[Insight-users] Failed to allocate memory

[Nithiananthan, Sajendra]

I was in a situation similar to the OP, Zhihong, trying to use ITK based
Demons registration on larger images (~400MB). It failed spectacularly  on
32 bit Windows. Compiling and running on a 64 bit machine solved the
problem.
The peak memory was about 4.5 GB, which seems high (no histogram matching or
casting used). I had imported the images into ITK from VTK so perhaps that
explains some of the increased memory usage. Either way, it did run well and
gave me the results I would have expected (compared the output for a smaller
image to that from a 32bit machine). I will hopefully confirm later that
nothing strange is happening with memory usage.

Thank you for your input
-Sajendra


> -----Original Message-----
> From: Luis Ibanez [mailto:luis.ibanez at kitware.com]
> Sent: Thursday, March 27, 2008 4:13 PM
> To: Nithiananthan, Sajendra
> Cc: insight-users at itk.org
> Subject: Re: [Insight-users] Failed to allocate memory
> 
> 
> 
> Hi Sajendra,
> 
> 
> 
> The Status of ITK in Windows 64 is the following:
> 
> 
> 1) ITK builds Nightly on "redwall.kitware", which
>     is a Windows 64bits, running Windows Vista and
>     Visual Studio 2005.
> 
>     The build today has all 1306 unit test passing:
> http://www.itk.org/Testing/Sites/redwall.kitware/Win64-Vista-v
> s8-Release/20080327-0100-Nightly/Test.html
> 
>     The compilation produces zero errors and 156 warnings,
>     most of them in Third partylibraries:
> http://www.itk.org/Testing/Sites/redwall.kitware/Win64-Vista-v
> s8-Release/20080327-0100-Nightly/BuildWarning.html
> 
> 
> 
> 2) There are no specific CMake flags to enable.
>     Simply select the compiler:
> 
>           "Visual Studio 2005 - 64bits"
> 
>     when you configure the build for the first
>     time. Note the specific "64 bits" at the end.
> 
> 
> 
> 3) I'm not sure about the option of cross-compiling.
>     It may be possible. I know that CMake itself
>     supports and facilitates cross-compilation, but
>     I know of an effort at the Rensselaer Polytechnic
>     Institute for cross-compiling ITK in order to run
>     it in a BlueGene supercomputer, and that required
>     several changes to CMakeLists.txt files.
> 
> 
> 
> 
> To summarize:
> 
>      Yes, ITK is working on Windows 64 bits.
> 
>      Just configure with CMake and start
>      enjoying ITK   :-)
> 
> 
> 
> Please let us know if you encounter any problems.
> 
> 
>     Thanks
> 
> 
>       Luis
> 
> 
> 
> --------------------------------
> Nithiananthan, Sajendra wrote:
> > Hi Luis and others,
> > 
> > What is the current status of ITK on 64bit windows? I found 
> this post from a
> > year ago indicating (at the time) that there might still be 
> problems:
> > 
> http://public.kitware.com/pipermail/insight-users/2007-Februar
> y/021058.html
> > 
> > Also, is there any CMake flags that need to be enabled to 
> compile ITK for 64
> > bits or is it sufficient to just compile it on a 64 bit 
> machine? I assume
> > there is no way to cross-compile it from 32bit Windows for 
> a 64 bit machine?
> > 
> > Thank you
> > Sajendra
> > 
> > 
> > 
> >>-----Original Message-----
> >>From: insight-users-bounces at itk.org
> >>Subject: Re: [Insight-users] Failed to allocate memory
> >>
> >>
> >>Hi Zhihong,
> >>
> >>
> >>It is not surprising that you are encountering memory
> >>allocation problems for this example given the size
> >>of your images.
> >>
> >>
> >>Here is a short account of memory usage in the example
> >>
> > 
> > 
> > 
> >>This amounts to:                        5593 Mb
> >>
> >>        or about:                        5.46 Gb
> >>
> >>
> >>If you are using Windows 32 bits, you are limited
> >>to 2Gb for any given process.
> >>
> >>You would need a 64 bits machine with at least 6Gb
> >>in order to run this example in its current form.
> >>Preferably 8 Gb, since the operating system will
> >>take some RAM.
> >>
> >>
> >>
> >>     Regards,
> >>
> >>
> >>         Luis
> > 
> >  
> > 
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> > 
> > _______________________________________________
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> > Insight-users at itk.org
> > http://www.itk.org/mailman/listinfo/insight-users
> > 
> 

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