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    #1

    Running multiple instances of dvdfab- CUDA copies

    I am running multiple instances of Dvdfab
    The first 2 were using CUDA copy they are fine.
    The third FAILED as soon as the CUDA copy started.
    As soon one of the first copy’s is done the third will start up fine.
    I can have many instances or writes going on (tried up to 5) with no fails.
    This 3rd CUDA copy failure occurs every time regardless of the source
    The first video card a 1080 with 2560 CUDA cores has this problem
    Then I installed an additional video card. A 2080 TI card with 4352 CUDA cores
    and the same error occurs.
    I guess it does not matter how many cores there are 2560 or 6912.
    The program limits the concurrent CUDA copy’s to 2.
    How many CUDA cores are used by a single instance of Dvdfab?
    Can this be fixed?
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    #2
    Originally posted by markrames@msn.com View Post
    I am running multiple instances of Dvdfab
    The first 2 were using CUDA copy they are fine.
    The third FAILED as soon as the CUDA copy started.
    As soon one of the first copy’s is done the third will start up fine.
    I can have many instances or writes going on (tried up to 5) with no fails.
    This 3rd CUDA copy failure occurs every time regardless of the source
    The first video card a 1080 with 2560 CUDA cores has this problem
    Then I installed an additional video card. A 2080 TI card with 4352 CUDA cores
    and the same error occurs.
    I guess it does not matter how many cores there are 2560 or 6912.
    The program limits the concurrent CUDA copy’s to 2.
    How many CUDA cores are used by a single instance of Dvdfab?
    Can this be fixed?
    Hi, each Nvidia card only allows two nvenc session running at the same time. It is a limitation of Nvidia. From your log (via email), multiple DVDFabs are using gtx2080 card, the other card is not utilized. We currently do not plan to support multiple cards, thanks.

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      #3
      Thank you for your response! I understand the limitation from Nvidia. I can live with it. I love your software.
      Thanks much.

      Comment

        #4
        Originally posted by markrames@msn.com View Post
        Thank you for your response! I understand the limitation from Nvidia. I can live with it. I love your software.
        Thanks much.
        Thanks for your appreciation about our work in the past. We will keep up the excellent work.

        Comment

          #5
          Upon further research there is a available patch to fix the limitation for the driver.
          Nvidia drivers patch for Windows
          https://github.com/keylase/nvidia-patch/tree/master/win
          This patch removes restriction on maximum number of simultaneous NVENC video encoding sessions imposed by Nvidia to consumer-grade GPUs. - keylase/nvidia-patch

          It works! 2 byte patch.

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