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I was on the povcomp website looking (okay, drooling) at the grand prize and
at the bottom of the description, it mentions that it can be used to render
scenes that would be "impossible with only 4 gig of memory (paraphrased)."
I admit to being very much a novice with Povray, but what scenes take more
than 4 gig of memory? Has anyone worked on such things, and are they in the
hall of fame? :)
Just curious,
Zesty
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> I admit to being very much a novice with Povray, but what scenes take more
> than 4 gig of memory?
#declare rnd = seed(543);
#declare n=0;
#while (n < 100000000)
sphere {<rand(rnd),rand(rnd),rand(rnd)>*10000,rand(rnd) pigment {rgb 1}}
#declare n = n + 1;
#end
Heh. =)
More practically, I have a scene which has a large number of copies of an
object, which has a large number of copies of smaller objects, each of which
is fairly complex. That adds up to a lot of little objects, and the more
memory I have the less I have to worry about conserving it. Since I "only"
have a gig of memory, I have to come up with clever ways of avoiding placing
objects where they won't be visible, in order to save memory.
Then, of course, there's radiosity data and photons, which can take up a lot
of memory. Plus things loaded during parse time like image or density file
data. It can all add up.
- Slime
[ http://www.slimeland.com/ ]
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Zesty <tac### [at] gmail com> wrote:
> I admit to being very much a novice with Povray, but what scenes take more
> than 4 gig of memory?
Currently probably none since no-one has had more memory than that
available (it's possible that someone has made scenes which use more
than 4GB in some older 64-bit unix systems, but unlikely, since these
systems are usually not all that fast, unless you are using a Cray or
something).
However, it's not that hard to imagine a scene using that much
memory. Imagine a big city with hundreds of thousands of detailed
models and hundreds of thousands of detailed uv-mapped image maps
on them.
--
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}// - Warp -
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> I admit to being very much a novice with Povray, but what scenes take more
> than 4 gig of memory? Has anyone worked on such things, and are they in the
> hall of fame? :)
I got only 1 Gig of RAM, but you reach that one pretty fast (Last time
it was a rather simple fractal). I'm sure if you throw in some large
meshes 4 Gig are not far away.
Would be interesting how much memory the clients of Pixar's and
Dreamwork's render farms got, but a quick google did not reveal anything...
Florian
--
camera{look_at-y*10location<8,-3,-8>*10}#local a=0;#while(a<999)sphere{
#local _=.01*a-4.99;#local p=a*.01-5;#local c=.01*a-4.995;<sin(p*pi)*5p
*10pow(p,5)*.01>sin(c*c*c*.1)+1pigment{rgb 3}}#local a=a+1;#end
/******** http://www.torfbold.com ******** http://www.imp.org ********/
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news:417df5a5$1@news.povray.org...
>
> Would be interesting how much memory the clients of Pixar's and
> Dreamwork's render farms got, but a quick google did not reveal
anything...
Here's an example, but it's from 4 years ago.
http://www.flarg.com/Graphics/ShrekRenderingStatistics.html
G.
--
**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters
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Zesty wrote:
> I was on the povcomp website looking (okay, drooling) at the grand prize and
> at the bottom of the description, it mentions that it can be used to render
> scenes that would be "impossible with only 4 gig of memory (paraphrased)."
>
> I admit to being very much a novice with Povray, but what scenes take more
> than 4 gig of memory? Has anyone worked on such things, and are they in the
> hall of fame? :)
>
> Just curious,
>
> Zesty
>
>
Say you want to use a mesh with fine enough resolution to support real
displacement of the surface.
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> I was on the povcomp website looking (okay, drooling) at the grand prize and
> at the bottom of the description, it mentions that it can be used to render
> scenes that would be "impossible with only 4 gig of memory (paraphrased)."
>
> I admit to being very much a novice with Povray, but what scenes take more
> than 4 gig of memory? Has anyone worked on such things, and are they in the
> hall of fame? :)
>
> Just curious,
>
> Zesty
>
>
Using more than 4GB RAM? I've not yet seen a scene needing that much.
But I know that using rad and photons and some meshs can make you swap
easily.
I, at one time, generated a photon save file of more than 700MB. Had to
abort the render: I have "only" 784MB and did not want to spend too much
time swapping for a TEST scene...
If you want to see a pic that needed more than 1GB to render, look at
this one: http://www.irtc.org/ftp/pub/stills/2001-06-30/warm_up.jpg.
The text says:
"parse 11 min 40 sec / trace 101 h 18 min (AA 0.1)/ 1110 MB peak memory"
And I'm pretty sure that with the 64bits procs available actually, it is
only a matter of time...
Regards,
--
Laurent ARTAUD
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Zesty wrote:
| I was on the povcomp website looking (okay, drooling) at the grand
prize and
| at the bottom of the description, it mentions that it can be used
to render
| scenes that would be "impossible with only 4 gig of memory
(paraphrased)."
|
| I admit to being very much a novice with Povray, but what scenes
take more
| than 4 gig of memory? Has anyone worked on such things, and are
they in the
| hall of fame? :)
|
| Just curious,
|
This image waasn't rendered with pov since at that recursion level
it used too much memory... OTOH having more than 4G could allow the
use of a higher recursion, or the addition of photons, radiosity, etc.
http://jberger.free.fr/tmp/blok.jpg
Jerome
PS: the original (POVRay) image was made by JWV in april 2004:
http://news.povray.org/povray.binaries.images/thread/%3C408027c5%40news.povray.org%3E/?ttop=201532&toff=650
- --
******************************
* Jerome M. Berger *
* mailto:jbe### [at] ifrancecom *
* http://jeberger.free.fr/ *
******************************
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
iD8DBQFBfq5iqIYJdJhyixIRAiozAJ9JtWZrKmJ9GtrxehXs6THLPJJ2iwCeMKOF
HpHGhcW65Iix97el+FicKFc=
=Fn+D
-----END PGP SIGNATURE-----
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: http://jberger.free.fr/tmp/blok.jpg
That's: http://jeberger.free.fr/tmp/blok.jpg
=Bob=
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"Florian Brucker" <tor### [at] torfboldcom> wrote in message
news:417df5a5$1@news.povray.org...
>> I admit to being very much a novice with Povray, but what scenes take
>> more
>> than 4 gig of memory? Has anyone worked on such things, and are they in
>> the
>> hall of fame? :)
> I got only 1 Gig of RAM, but you reach that one pretty fast (Last time it
> was a rather simple fractal). I'm sure if you throw in some large meshes 4
> Gig are not far away.
>
> Would be interesting how much memory the clients of Pixar's and
> Dreamwork's render farms got, but a quick google did not reveal
> anything...
>
Found a site that did the CG stuff for Harry Potter films, they stated that
the texture files for the old Ford Anglia used in the film, took up 14 gig.
they didn't say how much memory the mesh files took up though.
Alex
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