[Wien] Benchmark on Xeon 5140, SMP 4 cores: 2chips, 2cores/chips

[Laurence Marks]

I would suggest turning on the compiler specific optimizations -a???,
they can have 10% or more of an effect

On 10/23/06, Florent Boucher <Florent.Boucher at cnrs-imn.fr> wrote:
>
>  Dear Peter and Wien user,
>  I have been able to have an access to a Xeon (5140) computer 2 chips/2cores
> per chip
>  Detail is below:
>
>
> - bi-Xeon 5140 (dualcore à 2.33Ghz, 64 bits, 4Mo de cache partagé)
>
> - 4 Go de mémoire FBDIMM PC5300 667 Mhz
>
> - FSB 1333MHz        Lapw1c has been compiled with intel fortran:
>  FOPT =  -FR -mp1 -w -prec_div -pc80 -pad -ip
>  BLAS/LAPACK (goto_core2-1.08)
>  $(FOPT) -L../SRC_lib -llapack_lapw
> -L/home/florent.boucher/GotoBLAS -lgoto
>
>  Here are the results on the official WIEN benchmark:
>  1 k-point (OMP_NUM_THREADS=1, only 1 core used):                     134s
>  2 k-points in parallel at the same time (2 of the 4 cores are used): 145s
> (efficiency = 92%)
>  4 k-points in parallel at the same time (4 of the 4 cores are used): 184s
> (efficiency = 73%)
>
>  One see effectively that Xeon 2.33 are about 1.6 faster than Opteron 2.2
> but the ratio decrease to 1.3 if one compares the performance on a fully
> loaded system.
>
>  I hope it helps.
>  Regards
>  Florent
>
>  PS: for those that will be interested in VASP serial (same compiler, same
> BLAS library), the ratio found is 1.17 in favor of the Xeon
>
>
>  --
> -------------------------------------------------------------------------
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> | Institut des Matériaux Jean Rouxel |
> Mailto:Florent.Boucher at cnrs-imn.fr |
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>


-- 
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2220 N Campus Drive
Northwestern University
Evanston, IL 60208, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
email: L-marks at northwestern dot edu
http://www.numis.northwestern.edu