Re: Matlab application slowing down on Windows
- From: "fermineutron" <free4trample@xxxxxxxxx>
- Date: 13 Apr 2006 13:40:37 -0700
Regarding virtual memory: if you can change the size of your matlab
model, the amount of data it keeps in RAM try to change that and see if
you notice a significand change in speed. for example, when i do
montecarlo neutron transport simulation and i define too large of the
universe, matlab pages my variables and i get about 20X speed drop.
Disabling page file completely somewhat interferes with paging although
windows still pages some data but with disabled pagefile you do not
have control as to where windows will page. To really stop windows from
paging, set a manual size page file with as little space as it lets
you, 1- 2 MB. I've noticed that windows pages my matlab and its
variables, when matlab takes up allot of space, even though there's
plenty of free ram in fact enough to stome ML and its vars in ram, so
in that regard windows is evil. With disabled page file or too small
page file you may get out of memory error in matlab, but if it does not
err it will not page either. Note: by disableing page file you will
significantly decrease amount of free ram since other data cant be
paged to free ram.
I've looked but did not find a way to stop windows from paging matlab,
but to page everything else, if you find a way let me know plz.
.
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