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Blender Discussions

mirkosantangelo
Journeyman III

[Mac/eGPU] ProRender Crash Blender and Render Issue with multiple GPUs

Hi all! I'm using ProRender 2.3.4 on Blender 2.82.
My setup is a Macbook Pro with AMD Radeon Pro 560X and AMD Radeon RX Vega 64 (connected via a Razer eGPU enclosing box).

When these two GPUs are enabled via the Render Settings at the same time (See following configuration) Blender crashes almost on every operation (Moving a light, opening a new panel, etc). The crash happens on both following configurations.

See attached video (prorender-bug) on this message for a sample.

Screen Shot 2020-02-23 at 1.14.44 PM.png

Screen Shot 2020-02-23 at 1.16.34 PM.png


The only workaround to prevent this crash on Mac OS is to disable the eGPU on the viewport (which is counter-productive).

Screen Shot 2020-02-23 at 1.28.44 PM.png

This is of course not the ideal solution. Plus, looks like that if I enable the eGPU only, the rendering on the viewport stop working. See attached video below (viewport-render-bug-egpu). (As a side note, on Cinema4D R21 I'm able to enable the eGPU-only in ProRender with no problems, both in render and viewport).

Any help will be very appreciated. 

Many thanks in advance!

M.

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