[Eeglablist] general solution for memory problems?

[Andreas Romeyke]

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Hi Brian,

Brian Murphy schrieb:
> But, presumably this could be automated. So, perhaps something like this
> would work:
>  - determine the largest contiguous piece of RAM available to Matlab (I
> understand from previous posts that it is contiguous RAM rather than
> total RAM that matters), lets call this A(vailable)
>  - estimate the total memory needed for the final imported data (in my
> experience, it seems to be the raw filesize by a factor of three) - F(inal)
>  - then the temporary space available for conversion T(emp) is A-F
>  - then determine how big a fraction of the input file can be dealt with
> at a time - divide the Temporary space by the peak conversion factor C
> (again, in my experience, more than 10 times the original filesize of
> RAM is required - what is other people's experience?): T/C
>  - then split the time-course of the original file (of size O) into O/C
> pieces.
>  - load these pieces in
>  - merge them
>  - discard the pieces
>
> Any comments? I am new to Matlab and EEGLAB, so much or all of what I've
Under Linux my workaround is to add swapspace temporarily.

In the near(?) future I expect that EEGlab will also run under GNU
Octave (http://www.octave.org). In my experiences Octave does not have
such a memory problem like Matlab, I think.


Bye Andreas

- --
Software Developer / Dipl. Inform. (FH)
Max Planck Institute for Human Cognitive and Brain Sciences
Department of Psychology
Stephanstr. 1a, 04103 Leipzig, Germany

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