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Question How to call different shaders on multiple GPUs on the same device?

Discussion in 'Shaders' started by Goof1, Jun 5, 2023.

  1. Goof1

    Goof1

    Joined:
    Jan 22, 2022
    Posts:
    4
    Hello, I have a big load on the server in my project, which has a lot of compute shaders, the question is how to run these compute shaders on multiple GPUs, in my case 2 GPUs 1080ti. Without Nvlink, etc!!!
     
    Goof1, Jun 5, 2023
    #1

  2. burningmime

    burningmime

    Joined:
    Jan 25, 2014
    Posts:
    845
    AFAIK, Unity does not support multiple graphics devices in a single process. You could launch 2 processes, select a graphics devices for each using command line arguments, and use some IPC solution to communicate between them.

    The specific ommand line argument is 
    -force-device-index
    (eg 
    -force-device-index 0
    on one process and 
    -force-device-index 1
    on the other process).
     
    burningmime, Jun 9, 2023
    #2

  3. Goof1

    Goof1

    Joined:
    Jan 22, 2022
    Posts:
    4
    Thank you, I think I know how to solve the problem, i can create several versions of my game and connect them via net code, I need to experiment with this
     
    Goof1, Jun 13, 2023
    #3