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Excellent use of memory

2019/04/18 03:59

I have noticed that if I render an image with Cycles at 500 x 500 and compare the GPU memory used to render at 5000 x 5000, there is no increase. This is quite surprising and impressive considering other GPU renderers I know always increase memory usage depending on image size.

2019/04/19 00:42

Credit for this goes to the Cycles developers as this is the way it is built for Blender.

As long as you are doing a non-progressive-refine render, the GPU only cares about one tile at a time. This means that you can set the full render resolution to any size at all and it will not increase GPU memory usage.