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ram settings for 8 core
just upgraded to 8.0.1. I’m on an 8core with 16gb ram. I’ve had big problems with multiprocessing.
What are the optimum Ram settings please?
It seems to be voodoo magic.
Been rendering a project that runs smoothly on an almost identical quad-core. No problems there. In activity monitor, that computer seems to be all blue bars all the time. But not mine
Mine goes full tilt for about 30 seconds worth of render, and then slows down.
There doesn’t seem to be much in the way of explanation.And if I stop the render, I get the beach ball for about 40 seconds. And if I quit after effects, I get another 40 secs of beach ball. Is this the new AE in action?
When AE is rendering, it’s difficult to even get it to
So much for buying the fastest machine. It’s 5 days out of the box. I’ve done a full check with apple. ram. p-ram. the lot.
Hold on, gotta go. it’s just crashed again….. It even takes 30 secs to force quit…….
hmmm. anyone else having these issues, or is it just me?
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11 Replies
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ok. I just tried a ram preview with multiporcessing on and got this….
“unable to render multiple frames simultaneously”.
I thought that was the whole idea……
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If interframe-compressed codecs are involved, you may have trouble.
What codec are you rendering to?
What is the codec of the source footage? -
Well my 8 core (9 gigs of RAM) does smoke with renders, with the activity monitor having everything at the maximum, but it crashes sometimes too. Also having the beachball sometimes when closing down. Strange thing is also that only After Effects uses my 8 core to the maximum. Apple applications like FCP or compressor are still very slow.
Kool En De Anderen
MAC Pro/Kona LHe/Apple FCS 2/Adobe PPCS3/Huge fibrechannel
http://www.koolendeanderen.nl -
in addition to possible interframe compression problems, enabling opengl (always on) render for previews will disable multiprocessing rendering for previews… best to set opengl previews to interactive only, or just use adaptive resolution and disable opengl all together.
did you run the hardware test from the osx install disk? choose the more extensive test to test your ram… it si possible that you have a bad module, or the ram wasn’t installed correctly or in matching pairs.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
ran the apple hardware test extended before phoning apple.
no bad ram.it’s not that the machine is slow. it’s just thatit’s really flakey. flies through some things crashes on others. flakiest mac I’ve worked on. since a quadra 840av.
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and I’m running blackmagic and dv footage. no intraframe business.
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dv would use interframe compression (or temporal compression), similar to mpeg and many others. you might try converting the same dv footage used in that comp to lossless or uncompressed or even an image sequence to avoid interframe compression. then see how the comp renders.
you also might try rendering to an image sequence… i remember a comment about nucleo concerning multiprocessing to media files, where one processor also had the responsibility of encoding, but image sequences allowed each processor to write its own frame…
if the image sequence render helps, then possibly increasing the ram cache size to around 2-2.25gb (enough to only allow 6 additional processors for multiprocessing… the multiprocessing prefernce will tell you how many will be used) may help. this might free up one processor for encoding.
have you psted on the adobe ae forum, you might actually get somebody from adobe who knows what’s happening…. i’m really just theorizing. i wish i had enough ram to test it. 🙂
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
thanks for the help, but I’m pretty certain there’s no interframe compression in the DV format.
I’ll try it out though…
Looks like I’ll have to try a few things out…..Can’t put my finger on it yet.Getting a ‘compressord’ process in th activity window, from qmaster, that randomly appears and crashes silently in the background when AE starts up. I think there’s more to it than meets the eye….
Sometimes you just get a lemon machine, don’t you?
M
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you are correct, dv uses intraframe, hdv uses interframe… sorry about that, my mistake. but writing to an image sequence will allow each processor to write its own frame, which would eliminate the possible bottleneck of having to write to a single file with ordered frames.
there could also be a possible bottle neck at the drive… if your processors are generating frames fast enough, there is the potential they could exceed the sustained write speed of your drive. seems unlikely if you have a striped raid though…. unless it is severely fragmented (but i think this is a new system, so that’s unlikely)
and, yes you can get a lemon.
i’m kind of curious how it might prform if you take half the ram out…
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
Have you seen this:
https://www.adobe.com/go/kb402403
AE8 has problems with renders etc. when there are more than 6 processors present.
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