General Category > Ongoing Anim8or Development
Multi-Threaded Rendering
AlecJames:
Hi Steve
I have a 200 frame 1920 x 1080 simple animation on a green background rendering using ART, anti aliased, xvid codec.
I'm running on an 8 core i7 4800MQ 2.7GHz.
1329 renders in 31 minutes :( [processor is running at 96% during render]
1321 renders in 15 minutes! [ processor is running at 15% during render]
Both tests are running with the PC using about 5GB of 8GB RAM, anim8or is using about 250MB during both tests. Multithreaded is checked.
Let me know if I've might of set it up incorrectly.
Steve:
AlecJames: I haven't tested on an 8 core CPU yet. It may be using too much cache. Try adding the int attribute ChunkSize with a value of 32 and see if that helps. (Use the menu command Scene->Attributes to add an attribute)
Limiting the number of threads might help, too, but unfortunately the attribute I added to do that is broken.
AlecJames: Oops! I broke it in v1.01.1325. I'll fix it!!!
AlecJames:
I ran some rough tests, ChunkSize vs frames rendered in 1 min:
ChunkSize : Render speed
Not set 5.5 frames per min
16 5 frames per min
32 1.9 frames per min
64 3.5 frames per min
128 7 frames per min
256 12.6 frames per min
384 18.5
448 18
512 21.5 frames per min
640 20
768 19.5
1024 15 frames per min
4096 9.5
Hope it helps :)
Steve:
It looks like the default setting of ChunkSize = 100 is far from optimal for your computer and your scene. This may take a bit of experimenting to figure out how to automatically choose the right parameters.
Raxx:
Gave it a shot. The new build is definitely rendering it slower, but the image seems to come out cleaner in 1329 than in 1321.
1321 apparently has the FastAA setting in it as well, so if it was coded in that version then I'm not sure why it's looking cleaner. Is there a setting you programmed in that's increasing render quality and slowing down render times in 1329? The number of rays seems to double in the new version.
Windows 10 Home
Intel i7-6820HK 2.70 GHz (Quad core, 8 threads)
Below are the results.
Also discovered some clear spots in the shadowing for the 1329 renders.
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