POV-Ray : Newsgroups : povray.binaries.images : Mystery white-pixel artifacts Server Time
30 Jul 2024 08:21:22 EDT (-0400)
  Mystery white-pixel artifacts (Message 1 to 6 of 6)  
From: Jaime Vives Piqueres
Subject: Mystery white-pixel artifacts
Date: 29 Sep 2012 06:18:30
Message: <5066caf6@news.povray.org>
Hi All:

   Has anyone suffered these kind of artifacts before? ...it happened to
me just for third time with the RC6, but I can't isolate it. All that I
know is that always/only happens on long nightly renders using both
focal blur and Radiosity_OutdoorHQ, and that you can't get it the same
twice (see both pencils images, rendered one just after the another).
Oh, and it seems to have something to do with reflections (at least I
can't get it reproduced with the same scenes if I take out the reflection).


--
Jaime


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From: Jaime Vives Piqueres
Subject: Re: Mystery white-pixel artifacts
Date: 29 Sep 2012 10:38:57
Message: <50670801$1@news.povray.org>
On 29/09/12 12:18, Jaime Vives Piqueres wrote:
> Hi All:
>
> Has anyone suffered these kind of artifacts before?


   Oops... no wonder it looked familiar: it happened *to me* before, and
if it's the same problem (which I suspect), I better start ordering a
new system ASAP.

http://news.povray.org/povray.unix/thread/%3C3B38628F.B5E5674%40ignorancia.org%3E/?mtop=72243&moff=10


--
Jaime


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From: waggy
Subject: Re: Mystery white-pixel artifacts
Date: 29 Sep 2012 13:05:00
Message: <web.50672933a7555b9c9726a3c10@news.povray.org>
Jaime Vives Piqueres wrote:
> On 29/09/12 12:18, Jaime Vives Piqueres wrote:
> >
> > Has anyone suffered these kind of artifacts before?
>
>    Oops... no wonder it looked familiar: it happened *to me* before, and
> if it's the same problem (which I suspect), I better start ordering a
> new system ASAP.

By any chance, have these computers been located at high altitude and/or
latitude?


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From: Jaime Vives Piqueres
Subject: Re: Mystery white-pixel artifacts
Date: 29 Sep 2012 14:36:35
Message: <50673fb3$1@news.povray.org>
On 29/09/12 19:00, waggy wrote:
> By any chance, have these computers been located at high altitude
> and/or latitude?
>
>

   No, it's just that both have had episodes of overheating... the first
one was due to an insufficient heat-sink, and this one worked for some
minutes with a broken (stopped) heat-sink fan until I noticed... it
happened some months ago, I replaced the fan and everything seems to
work fine, but I guess something is failing under extreme conditions
(that is, POV-Ray at work).

--
Jaime


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From: waggy
Subject: Re: Mystery white-pixel artifacts
Date: 30 Sep 2012 01:45:07
Message: <web.5067db88a7555b9c9726a3c10@news.povray.org>
Jaime Vives Piqueres wrote:
> On 29/09/12 19:00, waggy wrote:
> > By any chance, have these computers been located at high altitude
> > and/or latitude?
>
>    No, it's just that both have had episodes of overheating... the first
> one was due to an insufficient heat-sink, and this one worked for some
> minutes with a broken (stopped) heat-sink fan until I noticed... it
> happened some months ago, I replaced the fan and everything seems to
> work fine, but I guess something is failing under extreme conditions
> (that is, POV-Ray at work).

Thanks. That's really good to know.  With no A/C in south Texas, I worry about
frying my electronics.

But, I just had to verify the correlation with the 11-year solar activity cycle
was just coincidence.


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From: Jaime Vives Piqueres
Subject: Re: Mystery white-pixel artifacts
Date: 30 Sep 2012 03:30:40
Message: <5067f520$1@news.povray.org>
> ... With no A/C in south Texas, ...

   OMG! ...I hope you have proper heat-sinks.


> But, I just had to verify the correlation with the 11-year solar
> activity cycle was just coincidence.

   Interesting, indeed... but yes, I'm guessing it just coincides with my
personal "frying CPU" cycle. :)

--
Jaime


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