GPUs Not Being Used :/

jcalebdesign

I have two 3080 RTX with 10gb. 

I've used scene optimizer and I get this error in my log file:
 

"2024-11-21 18:07:41.043 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.10  IRAY   rend error: Unable to allocate 5.937 GiB from 1.265 GiB of available device memory
2024-11-21 18:07:41.043 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.6   IRAY   rend error: CUDA device 0 (NVIDIA GeForce RTX 3080): Scene setup failed
2024-11-21 18:07:41.043 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.6   IRAY   rend error: CUDA device 0 (NVIDIA GeForce RTX 3080): Device failed while rendering
2024-11-21 18:07:41.043 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [WARNING] - IRAY:RENDER ::   1.6   IRAY   rend warn : CUDA device 0 (NVIDIA GeForce RTX 3080) ran out of memory and is temporarily unavailable for rendering.
2024-11-21 18:07:41.505 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.9   IRAY   rend error: Unable to allocate 5.937 GiB from 1.464 GiB of available device memory
2024-11-21 18:07:41.505 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.8   IRAY   rend error: CUDA device 1 (NVIDIA GeForce RTX 3080): Scene setup failed
2024-11-21 18:07:41.505 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.8   IRAY   rend error: CUDA device 1 (NVIDIA GeForce RTX 3080): Device failed while rendering
2024-11-21 18:07:41.505 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [WARNING] - IRAY:RENDER ::   1.8   IRAY   rend warn : CUDA device 1 (NVIDIA GeForce RTX 3080) ran out of memory and is temporarily unavailable for rendering.
2024-11-21 18:07:41.557 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [WARNING] - IRAY:RENDER ::   1.8   IRAY   rend warn : All available GPUs failed.
2024-11-21 18:07:41.557 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.8   IRAY   rend error: Fallback to CPU not allowed.
2024-11-21 18:07:41.557 [WARNING] :: \src\pluginsource\DzIrayRender\dzneuraymgr.cpp(373): Iray [ERROR] - IRAY:RENDER ::   1.8   IRAY   rend error: All workers failed: aborting render
2024-11-21 18:07:41.557 [ERROR] Iray :: Internal rendering error."

 

I've chased the normal things around. No clue what it could be. Its saying I only have "1.265 GB" available but GPUZ says there is no load at all on my GPUs.

I know this is a common problem but any help would be appreciated. 

crosswind

You should've checked Memory Used in GPU-Z rather than GPU Load...

DS, your Scene per se as well as Iray Engine (appr. 2.2G+ VRAM...stably before DS is fully closed) consume VRAM before rendering.

If the calculation from GPU-Z proves DS log is correct, I'm afraid you have to further optimize your Scene ~~