Operating system: Windows 10 64bit
Graphics card: NVIDIA GeForce 980 Ti + NVIDIA GeForce RTX 2080 SUPER
Broken: v2.82 Alpha. Previous versions also do not seem to have worked.
Worked: after patching D6126
Short description of error
A very complex scene, which one GPU can render successfully with the help of enough AGP memory, cannot be properly rendered by multiple GPUs. The render may fail from the start or may produce a mosaic result of normal tiles and buggy tiles.
Exact steps for others to reproduce the error
- Open the 'Cosmos Laundromat Demo' ( https://download.blender.org/demo/test/benchmark.zip ) ( I know it is a CPU render demo. We need just a very complex scene draining GPU memory. )
- Select GPU compute device under Render properties.
- Render image.
I submitted the patch for this bug to D6126.