When I ran UE5.3 on Ubuntu20.04LTS with multigpu and specified it to run on the second gpu by adding the command “-r.GraphicsAdapter=1” in the terminal, the following error occurred:
Addition remarks:
And my work environment is : ubuntu20.04LTS、gcc13.3、NVIDIA-SMI 535.183.01、VULKAN 1.2.131,Dual GPU: NVIDIA GeForce RTX3090(GPU0)、 NVIDIA GeForce RTX3090(GPU1)
I can ran UE5.3 normally on the first gpu.
I learned github that VulkanSceneGraph also uses the Vulkan API and supports running on multigpu with specified gpu. I have tried its example ‘vsgmultigpu’ on my computer, and it can ran normally on the second gpu. Here is his GitHub URL: GitHub - vsg-dev/vsgExamples: Example programs that test and illustrate how to use the VSG and optional add-on libraries. I want to know how I can achieve this function on UE? I have been troubled by this problem for a long time. and I will be appereciated if anyone can help me with it! I also hope that the official engineers of Unrel Engine can pay attention to this issus. If a paid solution can be provided, I would be very willing to accept it!