[Insight-users] speed of svd

[Bing Jian]

PC:        Dell Inspiron 4150 laptop (WinXP, 512M, P4, 1.7G),
Compiler:  Visual C++ 6.0
Options:   Release mode

-- 
Best wishes,
Bing Jian
bjian at cise . ufl . edu


On Thu, 20 Nov 2003, William A. Hoffman wrote:

> How did you compile ITK?  What compiler and what options did you use?
> It may be a matter of compile flags.
>
> -Bill
>
>
> At 10:49 PM 11/19/2003, Bing Jian wrote:
>
> >Hi, everyone,
> >
> >    I assumed that C/C++ code would be faster than Matlab.
> >But to my surprise, I found that svd routine in matlab is much faster
> >than the one in vxl. I tried it on a 660*660 matrix, it took
> >matlab <5 seconds. While in using vnl_svd, it took about more
> >than 20 seconds.
> >   Does someone has an idea about this?
> >
> >   Thanks in advance!
> >
> >--
> >Best wishes,
> >Bing Jian
> >bjian at cise . ufl . edu
> >
> >
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> >Insight-users at itk . org
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>
>