[Insight-users] Changed behaviour using linux kernel 2.6.7 vs. 2.4.21

[Atwood, Robert C]

Dear itk/ linux-kernel users/developers:

I tried upgrading the linux kernel on the machine, but then my ITK based
application would throw an exception (unable to allocate memory for
image) when updating a ShrinkImageFilter , shrink factor 16, original
image 800x800x512 float -- this works with the 2.4.21 kernel and with
the new kernel it does not work, either with the exact executable or a
recompiled executable. I have tried recompiling , even recompiling itk
(though I suppose that the kernel version should't affect the object
code ?  )   I selected Bigmem = 64 in the 2.6.7, but the 2.4.21 is the
RedHat version 2.4.21-15.Elsmp, I am unsure what options it is compiled
with. However, it seems to recognize the 6gb installed memory. 
 

Unfortunately I have no idea whether this is an ITK problem or actually
a linux kernel problem , but I thought people might like to know; if any
guru has advice I could try some suggested tests to see what the problem
is -- within reason, as the time spent rebooting repeatedly adds up.

For now, I have just put the old kernel back. I have no urgent reason to
upgrade.

Hope this information is of some use,

Robert