Betreff: Re: [Wien] Conroe benchmarks
 
Are the calculations reliable?

Intel has announced errors - the floating point inexact number flag is a 
serious fault for calculations.

http://download.intel.com/design/processor/specupdt/31327902.pdf

Intel will only repair the faults on a 6-month horizon.

is this a case of the computer multiplying your mistakes another order of 
magnitude faster?

Max Braun


On 18 Sep 2006 at 17:45, Michael Gurnett wrote:

The time was 131 seconds for OMP_NUM_THREADS=1 at 2.4 GHz

Michael


On Sun, 2006-09-17 at 17:34 +0200, Peter Blaha wrote:
> Seems to be a really great new (and cheap) processor.
> Could you send me some timing also with OMP_NUM_THREADS=1 !
> 2.8 GHz was overclocking ?
> 
> > Here are some benchmarks for the new Conroe E6600.
> > 
> > 103 seconds with E6600 @ 2.4Ghz
> > 88 seconds with E6600 @ 2.8Ghz
> > 
> > Ram was only ddr2 533 (recommended for system is 800) so these are
> > really slowing the system down.
> > 
> > other info
> > 
> > ifort 9.1.037 + cmkl8.1.1 OMP_NUM_THREADS=2
> > 
> > Michael
> > 
> > 
> > _______________________________________________
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> > Wien at zeus.theochem.tuwien.ac.at
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> > 
> 
> 
>                                       P.Blaha
> --------------------------------------------------------------------------
> Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna
> Phone: +43-1-58801-15671             FAX: +43-1-58801-15698
> Email: blaha at theochem.tuwien.ac.at    WWW: http://info.tuwien.ac.at/theochem/
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