Configure Multiple Video Cards Usage

Should you have several video cards installed on a physical server, you can create additional findface-extraction-api-gpu or findface-video-worker-gpu instances and distribute them across the video cards, one instance per card.

In this section:

Allocate findface-video-worker-gpu to Additional Video Card

To create an additional findface-video-worker-gpu instance and allocate it to a different video card, do the following:

1. Display the findface-video-worker-gpu primary service status by executing:

   sudo systemctl status findface-video-worker-gpu.service
   

2. Find the full path to the service in the line Loaded: loaded (/lib/systemd/system/findface-video-worker-gpu.service; enabled; vendor preset: enabled. It is findface-video-worker-gpu.service in our example (name may vary). Create a copy of the service under a new name.

   sudo cp /lib/systemd/system/findface-video-worker-gpu.service /lib/systemd/system/findface-video-worker-gpu2.service`
   

3. In the same manner, create a copy of the primary service configuration file under a new name.

   sudo cp /etc/findface-video-worker-gpu.ini /etc/findface-video-worker-gpu2.ini
   

4. Open the just created configuration file and actualize the video card number to use.

   sudo vim /etc/findface-video-worker-gpu2.ini
   
   ## cuda device number
   device_number = 1
   

5. Open the new service and actualize the configuration file to use by specifying the just created one.

   sudo vim /lib/systemd/system/findface-video-worker-gpu2.service
   
   ExecStart=/usr/bin/findface-video-worker-gpu --config /etc/findface-video-worker-gpu2.ini
   

6. Reload the systemd daemon to apply the changes.

   sudo systemctl daemon-reload
   

7. Enable the new service autostart.

   sudo systemctl enable findface-video-worker-gpu2.service
   
   Created symlink from /etc/systemd/system/multi-user.target.wants/findface-video-worker-gpu2.service to /lib/systemd/system/findface-video-worker-gpu2.service
   

8. Launch the new service.

   sudo systemctl start findface-video-worker-gpu2.service
   

9. Check the both findface-video-worker-gpu services status.

   sudo systemctl status findface-video-worker-* | grep -i 'Active:' -B 3
   
   ● findface-video-worker-gpu2.service - findface-video-worker-gpu daemon
     Loaded: loaded (/lib/systemd/system/findface-video-worker-gpu2.service; enabled; vendor preset: enabled)
     Active: active (running) since Thu 2019-07-18 10:32:02 MSK; 1min 11s ago
   
   ...
   
   ● findface-video-worker-gpu.service - findface-video-worker-gpu daemon
     Loaded: loaded (/lib/systemd/system/findface-video-worker-gpu.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2019-07-15 15:18:33 MSK; 2 days ago