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Q100040: How to assign your Nvidia GPU to Mari on a Windows system

SUMMARY

This article explains how to assign your dedicated Nvidia GPU to Mari. This has to be done on systems with separated display and dedicated graphics cards, where most commonly this is a combination of Intel HD graphics and an Nvidia GPU.
If your PC is using the Intel graphics, Mari will fail to start as Intel GPUs are unsupported. The workaround is to manually assign your Nvidia card to Mari.
 
If your setup does not have Intel Graphics and you are experiencing crashes during startup, please review our Mari-Startup-problems article for further troubleshooting.

MORE INFORMATION

Mari only supports AMD or Nvidia GPUs with certain minimum requirements (shown on our system requirements page).

Laptops which come with 2 GPUs will try to automatically assign the best GPU for the job when running a program, in this case, the wrong GPU was assigned (Intel). This can be fixed by modifying the Nvidia Control Panel for accessing the correct GPU in Mari, as follows:
  1. Open Control Panel > Nvidia Control Panel.
  2. Navigate to Manage 3D settings.
  3. You will see two tabs: Global Settings and Program Settings, switch to Program Settings.
  4. Under 'Select a program to customize' select Mari 4.6v4, if Mari is not in the dropdown list, click Add to the right of the dropdown list.
    1. Add should display an extensive list of programs. If Mari 4.6v4 is in that list, click Add selected program and continue with step 5), if it's not, then click Browse on the bottom right.
    2. You will have to add Mari4.6v4.exe manually. (default location: C:\Program Files\Mari4.6v4\Bundle\bin\Mari4.6v4.exe)
  5. Under Option 2, select High-Performance NVIDIA processor, as shown below:
  6. Click Apply and launch Mari.

After applying the above settings Mari should now work as expected.

FURTHER HELP
If you have tried all of the steps detailed in the above but still have issues setting the Nvidia GPU, please open a Support ticket per the guidance here:  Q100090: Reporting a Mari issue

For more information on how to open a Support ticket, please refer to the Q100064: Using the Support Portal article.



Keywords: startup, crash, Mari, nvidia, Laptop, Intel HD
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