[Eeglablist] Memory errors linked to Java VM heap space, in addition to 64 Bit and RAM

[Jeff Maxwell]

Dear EEGLab Users,
Running 64 bit MatLab on a box with plenty of memory fixes most memory
errors.  But for loading extremely large EEG files in an atypical format,
this has not always proved sufficient, in my experience.  So if there is a
problem specifically when trying to load large data sets, it might be an
issue with the default Java VM heap space settings within MatLab, which can
easily be altered:

http://www.mathworks.com/support/solutions/data/1-18I2C.html

Simply create a file java.opts in the root MatLab folder, or your startup
directory if you don't have admin rights, and put a single text line in that
file indicating how much memory to allocate:  e.g., -Xmx4096m

Hope this helps for any problems that aren't resolved by the other threads.


Cheers,
Jeff Maxwell





On Mon, Aug 10, 2009 at 5:52 PM, Siamak Salari <salaris at mcmaster.ca> wrote:

> Dear Alexander
> I had the same problem. You will need to install a 64 bit version of matlab
> on a 64bit operating system. We have it installed in windows vista 64 bit
> ultimate version. it will allow you to read larger than 3 gb files.  you
> will need to install lots of ram too. In our case we have 8 gb of RAM and
> still running out of memory (if you want to read the whole dataset into the
> memory at once). I suggest you setup a system with around 16 gb of RAM
> (apprently DELL is selling such systems now).
>
> Cheers
>
>
> ***Siamak Salari*
> * **Ph.D. Candidate
> *
> * **Department of Chemical Engineering, McMaster University*
> * **1280 Main Street West,Hamilton, Ontario L8S 4L7,CANADA*
> * **E-mail: <Salaris at mcmaster>Salaris at mcmaster <Salaris at mcmaster.ca>.ca<Salaris at mcmaster.ca>
> *
> * **Fax: (905) 521 1350,  Tel: (905) 525 9140 Ext. 22008*
> **
>
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