[Pw_forum] Benchmarks (was Pentium-M versus Itanium)

[Aleksandr Shaposhnikov]

Dear Prof. Marzari, 
Here are benchmark results for my little cluster. 

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* Intel(R) Core(TM)2 Quad CPU Q6600  @ 3.20GHz, 8 MB 
   of total L2 cache, 1600 MHz front side bus
   8GB DDR2-1000 PC2-8000
* 2 nodes, 1chip/4cores/node.  Infiniband 10G  SDR network, Voltaire ISR9024M Switch,
 Mellanox InfiniHost III Lx HCA
 * Car-Parrinello code (espresso CVS 4.0)
 * ifort 10.1.011, mkl 10.1.014, internal QE fftw, openmpi 1.2.5 , OFED 1.3
   ______________________________________________________
   N-CPU(Nodes)  5 steps    10 steps    final   speedup
   ------------------------------------------------------
    1(1)         619s       1056s       437s      1.0
    2(1)         427s       733s        306s      1.43    
    4(1)         374s       641s        267s      1.64 
    8(2)         199s       330s        131s      3.34
   ______________________________________________________

######################################################################################

I have 4 total nodes ready, but can only test on 2 for now due to some
minor technical difficulties. Will add results for 4 nodes in 1-2 weeks.

Regards,
Alex

On Sat, 2008-03-15 at 05:06 -0400, Nicola Marzari wrote:
> 
> Dear All,
> 
> 
> we keep a log of timings for Q-E on:
> http://quasiamore.mit.edu/pmwiki/index.php?n=Main.CP90Timings
> 
> The results are all for CP, but there is also the equivalent
> script for PWSCF.
> 
> 			nicola
> 
> 
> 
> ---------------------------------------------------------------------
> Prof Nicola Marzari   Department of Materials Science and Engineering
> 13-5066   MIT   77 Massachusetts Avenue   Cambridge MA 02139-4307 USA
> tel 617.4522758 fax 2586534 marzari at mit.edu http://quasiamore.mit.edu
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