Echavarria Gregory, Maria Angelica wrote:
Dear Chris,
One of the machines I tested my app in is 64 bit and happened the same. The RAM
consumed by the OS and other processes is already included in the 2.2 I'm
telling... my app enters to work when the RAM is already consumed in ~600 MB in
the 3- 32 bit machines ... in the 64 bit machine was exactly the same only that
it started a little bit higher because it has windows 7... so should I
understand that there is nothing I can do for my app to use up more RAM?
Thanks for your time and answer,
Angelica.
M. Angelica Echavarria-Gregory, M.Sc., E.I.
Ph.D Candidate
University of Miami
Phone 305 284-3611
________________________________
From: Chris Kaynor [ckay...@zindagigames.com]
Sent: Friday, February 12, 2010 7:44 PM
To: Echavarria Gregory, Maria Angelica
Cc: python-list@python.org
Subject: Re: MemoryError, can I use more?
A 32 bit app can only use 4 GB of memory itself (regardless of the amount of
system ram), the OS claims some of this for the system, dlls occupy some of it,
etc. As such, the app can only really use a smaller subset (generally between 2
to 3 GB, depending upon the app and the OS).
Chris
On Fri, Feb 12, 2010 at 4:21 PM, Echavarria Gregory, Maria Angelica
<m.echavarriagreg...@umiami.edu<mailto:m.echavarriagreg...@umiami.edu>> wrote:
Dear group:
I am developing a program using Python 2.5.4 in windows 32 OS. The amount of
data it works with is huge. I have managed to keep memory footprint low, but
have found that, independent of the physical RAM of the machine, python always
gives the MemoryError message when it has occupied exactly only 2.2 GB. I have
tested this in 4 different machines, all with memory of 3 to 4 GB... I'm amazed.
Could any of you please help me to figure out how to change that limit? I typed
help(MemoryError) and it is a class itself, but that help told me nothing I can
use...
Thanks,
Angelica.
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There are three different limits at play here. Since you're still not
saying how you're "measuring" usage, we've all been guessing just which
one you're hitting. There's physical RAM, virtual address space, and
swappable space (swapfile on disk). Each reaches some limit in
different ways.
And there are probably a dozen different ways to measure "memory use,"
that get a dozen different answers. If you say which one you're using,
that gives "exactly 2.2 GB," maybe someone will be familiar with that
particular approach, and its meaning.
DaveA
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