tiled rendering for 8k,4k image

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PetrT
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tiled rendering for 8k,4k image

Post by PetrT » Mon Mar 23, 2020 8:30 am

Hi
Can be tiled rendering be more effective?
Some times using tiled render render stops with not enouph memory error (GTX1070 8gb)

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Dade
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Re: tiled rendering for 8k,4k image

Post by Dade » Mon Mar 23, 2020 10:14 am

PetrT wrote:
Mon Mar 23, 2020 8:30 am
Can be tiled rendering be more effective?
Some times using tiled render render stops with not enouph memory error (GTX1070 8gb)
Do you have a scene that render fine at low resolution but goes out of memory at 4/8K with tile rendering ?
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PetrT
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Joined: Sun Dec 02, 2018 6:13 pm

Re: tiled rendering for 8k,4k image

Post by PetrT » Mon Mar 23, 2020 4:16 pm

this one does not rendered in 1080 with 256 px and 16.shows black screen.It is not too complex
Can not find exact example maybe later
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B.Y.O.B.
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Re: tiled rendering for 8k,4k image

Post by B.Y.O.B. » Mon Mar 23, 2020 4:23 pm

16 AA samples with such a big tile size is a lot. Using more AA samples requires more memory, if I remember correctly.

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Dade
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Re: tiled rendering for 8k,4k image

Post by Dade » Mon Mar 23, 2020 4:24 pm

PetrT wrote:
Mon Mar 23, 2020 4:16 pm
this one does not rendered in 1080 with 256 px and 16.shows black screen.It is not too complex
Can not find exact example maybe later
In LuxCore, rendering a tile at 256x256x16 AA is like rendering an image with 256x256x16 pixels so it is like rendering an image at 1K resolution. Plus Lux is also rendering multiple tiles at the same time so you are probably using a LOT of ram for the image.

Just use the default tile size, something like 64x64x16 or even smaller. It should solve your problem.
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PetrT
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Re: tiled rendering for 8k,4k image

Post by PetrT » Mon Mar 30, 2020 7:47 pm

Thanks
Some test examples
Tile_32px_AA_25_625sample_2min45sek.png
32 px AA 25
625 samples time=2 min 45sek
No_Tiles_625sample_2min30sek.png
No tiles
625 samples time=2 min 30sek
Tile_256px_AA_2_625sample_2min56sek.png
256 px AA 2
625 samples time=2 min 56sek

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