[Insight-users] limit of memory load in itk programs?

[Luis Ibanez]

Hi Monica,


a) Is your machine a 64bits platform ?


b) Have you verified how far you can get by
    "manually" allocating memory ?

    with code such as:

      main(int argc, char * argv [] )
      {
      size_t numberOfBytes = atol(argv[1] );
      char * buffer = new char[numberOfBytes];

      delete [] buffer;
      return 0;
      }

    Please give it a try and let us know
    how many gigabytes you can actually allocate
    in this machine.



c) ITK have some limitations but they are pretty high.

    We run nightly tests that use up to 11Gb of RAM in
    some of the Image Registration framework tests.

    That's well above the 3.5Gb that you are reporting.


Let's start with characterizing your machine.

We can then try the large memory tests in ITK,
to see which ones can be run in your platform.


  Please let us know what you find from the test in (b).


      Thanks


         Luis


-----------------------
Monica Hernandez wrote:
> Dear itk users,
> 
> I am currently working with programs with high RAM memory requirements.
> I have observed that if I try to run a program with memory load superior
> to 3.5 Gbs I get this
> message
> 
> terminate called after throwing an instance of 'std::bad_alloc'
>   what():  St9bad_alloc
> 
> and my program crashes. I am working in a 8 Gbs RAM and 4 Gbs Swap
> Scientific linux machine.
> 
> Does anybody know if there exists any limitation for ITK executables or
> maybe  there is a hidden 
> constraint in my linux that makes these programs abort?
> 
> Thanks a lot!!
> _______________________________________________
> Insight-users mailing list
> Insight-users at itk.org
> http://www.itk.org/mailman/listinfo/insight-users
>