[Insight-developers] Not Really Parallel Build

[Gaëtan Lehmann]

Le 12 nov. 09 à 11:03, Kevin H. Hobbs a écrit :

> On 11/12/2009 04:25 AM, Kevin H. Hobbs wrote:
>> [kevin at bubbles Insight_Build]$ CTESTCVS=~/kitware/CMake_Build/bin/ 
>> ctest
>> [kevin at bubbles Insight_Build]$ time -p $CTESTCVS -Q; time -p  
>> $CTESTCVS
>> -j2 -Q; time -p $CTESTCVS -j4 -Q; time -p $CTESTCVS -j8 -Q; time -p
>> $CTESTCVS -j16 -Q;
>>
>
> I should have had more espresso before I hit send.
>
> The output was :
>
> real 441.40
> real 364.12
> real 399.79
> real 506.50
> user 246.13
> real 284.85


Your host was loaded by something else?
The execution time should decrease with the number of threads - that's  
not always the case here.

I found firefox (with ~ 20 tabs) to be quite bad for the performance  
for example!

Gaëtan


-- 
Gaëtan Lehmann
Biologie du Développement et de la Reproduction
INRA de Jouy-en-Josas (France)
tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
http://voxel.jouy.inra.fr  http://www.itk.org
http://www.mandriva.org  http://www.bepo.fr

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