[Insight-users] Memory Allocation Error in Java

[Luis Ibanez]

Hi Evert,

The Java virtual machine has a natural limitation to the amount
of memory made available its processes.

   http://java.sun.com/docs/hotspot/gc5.0/ergo5.html

You may want to first attempt to increase the memory made available
to your program by the virtual machine.

http://java.sun.com/j2se/1.5.0/docs/tooldocs/solaris/java.html

This can be done with the command line options for the "java"
command:

"   -Xmsn

     Specify the initial size, in bytes, of the memory allocation pool. 
This value must be a multiple of 1024 greater than 1MB. Append the 
letter k or K to indicate kilobytes, or m or M to indicate megabytes. 
The default value is 2MB. Examples:

        -Xms6291456
        -Xms6144k
        -Xms6m


-Xmxn
     Specify the maximum size, in bytes, of the memory allocation pool. 
This value must a multiple of 1024 greater than 2MB. Append the letter k 
or K to indicate kilobytes, or m or M to indicate megabytes. The default 
value is 64MB. Examples:

        -Xmx83886080
        -Xmx81920k
        -Xmx80m

"



If you still find memory allocation problems, you may want to add a
message to the file:

         Insight/Code/Common/itkImportImageContainer.txx

in line 186 in order to specify how much memory is trying to allocate.

It is likely that some of the signed/unsigned convertions from Java to
C++ is creating a situation where an obscene amount of memory is being
requested for an image.




Please let us know what you find.


    Thanks



        Luis



------------------------
Evert van Velsen wrote:

> Hi there,
> 
> when running my java-written ITK program, which I've combined with ImageJ,
> I received the following error:
> Error: java.lang.RuntimeException:
> c:\insighttoolkit-1.8.1\code\common\itkImportImageContainer.txx:186:Failed
> to allocate memory for image.
> 
> The input of the program is a 200 slice 3d-image (tiff-format) of 128x128,
> and the error occured when performing the ShapeDetectionLevelSetFilter
> with 200 seedpoints (one on each slice).
> I'm using ITK 1.8.1 with java 1.4.2_05
> 
> Does anyone know how I can fix this problem?
> 
> Thanks,
> 
> Evert
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