[Insight-users] speed of svd

William A. Hoffman billlist at nycap . rr . com
Thu, 20 Nov 2003 08:48:36 -0500


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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