I recently got a new GPU and I was experimenting with various render settings in Blender.
When I tried to set both active GPU and CPU in system settings, whenever I try to render, it says “Out of memory” (HIP-RT)
Which seems rather strange to me as before the upgrade, CPU was handling everything fine (although very slow). And new GPU handles everything well on it’s own. But I’m unable to try to combine them for theoretical benefit of using both.
When HIP-RT is switched back to only HIP, it is rendering, but only with CPU (when both are still active).
So, if it’s some quirk, then there’s probably nothing I can do about it. But just in case I overlooked something, if anyone feels like telling me why is that, I’ll appreciate it!
Just use the GPU
Using CPU+GPU together after Cycle X results in poor performance.
Before Cycle X, the CPU and GPU handled different areas, but since they worked together from Cycle X, they followed the performance of the slow CPU.
Check out the monitor program for problems with memory. If you get a message that you have enough memory but not enough, it could be a blender setup or a drive problem (AMD’s drive support is not very good)