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Why my rtx laptop when iray rendering still horribly slow in 4.12 beta?

joshuajoestarxjoshuajoestarx Posts: 0
in Technical Help (nuts n bolts)
Hi guys, I'm currently using msi GS65 rtx2060 laptop, and have latest 4.12 beta installed, but it's still takes me 10+ hours to properly rendering a scene with iray. Real-time preview with iray in NVIDIA's commercial is literally impossible. And i've been noticing that when it comes to rendering, my cpu is on max load while my rtx gpu was like 0% always. I thought it was because rtx gpu were not supported in previous version, but 4.12 is still the same, please help.

Comments

  • Richard HaseltineRichard Haseltine Posts: 102,699

    It does sound as if the GPU is not being used, but how are you checking? By default Task Manager will not show Iray activity anyway.

    What driver version are you using?

    If you are up-to-date on driver, and if you are using the right settings in Task Manager to see usage (or are using soemthing like GPU-Z) then it may be that memory is running out or it may be that there are a lot of indirectly lit areas or surfaces with complex shaders slowing the process down.

  • nicsttnicstt Posts: 11,715

    Is the laptop for monitor as well?

    If so, then you haven't much RAM for scenes.

  • joshuajoestarxjoshuajoestarx Posts: 0
    Richard Haseltine said:

    It does sound as if the GPU is not being used, but how are you checking? By default Task Manager will not show Iray activity anyway.

    What driver version are you using?

    If you are up-to-date on driver, and if you are using the right settings in Task Manager to see usage (or are using soemthing like GPU-Z) then it may be that memory is running out or it may be that there are a lot of indirectly lit areas or surfaces with complex shaders slowing the process down.

    Thank you, i do have the latest driver installed

  • joshuajoestarxjoshuajoestarx Posts: 0
    nicstt said:

    Is the laptop for monitor as well?

    If so, then you haven't much RAM for scenes.

    Thank you, and how can I fix this RAM issue?

  • JamesJABJamesJAB Posts: 1,760
    joshuajoestarx said:
    nicstt said:

    Is the laptop for monitor as well?

    If so, then you haven't much RAM for scenes.

    Thank you, and how can I fix this RAM issue?

    Because your RTX  2060 is integrated into the mainboard, ther eis no hardware fix or upgrade that you can do.
    You will need to close extra programs that you may have open to reclaim some extra VRAM. Also be aware of how much you are puting into your scene.

    You may want to invest in a scene optimzer.  (this will take steps to reduce the size of the scene with minimal impact on the render image quality.)

  • fastbike1fastbike1 Posts: 4,078

    That doesn't help. People often think they have the latest driver but don't. Are you running windows 10? If so, it is possible that Windows updated the driver to the usual lame Windows driver. Studio 4.12 Beta has a minimum required driver version for Iray / RTX. 

    joshuajoestarx said:
    Richard Haseltine said:

    It does sound as if the GPU is not being used, but how are you checking? By default Task Manager will not show Iray activity anyway.

    What driver version are you using?

    If you are up-to-date on driver, and if you are using the right settings in Task Manager to see usage (or are using soemthing like GPU-Z) then it may be that memory is running out or it may be that there are a lot of indirectly lit areas or surfaces with complex shaders slowing the process down.

    Thank you, i do have the latest driver installed

     

  • joshuajoestarxjoshuajoestarx Posts: 0
    JamesJAB said:
    joshuajoestarx said:
    nicstt said:

    Is the laptop for monitor as well?

    If so, then you haven't much RAM for scenes.

    Thank you, and how can I fix this RAM issue?

    Because your RTX  2060 is integrated into the mainboard, ther eis no hardware fix or upgrade that you can do.
    You will need to close extra programs that you may have open to reclaim some extra VRAM. Also be aware of how much you are puting into your scene.

    You may want to invest in a scene optimzer.  (this will take steps to reduce the size of the scene with minimal impact on the render image quality.)

    Thank you

  • mumia76mumia76 Posts: 146
    Richard Haseltine said:

    It does sound as if the GPU is not being used, but how are you checking? By default Task Manager will not show Iray activity anyway.

    Yes, it will, just have to go to GPU and select Cuda in one of the graphs, then it shows iray activity.

  • Richard HaseltineRichard Haseltine Posts: 102,699
    mumia76 said:
    Richard Haseltine said:

    It does sound as if the GPU is not being used, but how are you checking? By default Task Manager will not show Iray activity anyway.

    Yes, it will, just have to go to GPU and select Cuda in one of the graphs, then it shows iray activity.

    Which is what I meant by saying it would not do it be default - without changing a setting (in each session). Note that, depending on your driver/Windows version, you may not have CUDA as an option and will need to use Compute_0 instead.

  • joshuajoestarxjoshuajoestarx Posts: 0
    Richard Haseltine said:
    mumia76 said:
    Richard Haseltine said:

    It does sound as if the GPU is not being used, but how are you checking? By default Task Manager will not show Iray activity anyway.

    Yes, it will, just have to go to GPU and select Cuda in one of the graphs, then it shows iray activity.

    Which is what I meant by saying it would not do it be default - without changing a setting (in each session). Note that, depending on your driver/Windows version, you may not have CUDA as an option and will need to use Compute_0 instead.

    Thank you guys, so it's not about driver or settings, it's just my system not powerful enough, thats kinda sad

  • ParadigmParadigm Posts: 421

    GPU-Z makes it really easy to see if your GPU is being used because the sensor tab will have little graphs that are solidly filled when it's being used to render.

    Also, if you go to help --> troublshooting --> view log you can scroll to the bottomish and look at when the render starts and if your GPU is trying to be used but doesnt have enough RAM there will be a message along the lines of it erroring out due to insufficient available RAM. When I'm checking I open the log file right before I render, delete everything inside of it then save it and render. Reopen it and you'll have a shorter log of everything that happened since you started the render. Cuts out a lot of noise.

  • fastbike1fastbike1 Posts: 4,078

    @joshuajoestarx 

    You may be trying to render scenes that require more VRAM than your system has. As you have seen, your laptop will still render but it will be much longer. Laptops are inherently less capable, due to the form factor, than desktop computers. 

  • joshuajoestarxjoshuajoestarx Posts: 0
    fastbike1 said:

     

    You may be trying to render scenes that require more VRAM than your system has. As you have seen, your laptop will still render but it will be much longer. Laptops are inherently less capable, due to the form factor, than desktop computers. 

    Paradigm said:


    Also, if you go to help --> troublshooting --> view log you can scroll to the bottomish and look at when the render starts and if your GPU is trying to be used but doesnt have enough RAM there will be a message along the lines of it erroring out due to insufficient available RAM. When I'm checking I open the log file right before I render, delete everything inside of it then save it and render. Reopen it and you'll have a shorter log of everything that happened since you started the render. Cuts out a lot of noise.

    You're right, I tryed to rendering a less complicated scene while monitoring GPU-Z, my GPU did being used and reasonably fast, maybe it's because those transparent objects were killing my VRAM in my last scene. But this leads to my another question, why is GPU stop working when a scene is too complicated? this mechanism doesn't seems to make any sense for me.

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