2.83 - Cycles - CUDA error: Out of memory in mem_alloc_result, line 815

Question

When rendering in Cycles at 1080p, everything went fine until it started denoising. I then suddenly got the error: CUDA error: Out of memory in mem_alloc_result, line 815.

My GPU has 6GB VRAM and my computer has 24GB RAM, yet neither showed any signs of approaching the max.

The denoiser uses a lot of memory. Why does denoising take up so much memory? — susu, Jun 23 '20 at 01:03
I had to switch my viewport shading from rendered to solid to fix this. — Joe, Apr 09 '21 at 19:03

score 1 · Accepted Answer · edited Jun 22 '20 at 23:52

1

Denoising the entire 1920x1080 image at once caused the out-of-memory issue. Disabling Progressive Refine and making the tile size reduced the number of pixels denoised at once, eliminating the issue.

edited Jun 22 '20 at 23:52

Duarte Farrajota Ramos

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answered Jun 22 '20 at 23:47

Drakinite

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2.83 - Cycles - CUDA error: Out of memory in mem_alloc_result, line 815

1 Answers1