How can I reduce memory usage with Jetson?

Rekor will run on both Jetson TX-2 and Jetson TX-1 with default parameters

Rekor will run on both Jetson TX-2 and Jetson TX-1 with default parameters. However, on the TX-1 and Nano especially, memory usage will be very tight. If you're running additional software besides Rekor, you may want to reduce the system memory usage. Here are a few tips that will help:

Disable the GUI
Memory usage: ~600MB
The Jetson comes with a desktop version of Ubuntu installed. If the GUI is not required for operation, you can disable it with the following commands:

sudo systemctl set-default
sudo reboot

To enable GUI again issue the command:
sudo systemctl set-default

to start a GUI session on a system without a current GUI execute:
sudo systemctl start gdm3.service

Disable Vehicle Make/Model Detection
Memory Usage: ~800MB
Edit the /etc/openalpr/alprd.conf file and set the following parameter:
classify_vehicles = 0

Reduce the batch size:
Memory Usage: ~200MB
Edit /etc/openalpr/alprd.conf and set the following parameter:
gpu_batch_size = 3

Reduce the input resolution:
Dropping your input video resolution from 1080p to 720p for example will reduce memory usage by 100MB or so.