[Insight-users] Failed to allocate memory for image

[Dženan Zukić]

Hi Sara,

I don't know whether this is the same or different problem, but when I tried
to do something with similarly large image (512x512x497), using double
precision internally (nearly 2GB), it constantly failed to allocate on
32-bit system, even though I had enough free memory. After spending some
time trying to figure out what was going on, I concluded that the image
fails to allocate because my memory space was fragmented - even though there
was enough free memory overall, there was no free block large enough into
which my image would fit. This problem is resolved by switching to 64bit
OS+app.

Regards,
Dženan

On Tue, Jul 20, 2010 at 01:45, Sara Rolfe <smrolfe at u.washington.edu> wrote:

> Hello,
>
> I am having trouble trying to resize a volume using SubsampleVolume.cxx
> from the /Examples/Filtering directory.  After checking the mail archives, I
> added filter->SetReleaseDataFlag( true ); to each of the filters.  I then
> replaced the RecursiveGaussianImageFilter with the
> GradientMagnitudeImageFilter since it requires less memory.  These fixes did
> not solve my problem.  I next commented out one filter at a time and found
> that I get the memory error when I include the ImageFileReader,
> CastImageFilter, and GradientMagnitudeImageFilter.
>
> Could you suggest any further fixes?  I am working on a Mac with 2G of
> memory.  The image I'm working with is 402 MB (1024x1024x402).
>
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