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I have optimized PovRay for 3D!Now and it's 50% faster. You need an Athlon
to run it, because the optimized PovRay uses 3D!Now and 3D!NowEx.
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Daniel Jungmann wrote:
>
> I have optimized PovRay for 3D!Now and it's 50% faster. You need an Athlon
> to run it, because the optimized PovRay uses 3D!Now and 3D!NowEx.
I suppose it uses single precision floats? If yes it would be interesting
to see some critical scenes rendered with it.
Some more detailed benchmarks would be interesting too.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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On Sat, 27 Jan 2001 11:06:06 +0100 Daniel Jungmann wrote:
>I have optimized PovRay for 3D!Now and it's 50% faster. You need an Athlon
>to run it, because the optimized PovRay uses 3D!Now and 3D!NowEx.
Daniel, you neglected to mention where people can get this
3D!Now-optimised version (keeping POVLEGAL in mind as far as you
supporting it, and all). I'm sure there are more than a few who would
like to test it for speed and stability.
--
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
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I just optimized the colour calculation and didn't changed double to single
precision. I also used inline and some general optimizations e. g. replace
div. with mul.
The pictures that PovRay optimized for 3D!Now produce are the same as the
pictures PovRay produce.
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> Daniel, you neglected to mention where people can get this
> 3D!Now-optimised version (keeping POVLEGAL in mind as far as you
> supporting it, and all). I'm sure there are more than a few who would
> like to test it for speed and stability.
I don't know everything about POVLEGAL, so you must wait a litte time. The
optimiziation is done, but not more.
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I have a 700 Mhz duron, and AFAIK, it does not have the 3D!NowEx functions.
Will I get a 50 % improvement in speed as well ?
Daniel Jungmann a écrit :
> I have optimized PovRay for 3D!Now and it's 50% faster. You need an Athlon
> to run it, because the optimized PovRay uses 3D!Now and 3D!NowEx.
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On Sat, 27 Jan 2001 15:01:37 +0100 Daniel Jungmann wrote:
>I don't know everything about POVLEGAL, so you must wait a litte time. The
>optimiziation is done, but not more.
Okay. I don't have an Athlon (yet) so I can be patient, thanks <s>.
--
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
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> I have a 700 Mhz duron, and AFAIK, it does not have the 3D!NowEx
functions.
> Will I get a 50 % improvement in speed as well ?
>
I just use one 3D!NowEx instruction, so I will make an version of PovRay
that just need 3D!Now.
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> I have a 700 Mhz duron, and AFAIK, it does not have the 3D!NowEx
functions.
> Will I get a 50 % improvement in speed as well ?
You will get an illegal instruction exception, but I will make a version
that run's just with 3D!Now. Second, the 50% improvement was the minimum, I
had up to 180%.
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I really would like EXACTLY what you modified. May be these improvements can
be put back also in std. POVRay.
Alessandro Coppo
a.c### [at] iolit
P.S.: next week I will get a 1GHz Athlon + 512MB of RAM + 30GB of HD. I
think it will be an adequate POVray machine, won't it? ;-)
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I don't have a website, but I can e-mail PovRay optimized for 3D!Now ( you
need just 3D!Now ) or the sourcefiles I have changed everyone who is
interested. I think I will make a version of PovRay optimized for SSE
(Pentium III), but first check the feadback for PovRay & 3D!Now.
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Daniel Jungmann wrote:
>
> I don't have a website, but I can e-mail PovRay optimized for 3D!Now ( you
> need just 3D!Now ) or the sourcefiles I have changed everyone who is
> interested. I think I will make a version of PovRay optimized for SSE
> (Pentium III), but first check the feadback for PovRay & 3D!Now.
I would be interested in both source and windows executable if you have.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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I change some things in the optimization, so you just need 3D!Now.
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How do i find out if i have 3D!now?
Daniel Jungmann wrote:
> I have optimized PovRay for 3D!Now and it's 50% faster. You need an Athlon
> to run it, because the optimized PovRay uses 3D!Now and 3D!NowEx.
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Psychomech wrote:
>
> How do i find out if i have 3D!now?
>
Look for a green and black sticker on your case that says "AMD Athlon"
:)
--
Francois Labreque | Make you a deal, I'll show you mine if you show
flabreque | me yours.
@ |
videotron.ca | - Pandora.
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On Tue, 30 Jan 2001 07:31:46 -0500, Francois Labreque wrote:
>
>
>Psychomech wrote:
>>
>> How do i find out if i have 3D!now?
>>
>
>Look for a green and black sticker on your case that says "AMD Athlon"
The K6-2 and K6-3 processors also have 3DNow!.
--
Ron Parker http://www2.fwi.com/~parkerr/traces.html
My opinions. Mine. Not anyone else's.
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Daniel Jungmann wrote:
>
> I don't have a website, but I can e-mail PovRay optimized for 3D!Now ( you
> need just 3D!Now ) or the sourcefiles I have changed everyone who is
> interested. I think I will make a version of PovRay optimized for SSE
> (Pentium III), but first check the feadback for PovRay & 3D!Now.
I have tested it on my K6-2 500 but it crashed as soon as i used any
transformations (rotate/translate/scale)
An simple scene worked though and i made some short quite synthetic
benchmark containing a lot of reflection and refraction:
3D!Now compile: 9min, 2sec
povray 3.1g: 7min, 59sec
megapov 0.6a: 10min, 29sec
povCyg 3.1g: 8min, 43sec
Not a very convincing result and probably not representative fore real
scenes. I would have liked to test it on some more complex scene, but
making one without any transformations is difficult.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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> I have tested it on my K6-2 500 but it crashed as soon as i used any
> transformations (rotate/translate/scale)
>
> An simple scene worked though and i made some short quite synthetic
> benchmark containing a lot of reflection and refraction:
>
> 3D!Now compile: 9min, 2sec
> povray 3.1g: 7min, 59sec
> megapov 0.6a: 10min, 29sec
> povCyg 3.1g: 8min, 43sec
>
> Not a very convincing result and probably not representative fore real
> scenes. I would have liked to test it on some more complex scene, but
> making one without any transformations is difficult.
>
> Christoph
Can you please send me the scene file? I used the scene which was added and
had no problem, but I have an Athlon. Perhaps that's the reason.
Post a reply to this message
Attachments:
Download 'Stadt.zip' (2 KB)
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Daniel Jungmann wrote:
>
> Can you please send me the scene file? I used the scene which was added and
> had no problem, but I have an Athlon. Perhaps that's the reason.
>
Please no attachments in this group.
The benchmark scene is in p.t.s-f. What crashes is any scene using
transformations:
sphere { <0,0,1>, 1 }
works, but
sphere { <0,0,0>, 1 translate <0,0,1> }
crashes.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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I had other results. I rendered the added (see last post) scene with
800x600, AA=0.3, Radiosity=On and Antialias=On.
3D!Now compile: 3min, 30sec
povray 3.1g: 5min, 04sec
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> The benchmark scene is in p.t.s-f. What crashes is any scene using
> transformations:
>
> sphere { <0,0,1>, 1 }
>
> works, but
>
> sphere { <0,0,0>, 1 translate <0,0,1> }
>
> crashes.
>
> Christoph
I tried it, but I had no problems. I can use translate with no problems.
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On Tue, 30 Jan 2001 18:26:37 +0100, Daniel Jungmann wrote:
>I tried it, but I had no problems. I can use translate with no problems.
The crash I get when I try to execute your binary on the standard skyvase.pov
is an invalid opcode. This might be an Athlon vs. K6-2 thing.
--
Ron Parker http://www2.fwi.com/~parkerr/traces.html
My opinions. Mine. Not anyone else's.
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Ron Parker wrote:
>
> On Tue, 30 Jan 2001 18:26:37 +0100, Daniel Jungmann wrote:
> >I tried it, but I had no problems. I can use translate with no problems.
>
> The crash I get when I try to execute your binary on the standard skyvase.pov
> is an invalid opcode. This might be an Athlon vs. K6-2 thing.
>
Could be, i also tried skyvase.pov and it crashes for the same reason. Of
course I don't know if transformations are the only reason in this case.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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Daniel Jungmann wrote:
>
> I had other results. I rendered the added (see last post) scene with
> 800x600, AA=0.3, Radiosity=On and Antialias=On.
>
> 3D!Now compile: 3min, 30sec
> povray 3.1g: 5min, 04sec
I couldn't run your scene either, so i can't confirm that. Have you tried
the code i posted to p.t.s-f.? (320x240 -aa -d)
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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> The crash I get when I try to execute your binary on the standard
skyvase.pov
> is an invalid opcode. This might be an Athlon vs. K6-2 thing.
The invalid opcode is because the programm uses an instruction that the K6
doesn't know but the Athlon knows. I tried to don't use Athlon instructions,
but I had to fail to notice one.
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> 3D!Now compile: 9min, 02sec
> povray 3.1g: 7min, 59sec
3D!Now compile: 3min, 24sec
povray 3.1g: 2min, 42sec
I think I know why the 3D!Now version is one minut slower. I changed some
things by the color converting ( float to unsigned char ), but this was now
not ready so it would be slower then the "normal" PovRay. I wanted to speed
up the display speed, but this was not done jet. I will remove this and test
again and post the results.
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*g* I found the "mistake". I forgot to set the compiler thr optimization to
max speed ( I had disabled the optimization ). Now new speed check
3D!Now compile: 2min, 14sec
povray 3.1g: 2min, 42sec
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No anthalon but K-6 II and it does say 3DNOW! on it funny i never
noticed it before.... one reason i guess is my keyboard covers most of it
up...
Francois Labreque wrote:
> Psychomech wrote:
> >
> > How do i find out if i have 3D!now?
> >
>
> Look for a green and black sticker on your case that says "AMD Athlon"
>
> :)
>
> --
> Francois Labreque | Make you a deal, I'll show you mine if you show
> flabreque | me yours.
> @ |
> videotron.ca | - Pandora.
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