Thread Subject: Matlab Memory Error Using zeros(9764,9764)

Hi,

I am getting Out Of Memory Error when i define a variable
Zeros(nvar,nvar) where my nvar=9764

What is my solution



Thanks

Raja

Reduce the size of nvar.

In article <g4iour$mbf$1@fred.mathworks.com>,
Raja Thappetaobula <thappeta@hotmail.com> wrote:

>I am getting Out Of Memory Error when i define a variable
>Zeros(nvar,nvar) where my nvar=9764

>What is my solution

http://matlabwiki.mathworks.com/MATLAB_FAQ#How_do_I_fix_22Out_of_Memory.22_problems.3F
--
  "The art of storytelling is reaching its end because the epic
  side of truth, wisdom, is dying out." -- Walter Benjamin

On Jul 4, 12:11=A0am, rober...@ibd.nrc-cnrc.gc.ca (Walter Roberson)
wrote:
> In article <g4iour$mb...@fred.mathworks.com>,
>
> Raja Thappetaobula <thapp...@hotmail.com> wrote:
> >I am getting Out Of Memory Error when i define a variable
> >Zeros(nvar,nvar) where my nvar=3D9764
> >What is my solution
>
> http://matlabwiki.mathworks.com/MATLAB_FAQ#How_do_I_fix_22Out_of_Memo...
> --
> =A0 "The art of storytelling is reaching its end because the epic
> =A0 side of truth, wisdom, is dying out." =A0 =A0 =A0 -- Walter Benjamin

You are trying to create an array which will use up approximately 762
megabytes. Now you might think you have that much memory on your
machine, but here is the other thing, that memory need to be a
contiguous chunk of memory.

One thing you can attempt to do is reduce the size of each element in
your array. By default zeros will return you arrays of double
precision variables, ie 8 bytes per element.

If you are storing only 256 shades of grey (for a B/W image for
example) then you can afford to use a single byte to store this
information!

ie :
data =3D zeros(9764, 9764, 'int8');

data will be only be 1/8th the size (< 100 MB).

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