When you configure detectors, select Nvidia GPUs one by one.

  • If only one Nvidia GPU is installed, select Nvidia GPU 0.
  • If several Nvidia GPUs are installed, select the graphics card on which you want to perform the detection process.
  • If you select an uninstalled Nvidia GPU, detection isn't performed.

The table lists the parameter names and detectors, configuring which you can select the required Nvidia GPU:

ParameterDetector
Mode

Neural network mode

Neural filter mode

Neural tracker mode

Detection mode
Moving object filter mode
Abandoned object filter mode
Processing unit

You can change the order of the Nvidia GPU display using the CUDA_DEVICE_ORDER system variable (see Appendix 9. Creating system variable) by specifying the required value:

  1. The FASTEST_FIRST value numbers the GPUs from the most powerful card to the less powerful ones, that is, Nvidia GPU 0 is the most powerful card.
  2. The PCI_BUS_ID value numbers the GPUs according to the physical location of the cards in the PCI-E slots on the motherboard, that is, Nvidia GPU 0 is the card in the highest slot.

To find out information about the availability, quantity and numbering of Nvidia GPUs, do the following: 

  1. Run the command prompt as administrator.
  2. In the command prompt, enter the Nvidia-smi query.
  3. Press Enter.

The command prompt window displays the information about the installed Nvidia GPUs.