[Insight-users] ITK_USE_OPTIMIZED_REGISTRATION_METHODS

[michiel mentink]

Dear Luis,

thank you, instead of going to the binary directory, I went to the source
directory,
then built ITK and then did a build install. Compiling and building went
okay after a few tries.

1) I did however see some comment in the build about having to use adjusted
function calls
    in order to profit from the improved registration methods.
   "add some new calls to these components." There are two examples in the
/review directory,
    but I couldn't really find anything useful there. Is there some more
documentation available
    somewhere?

2) Are there any other interesting options that come available when
"use_review" is enabled?
   Is there documentation about that somewhere?

3) Now that optimization comes up, are there any options for GPU use in ITK?

cheers,

Michael

On Sat, Mar 6, 2010 at 7:19 PM, Luis Ibanez <luis.ibanez at kitware.com> wrote:

> Hi Michiel,
>
>
> 1) You enable this variable by rerunning CMake in the
>     binary directory of ITK, and going to the "Advanced"
>     mode.
>
>
> 2)  You must first enable the variable
>
>                 ITK_USE_REVIEW
>
>     Then you will see the option
>
>     ITK_USE_OPTIMIZED_REGISTRATION_METHODS
>
>
> 3) This flag enables the use of Multi-Threaded metrics,
>     that will take advantage of your multi-processor, and
>     multi-core machines. In principle, your registrations
>     will run N-times faster, where N is equal to the number
>     of physical cores in your computer.
>
>
> 4)  One of the pitfalls is increased memory consumption.
>
>     You should monitor your memory use as your use
>     these classes.
>
>
>
>    Regards,
>
>
>            Luis
>
>
> ---------------------------------------------------------------
> On Thu, Mar 4, 2010 at 11:38 AM, michiel mentink
> <michael.mentink at st-hughs.ox.ac.uk> wrote:
> >
> > Browsing through a registration example, I found the variable
> > ITK_USE_OPTIMIZED_REGISTRATION_METHODS
> > that enables multithreading.
> >
> > Where is that variable set? In CMakeLists.txt?
> > The advantage I presume is increased speed. Are there any pitfalls?
> >
> > cheers, Michael
> >
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