[Insight-users] ITK_USE_OPTIMIZED_REGISTRATION_METHODS

[Luis Ibanez]

Hi Michiel,


1) Yes, there are other interesting options that become
     available when you turn ON  the Review directory.

     unfortunately they are not documented.

     You can find them by diving into the top level
      CMakeLists.txt file, and searching for REVIEW

     They are:

a) ITK_USE_REVIEW_STATISTICS
b) ITK_USE_OPTIMIZED_REGISTRATION_METHODS
c) ITK_USE_CONSOLIDATED_MORPHOLOGY
d) ITK_USE_TRANSFORM_IO_FACTORIES



2)  ITK doesn't currently support GPUs.

      However, there are multiple groups working on
     GPU support that gets integrated with ITK.

     Do you have something particular in mind ?



   Regards,


          Luis


--------------------------------------------------------------------
On Mon, Mar 8, 2010 at 6:54 AM, michiel mentink
<michael.mentink at st-hughs.ox.ac.uk> wrote:
> 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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