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From: Sven Littkowski
Subject: Problem: Photons: Crash?
Date: 10 Dec 2007 10:54:50
Message: <475d614a@news.povray.org>
I am not sure if POVRAY crashes on my scene file or not, who can help?

It starts to parse the photons, but at position 45176 it suddenly stops 
doing anything. Maybe POVRAY still calculates, but I am not sure. At least, 
it reacts properly on abort request. Who would like to test my file (see 
attached ZIP) and tell me if it crashed or not?

Thanks.

Sven Littkowski


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Attachments:
Download 'SL Heli Chopper 02.zip' (394 KB)

From: Spock
Subject: Re: Problem: Photons: Crash?
Date: 10 Dec 2007 17:00:46
Message: <475db70e$1@news.povray.org>
I know nothing of these "photons" of which you speak, but the unmodified 
contents of your zip file can be used to generate an image.  It takes a 
while, but it doesn't crash (3.6.1c.icl8.win32).  Stats in p.b.s-f, 
image in p.b.i.

Cute little critters...  Nice modelling.



Scene Statistics
   Finite objects:          816
   Infinite objects:          1
   Light sources:            17
   Total:                   834
Possible Rendering Error: Maximum trace level reached! If your scene 
contains black spots read more about the max_trace_level setting in the 
documentation!

Render Statistics
Image Resolution 800 x 600

Pixels:           481275   Samples:          729803   Smpls/Pxl: 1.52
Rays:            2721264   Saved:            426278   Max Level: 5/5

Ray->Shape Intersection          Tests       Succeeded  Percentage

Blob                        4792646042      2628670844     54.85
Blob Component             16408325546     13121840254     79.97
Blob Bound                 43641810229     24000003896     54.99
Box                        12996418225      6138963510     47.24
Cone/Cylinder               4853161191       724169730     14.92
CSG Intersection            4732723693      1192002778     25.19
CSG Merge                   1283145435      1282934163     99.98
CSG Union                   1375211429       629703113     45.79
Plane                        160514696        10952539      6.82
Sphere                      2316324133       667863998     28.83
Torus                        644305691        58523889      9.08
Torus Bound                  644305691        63745043      9.89
Bounding Box                8452476968      4887904824     57.83
Light Buffer               18947350698     10228075570     53.98
Vista Buffer                  66435980        52907199     79.64

Roots tested:            4752339395   eliminated:            162321768
Calls to Noise:                   0   Calls to DNoise:              10

Shadow Ray Tests:         184980927   Succeeded:             134069771
Reflected Rays:             1691851
Refracted Rays:              219534
Transmitted Rays:              1413

Radiosity samples calculated:             2763 (0.17 %)
Radiosity samples reused:              1615531

Smallest Alloc:                  18 bytes
Largest  Alloc:               38416 bytes
Peak memory used:           9053937 bytes
Total Scene Processing Times
   Parse Time:    0 hours  0 minutes  1 seconds (1 seconds)
   Photon Time:   0 hours  0 minutes  0 seconds (0 seconds)
   Render Time:   5 hours 57 minutes  9 seconds (21429 seconds)
   Total Time:    5 hours 57 minutes 10 seconds (21430 seconds)
CPU time used: kernel 8.44 seconds, user 21416.80 seconds, total 
21425.23 seconds
Render averaged 22.40 PPS over 480000 pixels

POV-Ray finished








Sven Littkowski wrote:
> I am not sure if POVRAY crashes on my scene file or not, who can help?
> 
> It starts to parse the photons, but at position 45176 it suddenly stops 
> doing anything. Maybe POVRAY still calculates, but I am not sure. At least, 
> it reacts properly on abort request. Who would like to test my file (see 
> attached ZIP) and tell me if it crashed or not?
> 
> Thanks.
> 
> Sven Littkowski 
> 
>


Post a reply to this message

From: Alain
Subject: Re: Problem: Photons: Crash?
Date: 10 Dec 2007 20:55:20
Message: <475dee08@news.povray.org>
Sven Littkowski nous apporta ses lumieres en ce 2007/12/10 10:54:
> I am not sure if POVRAY crashes on my scene file or not, who can help?
> 
> It starts to parse the photons, but at position 45176 it suddenly stops 
> doing anything. Maybe POVRAY still calculates, but I am not sure. At least, 
> it reacts properly on abort request. Who would like to test my file (see 
> attached ZIP) and tell me if it crashed or not?
> 
> Thanks.
> 
> Sven Littkowski 
> 
> 
No crash. Maybe there are large areas that are covered by the photons shooting 
that can't receive any. Here it pause at 45182 and 45193 with autostop 0.
It still use 80 to 97% CPU.
You may have some object that have extremely large and almost empty bounding box.
Try removing all objects exept the ground plane, then add the various objects 
one by one until you find the problematic one.

Effeciency tip:
You have some maps like:
   pigment_map
   {
    [ 0.00 Gray95 ]
    [ 0.20 Gray95 ]
    [ 0.20 Gray95 ]
    [ 0.75 Gray30 ]
    [ 0.75 Gray30 ]
    [ 1.00 Gray30 ]
   }
that can be cut down to:
   pigment_map
   {
    [ 0.20 Gray95 ]
    [ 0.75 Gray30 ]
   }
for exactly the same result. In the present case, a constant shade of Gray95 
from zero to 0.2, a ramp from 0.2 to 0.75, and a constant shade of Gray30 for 
the rest. The short version is easier to write, debug and maintain.

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you have ever said "I don't need 
no steenking modellers!!!"
Stephan Ahonen


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From: Sven Littkowski
Subject: Re: Problem: Photons: Crash?
Date: 11 Dec 2007 16:30:10
Message: <475f0162@news.povray.org>
Thanks for the participation. Hmm, was anyone doing the file with a
resolution of 3200 x 2400 pixels? I would need the saved photon file (.ptn),
that would be a great help for me. If I could get that file, my computer
could probably render the scene in a good time. Thanks to everyone, who can
make this possible!

Spock, can you post here the picture you got? I would love to see it.

Sven Littkowski


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From: Spock
Subject: Re: Problem: Photons: Crash?
Date: 11 Dec 2007 17:00:52
Message: <475f0894$1@news.povray.org>
I could, but I think it violates the charter for this group.  Check out 
povray.binaries.images instead.

Sven Littkowski wrote:
> Thanks for the participation. Hmm, was anyone doing the file with a
> resolution of 3200 x 2400 pixels? I would need the saved photon file (.ptn),
> that would be a great help for me. If I could get that file, my computer
> could probably render the scene in a good time. Thanks to everyone, who can
> make this possible!
> 
> Spock, can you post here the picture you got? I would love to see it.
> 
> Sven Littkowski 
> 
>


Post a reply to this message

From: Sven Littkowski
Subject: Re: Problem: Photons: Crash?
Date: 11 Dec 2007 17:18:18
Message: <475f0caa$1@news.povray.org>
By the way, the entire modelling was done out of my head, no visual editor
was used!

Sven Littkowski


"Sven Littkowski" <jam### [at] yahoocom> wrote in message 
news:475d614a@news.povray.org...
>I am not sure if POVRAY crashes on my scene file or not, who can help?
>
> It starts to parse the photons, but at position 45176 it suddenly stops 
> doing anything. Maybe POVRAY still calculates, but I am not sure. At 
> least, it reacts properly on abort request. Who would like to test my file 
> (see attached ZIP) and tell me if it crashed or not?
>
> Thanks.
>
> Sven Littkowski
>
>


Post a reply to this message

From: Sven Littkowski
Subject: Re: Problem: Photons: Crash?
Date: 11 Dec 2007 17:21:07
Message: <475f0d53$1@news.povray.org>
Thanks, I just saw it! Can you create for me the photon file (.ptn) for a 
resolution of 3200 x 2400 (AA0.3)? Just look to the begin of the scene file, 
there is an option to save the file. Please, if cou can do this for me, send 
it to me. Great thanks! On my system, it takes tooooo long (I gave up after 
half a day).

Sven Littkowski


"Spock" <Spo### [at] nospamcom> wrote in message 
news:475f0894$1@news.povray.org...
>I could, but I think it violates the charter for this group.  Check out 
>povray.binaries.images instead.
>
> Sven Littkowski wrote:
>> Thanks for the participation. Hmm, was anyone doing the file with a
>> resolution of 3200 x 2400 pixels? I would need the saved photon file 
>> (.ptn),
>> that would be a great help for me. If I could get that file, my computer
>> could probably render the scene in a good time. Thanks to everyone, who 
>> can
>> make this possible!
>>
>> Spock, can you post here the picture you got? I would love to see it.
>>
>> Sven Littkowski


Post a reply to this message

From: Spock
Subject: Re: Problem: Photons: Crash?
Date: 11 Dec 2007 17:41:39
Message: <475f1223$1@news.povray.org>
Sorry, I don't have that kind of horsepower.  I think you need the 
services of a render farm.

Sven Littkowski wrote:
> Thanks, I just saw it! Can you create for me the photon file (.ptn) for a 
> resolution of 3200 x 2400 (AA0.3)? Just look to the begin of the scene file, 
> there is an option to save the file. Please, if cou can do this for me, send 
> it to me. Great thanks! On my system, it takes tooooo long (I gave up after 
> half a day).
> 
> Sven Littkowski
> 
> 
> "Spock" <Spo### [at] nospamcom> wrote in message 
> news:475f0894$1@news.povray.org...
>> I could, but I think it violates the charter for this group.  Check out 
>> povray.binaries.images instead.
>>
>> Sven Littkowski wrote:
>>> Thanks for the participation. Hmm, was anyone doing the file with a
>>> resolution of 3200 x 2400 pixels? I would need the saved photon file 
>>> (.ptn),
>>> that would be a great help for me. If I could get that file, my computer
>>> could probably render the scene in a good time. Thanks to everyone, who 
>>> can
>>> make this possible!
>>>
>>> Spock, can you post here the picture you got? I would love to see it.
>>>
>>> Sven Littkowski 
> 
>


Post a reply to this message

From: Alain
Subject: Re: Problem: Photons: Crash?
Date: 11 Dec 2007 21:53:26
Message: <475f4d26$1@news.povray.org>
Sven Littkowski nous apporta ses lumieres en ce 2007/12/11 17:20:
> Thanks, I just saw it! Can you create for me the photon file (.ptn) for a 
> resolution of 3200 x 2400 (AA0.3)? Just look to the begin of the scene file, 
> there is an option to save the file. Please, if cou can do this for me, send 
> it to me. Great thanks! On my system, it takes tooooo long (I gave up after 
> half a day).
> 
> Sven Littkowski
> 
> 
> "Spock" <Spo### [at] nospamcom> wrote in message 
> news:475f0894$1@news.povray.org...
>> I could, but I think it violates the charter for this group.  Check out 
>> povray.binaries.images instead.
>>
>> Sven Littkowski wrote:
>>> Thanks for the participation. Hmm, was anyone doing the file with a
>>> resolution of 3200 x 2400 pixels? I would need the saved photon file 
>>> (.ptn),
>>> that would be a great help for me. If I could get that file, my computer
>>> could probably render the scene in a good time. Thanks to everyone, who 
>>> can
>>> make this possible!
>>>
>>> Spock, can you post here the picture you got? I would love to see it.
>>>
>>> Sven Littkowski 
> 
> 
As the photons are independent from the resolution, you can render at, say 320 x 
240, save the photons to a file. Then, for the high resolution render, you just 
import the photons map from that file.

-- 
Alain
-------------------------------------------------
There's always going to be people that hurt you so what you have to do is keep 
on trusting and just be more careful about who you trust next time around.


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From: Sven Littkowski
Subject: Re: Problem: Photons: Crash?
Date: 12 Dec 2007 08:28:32
Message: <475fe200$1@news.povray.org>
Hm-hmmm, I see. Thanks for the advise. I even tried something similar 
(slightly different resolution). But still, after half a day I gave up. It 
is this condemned (critical) 45176 position, where everything appears to be 
come to an end.

Hopefully someone can supply me with that file...

Sven Littkowski


"Alain" <ele### [at] netscapenet> wrote in message 
news:475f4d26$1@news.povray.org...
> Sven Littkowski nous apporta ses lumieres en ce 2007/12/11 17:20:
>> Thanks, I just saw it! Can you create for me the photon file (.ptn) for a 
>> resolution of 3200 x 2400 (AA0.3)? Just look to the begin of the scene 
>> file, there is an option to save the file. Please, if cou can do this for 
>> me, send it to me. Great thanks! On my system, it takes tooooo long (I 
>> gave up after half a day).
>>
>> Sven Littkowski
>>
>>
>> "Spock" <Spo### [at] nospamcom> wrote in message 
>> news:475f0894$1@news.povray.org...
>>> I could, but I think it violates the charter for this group.  Check out 
>>> povray.binaries.images instead.
>>>
>>> Sven Littkowski wrote:
>>>> Thanks for the participation. Hmm, was anyone doing the file with a
>>>> resolution of 3200 x 2400 pixels? I would need the saved photon file 
>>>> (.ptn),
>>>> that would be a great help for me. If I could get that file, my 
>>>> computer
>>>> could probably render the scene in a good time. Thanks to everyone, who 
>>>> can
>>>> make this possible!
>>>>
>>>> Spock, can you post here the picture you got? I would love to see it.
>>>>
>>>> Sven Littkowski
>>
>>
> As the photons are independent from the resolution, you can render at, say 
> 320 x 240, save the photons to a file. Then, for the high resolution 
> render, you just import the photons map from that file.
>
> -- 
> Alain
> -------------------------------------------------
> There's always going to be people that hurt you so what you have to do is 
> keep on trusting and just be more careful about who you trust next time 
> around.


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