[Eeglablist] Out of memory

[Arnaud Delorme]

Dear Alexandre,

increasing virtual or swap memory will most likely not help because Matlab only seems to be able to allocate real physical non-paged memory.

The most affected operating system seems to be Windows 32-bit with recent versions of Matlab where even with more than 2Gb physical memory, it is sometimes impossible to open 100Mb files.

The solutions are
- buy even more RAM
- Close all programs, remove Windows services (Adobe etc…), reboot
- Change of OS (Windows 7 might seems to have less problems than Win XP)
- Try different memory manager “start Matlab from the DOS command line with matlab –memmgr fast option
- Use older versions of Matlab that behave better with 32-bit systems (how old?)
- Look at http://www.mathworks.com/support/tech-notes/1100/1107.html

Under OSx or linux, Matlab cannot allocated inactive memory. You may free it by tiping "du -sx /" (in OSx you will see the blue inactive memory decreasing).

Arno

ps: under Matlab 2010b Linux Fedora Core 64-bit, we have successfully allocated matrices of up to 74Gb.

On Nov 13, 2010, at 9:23 PM, Alexandre Lehmann wrote:

> Hello All,
> 
> Klados, when you say "Try to swap your physical memory from the hard drive.", you mean adding some pagfile in memory preferences in windows ? Or are you refering to another procedure or another OS ?
> 
> I did try to increase my virtual memory by creating a pagefile of 4Gb, but even 150Mb bdf files would still give an out of memory error.
> 
> Thanks,
> 
> Regards
> 
> Alexandre
> 
> 
> 
> On Thu, Nov 11, 2010 at 2:21 AM, Klados Manousos <mklados at med.auth.gr> wrote:
> Hello to all,
> 
> Both systems you menioned are running the same programes? Because one system may run in background applications that need more memory than the other....
> 
> Try to swap your physical memory from the hard drive... With that way i achieved to load big files in EEGLAB
> 
> 2010/11/9 Benjamin Kuhr <bkuhr at uni-osnabrueck.de>
> 
> Hi,
> 
> I tried to import a large *.bdf file, 614 MB. I get the "Out of memory" -
> message, but not on all computers and for some reason it seems as it does
> not depend on the actual memory. It works on a weaker system, but not on
> the current one, which has 3.8 GiB of memory and a Intel Core 2 Duo CPU
> R7500 @ 2.93 GHz.
> 
> Even on identical systems with the same hardware and same software I can
> load the file only on one of them. I tired it with Windows XP and Ubuntu
> 10 on the system mentioned above, no difference. Any suggestions?
> 
> Thanks in advance
> Benjamin Kuhr
> 
> 
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to eeglablist-request at sccn.ucsd.edu
> 
> 
> 
> -- 
> Manousos A. Klados
> PhD Candidate -- Research Assistant
> Group of Applied Neurosciences
> Lab of Medical Informatics
> School of Medicine
> Aristotle University of Thessaloniki
> P.O. Box 323 54124 Thessaloniki Greece
> _________________________________________________
> Tel: +30-2310-999332
> Fax:+30-2310-999263
> Website: http://lomiweb.med.auth.gr/gan/mklados
> 
> ________________________________________________________________
> Δρώ γιατί Αντιδρώ: Δεν τυπώνω αυτό το mail γιατί προστατεύω το περιβάλλον.
> Acting by Reacting: By not printing this e-mail I help protect the environment.
> ________________________________________________________________
> 
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to eeglablist-request at sccn.ucsd.edu
> 
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to eeglablist-request at sccn.ucsd.edu

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20101127/3d17f17f/attachment.html>