xaviernx-install

nvidia jetson xavier nx install tips

How to set clock config to CPU centric(=max) mode

See manual at

• https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/clocks.html#wwpID0E05F0HA

Set GPU clock to the lowest to reserve power to CPU.

sudo /usr/bin/jetson_clocks --show
sudo /usr/bin/jetson_clocks --store 
cd /sys/devices/gpu.0/devfreq/17000000.gv11b
cat available_frequencies
sudo sh -c "echo 114750000 > max_freq"
cd /sys/devices/17000000.gv11b/devfreq/17000000.gv11b
cat available_frequencies
sudo sh -c "echo 114750000 > max_freq"

Then set max mode in CPU,

sudo /usr/bin/jetson_clocks
sudo /usr/sbin/nvpmodel -d cool
sudo /usr/sbin/nvpmodel -q

To restore previous setting,

sudo /usr/bin/jetson_clocks --restore
cd /sys/devices/gpu.0/devfreq/17000000.gv11b
sudo sh -c "echo 1109250000 > max_freq"
cd /sys/devices/17000000.gv11b/devfreq/17000000.gv11b
sudo sh -c "echo 1109250000 > max_freq"
sudo /usr/bin/jetson_clocks.sh --show

Install Arm Compute Library(v20.11) on aarch64 linux

env	tool chain	user time(min)	ratio
native-odroidhc4 Ubuntu20.04	gcc-8 + ld	288	1.00
native-RPi4-4G Ubuntu20.04	gcc-8 + ld	237	0.82
native-KhadasVIM3-Pro Ubuntu20.04	gcc-8 + lld-11	198	0.68
native-Xavier-NX-max Ubuntu18.04	gcc-8 + lld-12

Install LLVM-1200 on aarch64 linux

mode	tool chain	user time(min)	ratio
max	gcc-7 + ld		1.00