Why is my CPU processing scene?

AnonTurtle

I am trying to render a model using frame by frame. Frame 0 rendered with GPU then when it hit frame 1 it started rendering with CPU. This is a result I captured from the output.

Settings: Engine = Iray; Photoreal and Interactive Devices = CPU off, GPUs on; OptiX = On

 

Rendering frame 2

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.16 IRAY rend progr: CUDA device 0 (GeForce GTX 1080 Ti): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.6 IRAY rend progr: CUDA device 1 (GeForce GTX 1080 Ti): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.17 IRAY rend stat : Geometry memory consumption: 490.901 MiB (device 1), 0 B (host)

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend stat : Geometry memory consumption: 490.901 MiB (device 0), 0 B (host)

Iray VERBOSE - module:category(IRAY:RENDER): 1.16 IRAY rend progr: CPU: Processing scene...

 

-------------------------------2nd example----------------------------

 

Rendering frame 1

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080 Ti): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.2 IRAY rend progr: CUDA device 1 (GeForce GTX 1080 Ti): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.5 IRAY rend stat : Geometry memory consumption: 490.901 MiB (device 0), 0 B (host)

Iray VERBOSE - module:category(IRAY:RENDER): 1.9 IRAY rend stat : Geometry memory consumption: 490.901 MiB (device 1), 0 B (host)

Iray VERBOSE - module:category(IRAY:RENDER): 1.2 IRAY rend progr: CPU: Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend stat : Native CPU code generated in 0.0388s

nicstt

Not enough RAM on the GPU for the scene you have. Either the scene is too large, or something else is taking up RAM too (in-affect still making the scene too large).

(An obvious culprit is leaving open renders from previously. You''re doing a sequence or animation?)