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TDA4VEN-Q1: GPU rendering blocking issue

xie jc
Expert 2180 points
Part Number: TDA4VEN-Q1

Tool/software:

Hi TI;

On the TDA4VEN sdk10.0 platform, we encountered a GPU rendering blocking issue. When the problem occurred, we captured a PVR Log. Could you please help analyze the cause?

Regards,

JC

pvrlogdump_j722s-evm_2508260937.txt.gz

  • 0
    TI__Genius 16720 points

    Hello, 

    What is use-case that you are using the GPU for? Is this easily reproducible on the EVM or is this occurring on a custom board?

    Thanks,
    Sarabesh S.

  • 0 in reply to Sarabesh Srinivasan
    Expert 2180 points

    Hi Sarabesh S,

    Sarabesh Srinivasan said:

    What is use-case that you are using the GPU for? Is this easily reproducible on the EVM or is this occurring on a custom board?

    This issue occurred on our custom board,this issue has a very low probability and only occurred once. By reviewing the logs we provided, can we determine what exactly caused this problem?

    Regards,

    JC

    ...

  • 0 in reply to xie jc
    TI__Genius 16720 points

    Hi JC, 

    The PVR dump generically tells us what went wrong with the GPU (i.e. page faults, gpu HWR, invalid addresses, etc.). If you let us know the use-case and are able to reproduce more consistently this will help us isolate what the possible problems could be. Are you able to reproduce this on the EVM?

    Thanks,
    Sarabesh S.

  • 0 in reply to Sarabesh Srinivasan
    Expert 2180 points

    Hi Sarabesh S,

    Sarabesh Srinivasan said:

    The PVR dump generically tells us what went wrong with the GPU (i.e. page faults, gpu HWR, invalid addresses, etc.). If you let us know the use-case and are able to reproduce more consistently this will help us isolate what the possible problems could be. Are you able to reproduce this on the EVM?

    The probability of this issue is extremely low. At present, there is no way to reproduce it. Currently, only this log file can be analyzed. There is a very crucial piece of information: when the problem occurred, the GPU load exceeded 145%. Please help analyze the cause.

    Regards,

    JC

  • 0 in reply to Sarabesh Srinivasan
    Expert 2180 points

    Hi Sarabesh S,

    Help answer the following questions.

    1、Will there be any issues if multiple processes use the GPU simultaneously?

    2、Under what circumstances will the GPU load exceed 100%?
    3、What additional log information is needed to analyze this issue?

    Regards,

    JC

  • 0 in reply to xie jc
    TI__Genius 16720 points

    Hi JC, 

    I'll look into this and get back to you tomorrow.

    Thanks,
    Sarabesh S.

  • 0 in reply to Sarabesh Srinivasan
    TI__Genius 16720 points

    Hi JC, 

    xie jc said:
    1、Will there be any issues if multiple processes use the GPU simultaneously?

    Sorry for the delay here, there is not an issue to run multiple processes on the GPU. However, if your GPU utilization is too high then you will have some performance reduction seen in your applications. 

    xie jc said:
    2、Under what circumstances will the GPU load exceed 100%?

    This just depends on the use-cases that are being run. There is not a list of circumstances where the GPU load will exceed 100% since there are plenty of ways you can use the GPU. You can measure GPU utilization either by using Imagination's tool PVR Tune (here).

    xie jc said:
    3、What additional log information is needed to analyze this issue?

    Please follow the steps in this FAQ to gather more debug information:  [FAQ] How can I analyze a GPU (Graphics Process Unit) driver or hardware issue? 

    Thank you,
    Sarabesh S.