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Is this Engine runtime data usage normal?

PostPosted: Tue Aug 10, 2021 5:29 am
by Chitterdsb
So first off, I am using the blender plugin on the latest stable build at the moment.
This is less of a confirmed issue and more of just me asking for clarification.
No matter the scene complexity when rendering 1.9gb of my vram will be allocated to "engine runtime data"
Is this standard behaviour? Plus, is there a way to reduce it without having a second gpu or would I be out of luck?
Specs:
rtx 2060 6gb
i7 7700
32gb ram

Ill attach an image below of the octane render devices preferences if that could possibly help:
https://prnt.sc/1m3ax2h

Re: Is this Engine runtime data usage normal?

PostPosted: Wed Aug 11, 2021 6:57 am
by bepeg4d
Hi,
sorry, not a Blender user, but you can reduce the amount of VRAM used for the Engine runtime data, by reducing the Parallel Samples value in the Kernel settings:
6454EDC0-50DA-412C-B4FC-0028642772FB.jpeg
Parallel Samples = 16 = 990MB

2A9EADE5-968F-4A6C-BCC5-97E273F01DF5.jpeg
Parallel Samples = 8 = 495MB


But please note that reducing the Parallel Samples has an impact in speed, ~25% less from 16 to 8.

ciao Beppe

Re: Is this Engine runtime data usage normal?

PostPosted: Mon Jan 23, 2023 5:01 am
by coilbook
bepeg4d wrote:Hi,
sorry, not a Blender user, but you can reduce the amount of VRAM used for the Engine runtime data, by reducing the Parallel Samples value in the Kernel settings:
6454EDC0-50DA-412C-B4FC-0028642772FB.jpeg

2A9EADE5-968F-4A6C-BCC5-97E273F01DF5.jpeg


But please note that reducing the Parallel Samples has an impact in speed, ~25% less from 16 to 8.

ciao Beppe

Hi
I just did the test 8 and 32 parallel samples and no speed difference