Is this Engine runtime data usage normal?

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Chitterdsb
Posts: 3
Joined: Mon Aug 09, 2021 8:39 am

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
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bepeg4d
Octane Guru
Posts: 10326
Joined: Wed Jun 02, 2010 6:02 am
Location: Italy
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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:
Parallel Samples = 16 = 990MB
Parallel Samples = 16 = 990MB
Parallel Samples = 8 = 495MB
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
coilbook
Licensed Customer
Posts: 3032
Joined: Mon Mar 24, 2014 2:27 pm

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
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