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Subject: Re: [AE] Mac kernel panics (continued)
From: Eric James Wood <list@helium14.com>
In-Reply-To: <list-4647404@media-motion.tv>
Date: Tue, 6 Mar 2012 10:16:32 -0800
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Message-Id: <C75D17E8-D3C9-424A-8DA6-90EE575EC6F4@helium14.com>
References: <list-4647404@media-motion.tv>
To: "After Effects Mail List" <AE-List@media-motion.tv>

He didn't say it dropped to 30=B0, he said it dropped about 30=B0. Big =
difference. These numbers are all in-line for what the chips are =
designed to do. Sure, colder is better, but they do get hot.

My 2011 MBP during rendering will hit the fans up to 6k and sit at 98=B0c.=
 Yes, celsius. So they are just under the boiling point of water. But =
the logic board and thermal paste are not water, and can take much =
higher temps before they melt.

On 2012.Mar.06, at 10.09, Teddy Gage wrote:

> Holy crap, 150 degrees? I hope that's fahrenheit, otherwise you could =
cook a roast chicken in there. If that's in celsius I think your =
motherboard would melt. not sure what thermal max is on the chips in =
your mac pro but I'd imagine it should be kept well under 65c at full =
load for best performance and cpu life. Dust maintenance and airflow are =
really important, especially for a mac pro. I've worked at a lot of =
studios where they've never been opened up and cleaned for years...
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> On Tue, Mar 6, 2012 at 12:35 PM, Jeff H <jeff.aelist@gmail.com> wrote:
> For monitoring the inside temps, you could install a little app called =
SMC Fan Control, or iStat Menus.  Both apps will also let you control =
the fan speed and monitor just about anything that has a temperature =
sensor inside the mac.
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> I noticed in my office that when rendering, especially 3D, the inside =
temps on the CPU's (Mac Pro 12 core) would get well into the 150's.  =
After turning up the fan speed just a tad, it brought it down about 30 =
degrees.  I'm not saying that the heat is the only reason for the KP's =
but I'd definitely want to know how hot the machine was getting, =
especially if the AC wasn't running.  Maybe you could kick the fans up =
at night to offset the warmer room?
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> Jeff
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> On Mar 5, 2012, at 4:47 PM, Chris Zwar wrote:
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> > Just picking up an older thread...
> >
> > Basically I'm working in a studio that has a load of identically =
specc'd Macs, presumably all purchased at the same time.  They all have =
nVidia Quadro FX cards in them and they all kernel panic regularly.
> >
> > Software / OS and Cuda drivers are up to date.  The problem seems to =
lie with the nVidia cards.  The only noticable thing is that they very =
rarely panic during the day, but mostly overnight when rendering on the =
farm.  This suggests it may be a heat issue, as the air conditioning =
goes off at 6pm and it's pretty warm in the office by 9am.  However the =
problem also seems to lie with GPU enabled software, including optical =
flares and sapphire (and even the screen saver) so it might not be heat =
after all.  As noted in my original post (way down below) simply =
applying the optical flares effect to a solid can prompt a kernel panic.
> >
> > The fact the problem affects so many Macs (about 10) suggests it =
isn't an individual case of faulty ram or even a dodgy graphics card.  =
Software updates haven't helped.
> >
> > Any other suggestions?
> >
> >
> > -Chris
> >
> >
> > Thanks for both your help.
> >
> > I've downloaded the latest CUDA driver (which I didn't have) and am =
looking forward to seeing if it makes a difference.
> >
> > I do always uncheck the GPU option for optical flares (and any other =
plugin that gives the option) however there's always the crossed fingers =
and silent prayer the first time that OF is applied to a layer and then =
seeing how quickly you can tick the box! It's annoying that it's such a =
gorgeous and popular effect, it's not uncommon for it to have been =
applied hundreds of times in a single large project, and if the project =
is causing kernel panics then then you have to go through and find the =
solitary instance that still has the GPU option enabled... (the PT =
effect search script is pure gold...)
> >
> > Judging from the number of machines effected it does seem like an =
issue with nVidia drivers somewhere...
> >
> >
> > -Chris
> >
> > -----Original Message-----
> > From: Jim Curtis [mailto:jpcurtis@me.com]
> > Sent: Thursday, December 1, 2011 03:11 PM
> > To: 'After Effects Mail List'
> > Subject: Re: [AE] Mac Kernel panics
> >
> > I swear by Disk Warrior, which I run immediately after every Kernel =
Panic. It seems to vanquish them for a long while. Then for good =
measure, I run Applejack AUTO before commencing work again.
> >
> > I've only had about four KPs on my MacPro3,1 since buying it in =
2008. They seem to have been more related to a RAID controller than GPU, =
but I only say that because the KPs mostly have occurred within a few =
days of either installing new PCI cards or drivers.
> >
> > BTW, Optical Flares (latest rev) will crash AE 100% of the time with =
my newish Quadro 4000 when the "use GPU" box is checked. It works fine =
as long as that box is unchecked. Perhaps you could try unchecking the =
box to see if that helps things.
> >
> >
> > On Nov 30, 2011, at 6:25 PM, Chris Zwar wrote:
> >
> >> I'm working on a Mac Pro with an nVidia 4500 Quadro FX card. I =
probably get about 1 kernel panic a day, which seems to be caused by =
open GL or GPU accelleration. The crash reports all point to After =
Effects as the cause of the panic, but it's only GPU plugins that cause =
a panic. There's a bunch of macs here with similar specs and they all =
seem to suffer from the same problem- if it was just mine I'd suspect =
faulty hardware. It's not uncommon to arrive in the morning and find =
half the machines on the render farm have kernel panicked.
> >>
> >> I originally thought it was just the 'optical flares' plugin (we =
have the latest version), but it seems that any plugin that utilises the =
graphics card has a chance of bringing the machine down, possibly =
including sapphire.
> >>
> >> I have open GL turned off in AE, have all the latest software =
updates, and I avoid open GL / GPU acceleration where I can. But are =
there any other suggestions to fix this?
> >>
> >> -Chris
> >>
> >>
> >>
> >> +---End of message---+
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> >
> >
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> Animator & Editor
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> Brooklyn
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<ericwood>
    Helium14 | www.helium14.com
    Design | Motion + Graphic
    www.helium14.com

'the next best thing to knowing something, is knowing where to find it'