POV-Ray : Newsgroups : povray.beta-test : memory problem with radiosity : Re: memory problem with radiosity Server Time
6 Jul 2024 06:56:59 EDT (-0400)
  Re: memory problem with radiosity  
From: Alain
Date: 15 Feb 2010 10:08:24
Message: <4b796368$1@news.povray.org>

> On 2/14/2010 1:58 PM, Ken Willmott wrote:
>> Darren New<dne### [at] sanrrcom> wrote:
>>> Thorsten Froehlich wrote:
>>>> Given that turning virtual memory off is impossible in Windows that
>>>> seems like an odd suggestion...
>>>
>>> Turning virtual memory off in Windows is trivial. I don't think you
>>> can turn
>>> off virtual addressing, but that shouldn't have an impact on this
>>> problem.
>>>
>>> Control panel->System->Advanced->Performance->Advanced->No page file
>>>
>>> Admittedly, it's behind two "advanced" tabs, but the help tells you
>>> how to
>>> get there too if you put "virtual memory" into the search bar of the
>>> control
>>> panel.
>>>
>>> --
>>> Darren New, San Diego CA, USA (PST)
>>> Forget "focus follows mouse." When do
>>> I get "focus follows gaze"?
>>
>> Interesting, I had no idea this was possible. Actually though, I
>> believe it is
>> probably better to leave it alone. It's probably there to allow better
>> real-time
>> performance for time critical apps.
>>
> As a rule, usually is. Windows will try to page, even if it *has*
> sufficient system memory available, due to how it loads/unloads things
> it doesn't need immediately. And, you run into major issues "if" you
> don't have it and hit the memory limit.
>
> About the only thing its good for, if you have the system memory, is to
> wipe it with a reboot (after turning it off), run a *detailed*
> defragger, which consolidates files properly (most won't), then put it
> back, and restart. This causes the original to be removed, and a new one
> to be created, contiguously, at the end of the high end of the
> partition. I doubt 7 is any better than any other version has ever been
> at this, so **eventually** the page file gets so screwed up that
> everything runs like crap. Killing the file, consolidating everything,
> then restoring it is the most effective solution, but if you have enough
> free space, there are 1-2 things that *specifically* defrag the page
> file, during startup, and before its in use.
>
> Otherwise, you could turn it off in Windows, but, as I said, Windows
> doesn't like you doing it **at all**.
>

Never let windows complete control over the page file, and don't leave 
it on the same partition as windows.
One of the best way to manage it is to create a dedicated partition with 
nothing else on it, then to hide that partition.

If you have more than one hard drives, create a drive leter less 
partition as the first partition on each drives and make those contain 
your page file. It should be the first thing done on any new system.



Alain


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