Mailing List AE-List@media-motion.tv ? Message #51335
From: Teddy Gage <teddygage@gmail.com>
Subject: Re: [AE] Quick AE Render question - Hyperthreading reduces performance?
Date: Mon, 28 Oct 2013 13:33:08 -0400
To: After Effects Mail List <AE-List@media-motion.tv>
I usually turn the "available processors" setting in the MT prefs to the amount of physical CPUs in the system. Does the same thing. That way I don't have to turn it off system-wide, which can be a pain as it is done in BIOS with a reboot. C4D and some scenes in AE do actually render faster with MT on. Depends on your system and RAM usage.


On Mon, Oct 28, 2013 at 10:51 AM, Robert Houghton <gfxguy74@gmail.com> wrote:
Robert I think you are onto something there, I did some cleaning up last night and it's rendering faster.

On another note,  AE actually rendered faster with Hyperthreading turned off (no multiprocessing).  The project I was rendering was a good blend of using still, video and Element 3D elements, the total time savings amounted to about 5%. I thought AE was past that turning hyperthreading off phase.

    -Rob

On 10/28/2013 5:29 AM, Robert Kjettrup wrote:
Are you doing this with 3d layers? i guess so since you talk about using a camera.

AE is actually very good at dont rendering layers out of view or fully covered by layers when using 2d layers, but when you use 3d layers this intelligence goes away and it seems like every layer is rendered even if outside of the cameraview. When i encounter AE projects that are very slow to render when using lots and lots of 3d layers i make sure to cut the layers in and out points when they are not needed anymore.

I had once a 350+ 3d layer comp where i had all of the layers the full length of the timeline even if only about 10 was in the view at one time. This became sooo slow to render, especially with motion blur, that i had to go through the whole timeline setting in and out points on the layers when they went in and out of view.  Even an expression i did to set the opacity to 0 when they where outside didn't help, only when the layers was cut the rendertime went down so i could deliver on time.

Maybe you should try that too.

Robert




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