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[Octave-bug-tracker] [bug #44380] Facing memory limit of less than 1 GB


From: Dan Sebald
Subject: [Octave-bug-tracker] [bug #44380] Facing memory limit of less than 1 GB
Date: Sun, 01 Mar 2015 18:05:21 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:18.0) Gecko/20100101 Firefox/18.0 SeaMonkey/2.15

Follow-up Comment #8, bug #44380 (project octave):

OK, so in comment #5 you used 3.6.4 and could not allocate the equivalent of
(assuming four bytes per double vector value, although maybe it should be
eight bytes for 64-bit, not that important because it's a rough guess) 4*256MB
or 1GB memory.  In comment #7 you used 3.8.2 and was able to go a little
further with the vector size, but still nowhere near the amount of memory on
your system.  Would Windows fragmentation be that bad?

I doubt the "Run in separate memory space" has any bearing on this.  It sounds
like that is for throw-back programs that are 16-bit (DOS) and should still be
runnable under Windows:

http://www.sevenforums.com/tutorials/13239-run-command-add-run-separate-memory-space.html

Apparently there were limitations in DOS such that apps couldn't really use
features of modern OS's.

The reason you can't uncheck the box is that your compiled Octave is 64-bit
and its the modern OS so automatically is run in its own separate memory
space.  That's my takeaway, as I'm not a Windows user.

At the same time, you might be right to look for an OS-related configuration
related to memory.  Again, fragmentation of what should be at least 30 GB of
Memory seams odd.  You could try stretching/maxing memory usage in other
applications, say an editor or a spreadsheet.  Just copy the whole contents
and paste twice, repeat--something like that.

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